TLT-12 - Tru-line Wheel Alignment
Contents
1. Operation and Service Manual Laser Wheel Alignment System TLT 12 Truck Trailer and RV Alignment System gt lt 8231 Blaine Rd Blaine WA 98230 360 371 0552 Phone 360 371 0553 Facsimile 800 496 3777 Toll Free www Tru Line net Table of Contents INTO U CHO Ms v5 dctteast ods pea eetioan tun avid ahein a us La aidan loan a 3 Howat Worksiennnenipternnn el Jes phe a ean Are dads bad ae aere Re 4 Reading th Targetsiinrus nonesa o e E EEES T EEN E O aE 4 Unpacking and Assembling the Systems risciciiscccesstieenvett sinncssidstncadanspenveVecvogn deviance side coined 5 Calibration PEOCEUUECS ochsxssantsexsannsgnzdscchanaddwbe ETa rao TESTEDE Ea uieasendiamssanetukoreierneeticenties 7 Calibrating the camber of the VET lt 30 a siccisa ectscrcesameraieetets wdsncra i ccateteedeeaailatuceness 7 Calibrating the TLT 56 Digital eevels cegevssass ceceesttnyb ane vedteccp ese ddusteesbasetles cee 8 Calibrating the toe settings for TLT 36 right Laser Gun and TLT 37 left Laser Gun 9 Calibration OF the TE TAA neiise isinen esa a vhaneisonectaten snes tan tease ashanel nghnesnannelcaes 10 General Alignment Procedure oictc 3ueetanauscesiswice ed miabenidute np aubimueseoudnea eta decesutee banbvesedeus 13 Mounting the TLT 28 Wheel Clamps icici nccunscarite eas cinta cia aia 15 UPON POC COUES wot ig naire tee ga sn asi tian coe a a aa a Aa aA 16 R n Out Procedure cca ccsyscvsvesivcnsvsnsydaviees acca tavionesixeaesdara swy AEEA EE EEE a 162. Accommodating Oversize Trick Tires 120s oisecetec tess alee ciate elas acllal sscreit cies ah Coe Si 19 INAS ASME LIS CoAT caso icy deen densisahea a E E ee aotea ieee 20 Mastin Casters odaie Toena aa r AER e ANE teas bunetheuptaanbel heats 20 Measuring Caster with the TLT 56 Digital Level eee eeceeessecseeteeeeeeeeeeeeseeaeeees 22 INAS ASUS SAUTER CP deaten r cid ae r tba cena ve dale pein Sav Saaetnap teat aa 21 Measuring Caster Camber and SAI KPI on a Non Level Surface eceeeeeeeeseeeeeeeees 23 To Measure Camber on a Non Level Surface ccccecccesccessceseeeeeeeseeeeneceeeeseeenseenes 23 To Measure the Side to Side Titt forS AiR Ph encosc c uscsdpa iets dacieas Reais alpine 23 To Measure Front to Rear Tilt for Caster x s c ccccetnutecis eelaveavtde ad svecauns conceraniatoeiden cess 24 Liv Caster AC Uste ntsc ics tee cess e n Utada ere ota oes EE T tunes tte heady st eon ee ara 25 Ewo W heel Centerline Ali Ominent iosessccissecatessdbevesteadlearsesds cavanedanteshseniessins Coodtmeasconseveanwaes 26 Reading Toe Procedure aninion EEE EEE T ate Mise a a 26 Two Wheel Centerline Alignment Procedure s ssssesessesersssesseserssessresressrssresressessees 26 Tracking Offset a an a eaa A E e tee 29 Trackimig Proc d rS riesene ir e e a a E E R O E a E h 29 Offset Procedure lt 5 25a anid te hi eye a a e a a ea ek Re 30 MAINTENANCE WARRANTY amp SERVICE ccccccccssscccessseceesssseeeeesseneeeeesssseeeesees 32 Mainten
3. Center Slide Assembly Locking Screws 2 s yf ClampingKnob ping pes Mounting Fet TLT 28 Wheel Clamp Figure 12 15 Run Out Procedure Once the wheel clamps have been mounted a simple run out procedure should be performed The following should be completed before run out adjustments are made e Front wheel clamps must be installed e The vehicle must be raised so the wheels can rotate freely Run Out Procedure 1 Place the TLT 30 on the disk extending from the wheel clamp 2 Level the TLT 30 using the SAI scale on the top of the post Make sure the TLT 30 can move easily so that it stays relatively level when the wheel clamp is rotated 3 Rotate the wheel clamp until the clamping knob is at a 12 00 o clock position Fig 13 Set the caster bubble to zero on the caster scale this is done with the caster adjustment knob which is located on body of the TLT 30 la Figure 13 4 Rotate the wheel clamp turn the clamping knob should be at a 6 00 o clock position Fir 14 16 Caster Zero Adjustment Figure 14 5 Level the TLT 30 and read the number on the caster scale 6 Adjust the bubble to the point halfway between zero and the current reading using the RED k
4. This will void the warranty The system will operate at temperatures up to 50 degrees C 123 degrees F without problems It is possible to exceed that temperature by leaving the unit in direct sunlight on a very hot day If the unit is hot to touch do not operate place the unit in the shade until it cools Operating above 50 degrees C will void warranty 32 SERVICE INSTRUCTIONS The user should be aware that this is a precision instrument and excessive abuse or rough handling may result in damage and or loss in calibration Routine desired maintenance and service is not necessary However if the system is not functioning properly the user should not attempt to repair any equipment A Tru Line service representative should perform all servicing and repairs at the desired Send all repairs to with a pre approved RMA Return Merchandise Authorization to Tru Line 8231 Blaine Rd Blaine WA 98230 360 371 0552 phone 360 371 0553 fax 800 496 3777 toll free www tru line net 33
5. flat not level so the bar is tilting about the same as the vehicle Place the bar on the driver side of the vehicle with the red side toward the front 2 Hang the gauge on the red side and zero the camber bubble using the camber zero adjust knob refer to Figure 6 3 Hang the gauge on the black side and read the camber 4 Adjust the bubble half way back using the camber zero adjust knob The camber gauge now reads the tilt on the ground Place the gauge on the red side and read the tilt of the ground Whatever the caster readings are add or subtract the ground tilt reading to the caster reading READ i CORRECTED CAMBER L ZERO HERE FIRST Fie Es LE PREE EOD POLE EOE LOI 4 PLACE IN FRONT OF WHEELS Figure 20 24 Live Caster Adjustment Caster readings are taken on the front wheels using the TLT 30 1 Hang the TLT 30 on the left front wheel clamp to measure caster 2 Install brake pedal depressor and lock brakes so they do not rotate With power brakes start the engine to install brake pedal depressor 3 Release the pin on the turntable This allows the wheel to pivot or turn freely 4 From a straight ahead position turn the wheel out 20 degrees Use the scale on the turntable to confirm swing 5 Level the TLT 30 using the SAI scale on the top of the TLT 30 adjust th
6. scale Rotate the TLT 28 to a 3 o clock position and adjust caster bubble to zero again Rotate the wheel to the 9 o clock position and adjust the bubble to halfway between zero and the reading using the two knobs not yet adjusted on the TLT 28 clamp With the TLT 30 held in a level position with one hand do not grasp or hold tightly rotate the wheel one full turn while watching the caster bubble Here the bubble should not move more than 1 8 of a bubble If the bubble moves more than 1 8 of a bubble repeat the procedure Note For a Two wheel Centerline toe run out should be done on the front wheels When checking tracking tandem and offset run out is not required but is recommended 13 5 Lower the vehicle to settle the suspension Be sure that the front turning plates are released and move freely 6 Hang the TLT 30 on the left front wheel clamp to measure camber caster and SAI KPI a d e For camber readings with the tire in a straight ahead position take the reading of the camber bubble on the TLT 30 For caster readings swing the tire out 20 degrees and adjust the caster bubble to zero Then swing the tire in 20 degrees and note the reading of the caster bubble SAIJ KPI lock the brakes with the brake pedal depressor then swing the tire out 20 degrees zero the SAI KPI scale on the top of the TLT 30 and lock the gauge in place swing in 20 degrees and note the reading Record each reading for c
7. Guns on the front of the vehicle Level and lock the guns so they are pointed at the Centering Targets Zero the toe dials and turn them on Adjust the cross toe laser beam on the TLT 37 until it hits the mirror of the TLT 36 Adjust the toe dial of the TLT 36 until the Laser Beam drops back in the hole of the TLT 37 Read the toe dial of the TLT 36 this is twice what the total front toe of the vehicle is I E if the toe dial reads 1 8 in the actual total front toe is 1 16 in Two Wheel Centerline Alignment Procedure Lock steering wheel in the center position Place the TLT 52 Centering Targets at the rear drive wheels Hang the TLT 36 and TLT 37 Laser Guns on the front of the vehicle Level and lock the guns so they are pointed at the Centering Targets a Turn the Laser Guns on and point them at the Centering Targets at which time the laser will be seen on the Centering Target 26 b Check to make sure that the cross toe laser from the left laser box is hitting the cross toe mirror in the laser box If not adjust the cross toe vertical pivot knob which is on the left laser box until the laser reaches the mirror 4 Set the toe dial on the TLT 36 and TLT 37 to desired toe specifications 1 e 1 8 Note when setting the dial for example to 1 8 it equals a total of 1 8 overall toe or 1 16 on each side 5 Adjust the tie rod until the cross toe laser is reflected from the cross toe mirror back i
8. The two Laser Guns and the wheel targets are used to measure Toe Tracking Tandem and Offset Reading the Targets 1 The toe scale is used to dial desired toe specifications into both Laser Boxes Toe can be measured in millimeters inches or degrees The toe scale is located on the top of each Laser Box and is used in conjunction with the toe adjustment knobs and dial rings 2 The centering targets are used in two wheel centerline Tracking Tandem and Offset alignment The target is primarily used to measure the distance from the vehicle centerline These targets can also be used on a trailer to identify the Tracking Tandem and Offset of the wheels 3 The camber scale can be found on the Easy Check Gauge Camber can be measured on all wheels 4 The caster scale is on the Easy Check Gauge Caster is measured on the front wheels The bubble on the caster scale is adjusted with knob on the bottom right hand corner of the Easy Check Gauge 5 Caster can also be measured with a Digital Level eliminating the need for costly and heavy turn tables 6 The SAI KPI scale is on the top of the Easy Check Gauge SAI KPI is measured on the front wheels The Easy Check Gauge should be locked in place during SAI KPI measurement which is done with the locking screw tightened onto the mounting disk Unpacking and Assembling the System The system is shipped for the most part complete and ready to use However you will need to assemble a coup
9. alignment system is designed to align vehicles with rim diameters up to 25 alignment of vehicles with larger rim and tire diameters is possible By offsetting the center assembly of the TLT 28 Wheel Clamp is to accommodate the laser to reach around the oversize tire as seen in the diagram below The run out will still need to performed in the same fashion spelled out in the run out procedure section Caster Camber and SAI KPI are all performed in same fashion in the according sections One Size Wheel Configuration Figure 18 19 Measuring Caster Camber SAI KPI with the TL 30 Easy Check Angle Gauge Measuring Caster Camber SAI KPI is very simple and fast Before performing these measurements The equipment must be calibrated The wheel clamps must be mounted and adjusted for run out The full weight of the vehicle must be on its wheels It is recommended to use turntables and when measuring caster and SAI KPI Measuring Camber Camber readings are taken on the front wheels with the TLT 30 Easy Check Gauge To measure rear camber use the bubble scale on each of the Combi Gauges Note that rear camber only needs to be adjusted when performing a four wheel alignment 1 2 3 Hang the TLT 30 on the left front wheel clamp to measure camber With the wheels in a straight ahead position note the reading of the camber bubble on the TLT 30 and compare with desired specifications Repeat process on the righ
10. ance isien exci sens uteckd aea REEE E E EEEE E AAT TESE 32 Two Year Limited Warranty eseseeeeesseeseessessreseessessresressessressrestesressreseesresseesresersseesee 32 SERVICE INSTRUCTIONS niniin a EEN E E E E E 33 Introduction The Tru Line TLT 12 Laser Wheel Alignment System consists of the following components 2 TLT 28 Truck Wheel Clamps 1 TLT 41 Calibration Bar 1 TLT 30 Easy Check Gauge 1 TLT 44 Level Compensator 1 TLT 31 Brake Pedal Depressor 1 TLT 51 Calibration Laser 1 TLT 32 Steering Wheel Holder 1 TLT 52 Wheel Centering Target 1 TLT 36 Right Laser Gun 1 TLT 53 King Pin Center Target 1 TLT 37 Left Laser Gun 1 TLT 56 Digital Level Documentation Optional components TL 28 Passenger Car Wheel Clamps TLT 502 Case TLT 29 Aluminum Wheel Adapters TLT 60 Frame Centering Targets Note Drawings of each component is included in the procedure sections to follow These components can be used with an alignment rack turntables or slip plates in the front to do an alignment No dedicated rack or level surface is required Alignment of vehicles can be easily done almost anywhere and the type of vehicle range from Tractors Trailers Busses R V s and other types of heavy equipment All types of alignments can be done the most common being toe two wheel centerline tracking tandem and offset The Laser Guns are stored on the Calibration Bar so that a complete calibration of the system can easily be do
11. are facing forward keep in mind toe is opposite IN is OUT and OUT is IN on the toe dials 30 LLLLLLLLLLLL LLL LLL GL LLL KN Tracking 31 Maintenance Warranty amp Service Maintenance The system requires minimal maintenance We recommend that the batteries be replaced once a year to minimize the possibility of damage due to leakage Damage caused by leaking batteries is not covered under warranty If the laser reflection seems to be dim take a soft cloth with a glass cleaner gently wipe the mirrors on the gauges REMOVE TWO ALLEN SCREWS TO OPEN REAR END CAP Ae gt Note When closing the rear end cap Do Not Pinch the Wire Two Year Limited Warranty Tru Line Wheel Alignment Systems are guaranteed to the original owner for a period of two years from the date of purchase Tru Line will repair or replace at its options for the full two years those parts returned to the desired and proves to be defective after inspection by Tru Line This warranty does not cover damage caused by improper use abuse misuse or normal wear and tear In addition this warranty does not cover equipment when unauthorized repairs have been made or attempted by anyone other than a Tru Line service representative Note Do not leave the TL 30 EZ Check gauge in the direct sunlight on hot days Permanent damage to the bubbles will result
12. e axle adjustments your objective is to have the cross toe laser in the hole and have the lasers hit matching numbers on the Wheel Centering Targets i e if the laser hits at 3 on the left scale it should hit a 3 on the right scale 29 Offset Procedure Offset is when a vehicle s rear axles are mounted to the vehicle chassis out of center to each other and the vehicle chassis You must follow tracking on one axle before you move to offset 1 2 3 4 5 6 Place both TLT 28 Wheel Clamps on one side of the vehicle to be measured for offset Perform Run out on each wheel clamp Hang a laser gun on one of the wheel clamps Level it and turn it on Set the Toe Dial to zero Place a centering target next to the front wheel with the flag touching the rim and the scale pointing towards the rear of the vehicle The number one 1 on the scale should be touching the wheel rim Place the TLT 51 Calibration Laser on the other wheel clamp disc Turn it on and point it at the Centering Target If both laser beams meet at the same point within a 2 a number on the centering target then there is no Offset If the laser beams do not meet at the target then adjust the axles until the beams meet according to the vehicle manufacturer s specifications NOTE By using your frame as a reference you need to check that the axle in question is not in a leading condition One side is ahead of the other NOTE When the guns
13. e caster bubble to zero using the knob on the body of the TLT 30 AAS OONDO N O 6 Turn the wheel in a total of 40 degrees or until the wheel is 20 degrees in on the scale of the turntable 7 Read the number corresponding to the bubble on the caster scale Fig 21 Record and compare the reading to the desired specifications 8 To perform a live caster adjustment rotate the top caster scale to the corresponding reading taken previously 1 e left is 1 degree 9 Proceed with the adjustment to meet specifications 10 Repeat the caster measurement to verify live caster adjustment Figure 21 25 Two Wheel Centerline Alignment The purpose of a Two wheel Centerline alignment is to align the front wheels to the theoretical centerline of the vehicle This is accomplished by adjusting the front wheels to match up with the centerline of the vehicle The following should be completed before making any measurements or adjustments 1 2 3 4 5 6 1 2 3 4 5 1 2 3 Equipment should be checked for calibration The full weight of the vehicle must be on its wheels The suspension must be inspected Wheel clamps must be installed on the front wheels Run Out must be completed on the wheel clamps Adjustments for caster camber and SAI should have already been completed Reading Toe Procedure Lock steering wheel in the center position Hang the TLT 36 and TLT 37 Laser
14. ed side disk in the normal way and zero the caster bubble using the caster zero knob Fig 9 Caster Zero ae x 4 P Locki Nut Red Side eal oe Locking Knob TT Height Adjustment Screw Figure 9 3 Reverse the bar on the ground so that the foot nearest the red side is now the black side Place the gauge on the black side which is now on the left Read the caster bubble and note the reading Fig 10 Read Caster Bubbler mi x Locking Nut Black Side Locking Knob lt Height Adjustment Screw Figure 10 4 Loosen the nut to adjust the height Adjust the screw until the caster bubble is one half of the way back to zero Lock the nut until tight Do not over tighten Fig 11 11 Caster Bubble 1 2 way to Zero A Locking Nut Black Side Locking Knob lt Height Adjustment Screw Figure 11 If the bar is properly calibrated the caster reading will be the same with the bar returned to the original position red side on the left Once the bar is calibrated it should not require recalibration Even so it is wise to periodically verify the calibration 12 General Alignment Procedure The following section is an overall guide for performing an ali
15. edures Using the TLT 41 Calibration Bar you are able to calibrate the TLT 12 wheel alignment system which consist of the TLT 30 EZ Check Gauge TLT 36 right Laser Gun and TLT 37 left Laser Gun For maximum accuracy it is important to check and if necessary recalibrate the alignment system regularly Calibrating the camber of the TLT 30 Note There is a pivot plate at the end of the TLT 41 which has a mounting disc attached to the end a small bubble vial affixed to the plate and an adjustment knob The pivot plate is designed to eliminate any pitch in the bar or non level surface It is used to calibrate the camber vials on the TLT 30 1 Place the TLT 30 EZ Check gauge Fig 6 on the mounting disc of the pivot plate This is located on the end of the TLT 41 calibration bar 2 Use adjustment knob just above the pivot plate to center the bubble inside the cross section of the vial This must be done with the gauge on the disc 3 Check the camber scale on the gauge If the bubble of the camber scale is at zero the gauge is calibrated However if the camber bubble is not at the zero position the gauge must be adjusted until the camber bubble is zeroed Note It does not matter which portion of the bubble you use the top bottom or middle portion can be used with equal precision What s important is that once you have decided on which part of the bubble to use you are consistent a If adjustments are needed use the ca
16. ey are not securely attached tap each leg with the palm of your hand and tighten the feet a little more with the clamping knob Repeat this process until the mounting feet are secure 6 Perform the run out procedure on the appropriate wheel clamps Note Although the slide plate assembly is usually centered for a large diameter tire you can loosen the locking screws and move the slide plate to the edge of wheel clamp then tighten the locking screws This will assure that the laser will shoot across the rear of the tires Do this before performing run out All the gauges are to be hung on the mounting disk of each wheel clamp The disk does not need to be centered on the wheel and the wheel clamp can be at any rotation on the wheel When the wheel clamps have been adjusted for run out they rotate along the same axis as the wheel Finally the three knobs that are just underneath the disk are used in conjunction with the TLT 30 to adjust for run out The RED knob will adjust the vertical angle of the disk and the two BLACK knobs will adjust the horizontal angle of the disk For example when the adjustment knob is either in the 12 o clock or 6 o clock position use the RED knob to make adjustments Or when the Red adjustment knob is either in the 3 o clock or 9 o clock position use the two BLACK knobs to make adjustments Mounting Disk N Black Runout Adjusting Knob 2 KX Red Runout Adjusting Knob SS nA
17. gnment with the TLT 12 The steps listed below are meant to give a basic understanding of what procedures are used and how they are performed to accomplish wheel alignment The steps given should generally be followed in the same order as they have been placed It may also be helpful keep this procedure close at hand Note Prior to any alignment it must be decided what type of alignment is to be performed and the system must checked for calibration 1 Check calibration of the TLT 12 alignment system 2 Put the vehicle on a rack or other appropriate setup Perform standard pre alignment checks and inspections Remember no alignment can be properly done with loose or worn suspension parts 3 Mount the TLT 28 wheel clamps on the two wheels The aluminum feet can be mounted on either the inside or outside of the rims whichever is more convenient Make sure the wheel clamps are securely in place 4 To adjust run out using the TLT 30 EZ Check gauge a b c d e g h Raise the vehicle so the wheels can rotate freely Place the TLT 30 on the disk located on the TLT 28 wheel clamp Using the TLT 30 gauge and with the installation knob on the TLT 28 at a 12 o clock position set the caster bubble to zero Rotate the wheel so that the installation knob is at a 6 o clock position Using the RED knob on the TLT 28 wheel clamp adjust the bubble on the TLT 30 halfway to the zero position using the numbers on the caster
18. he near reading in step 8 and the far reading in step 7 I E if the Left Laser Gun hits the 1 5 on the far Centering Target and the Right Laser Gun hits the 11 and on the near Centering Target the Left Laser Gun hits the 2 and the Right Gun hits the 11 Then only the Left Laser Gun would have to be adjusted to make the laser beams parallel 10 In case an adjustment is required To reset the dial ring to zero Fig 7 on the scale of the laser box Loosen the two 1 16 hex screws on the toe knob enough to move the dial ring freely Now tighten the hex screws 1 16th Hex Screws Ring Scale Zero Mark Dial Ring Figure 7 Calibration of the TLT 44 To calibrate TLT 44 it must be assembled Figure 20 shows the bar placed under the front wheels of the vehicle to be measured Since the bar rests near the front wheels it is tilted the same amount as the vehicle The compensation procedure that follows corrects for the tilt After assembly the bar is calibrated according to the following procedure on the following page 10 TLT 44 Level Compensator Bar Calibration Procedure 1 Place the bar on a firm surface One side of the bar has a red dot called the red side Place the bar with the red side on the left Fig 8 i gt Red Side Locking Nut Locking Knob Height Adjustment Screw Figure 8 2 Hang the TL 30 Easy Check Angle Gauge on the r
19. le of items in order to use the system to its fullest capability 1 To assemble the TLT 41 Calibration Bar Fig 1 Locate the bar which looks like a black bar with three disks on one end Then locate the legs for this bar They look like a T Assemble the bar with the provided screws in the bottom of the bar You will need a 5 32 hex key for this Figure 1 2 To assemble the TLT 44 Level Compensator Bar Fig 2 you will find in the crate a long bar with two pieces attached to it You will need to slide on the base foot assembly When finished it should look like this Locking Knob Mounting Disk Locking Nut a Height Adjustment Screw H Match to Tread Width _ Figure 2 3 Next you will find a pair of targets These targets mount either on the King Pin Target kit Fig 3 or the Wheel Chock Target Stands Fig 4 The targets have plastic thumbscrews for easy mounting and dismounting Please note that when assembling these Targets they must be mounted exactly mirror image from each other in order to obtain the highest accuracy When assembled they should look like this Cc o o f o o o Gam 12 11 10 987654321 12345678910 11 12 Target Kits Figure 3 O 9 12 11 10987654321 SSDS EDS DS BS GA ES GG A E SS RA A eT Wheel Chock Target Figure 4 Calibration Proc
20. mber adjustment knob which is in the middle of the vertical post of the gauge 4 Once the camber bubble is zeroed on the camber scale calibration is complete for the camber on that gauge SAI Scale SAI Lock Camber Zero Set Caster Scale Caster Zero Adjustment Camber Scale TLT 30 Easy Check Gauge Figure 6 Calibrating the TLT 56 Digital Level Note There is a separate set of detailed instructions included with the TLT 56 Digital Level SMART Tool 1 Place the TLT 56 Digital Level on a flat surface 2 Wait ten 10 seconds 3 Push and hold the CALIBRATE button for 2seconds CAL1 will appear briefly on the display 4 Rotate the TLT 56 Digital Level end for end Wait ten 10 seconds 5 Push the CALIBRATE button again CAL2 will appear briefly on the display The TLT 56 Digital Level has now been calibrated for level Calibrating the toe settings for TLT 36 right Laser Gun 1 2 3 4 5 6 7 8 9 and TLT 37 left Laser Gun Place the TLT 41 Calibration Bar on a firm surface orientated so that the end of the bar that has the mounting discs on it is opposite of a clear distance of at least twenty 20 feet Hang a laser gun on one of the discs of the TLT 41 Calibration Bar Level the laser gun and turn it on pointing towards the clear distance of at least twenty feet 20 away Zero the Toe Dial Go out a distance of at least twenty feet 20 and place one of the Cente
21. ne before use The components can also be hung on a wall It is recommended that the system be checked for calibration before each use and recalibrated when needed Tru Line is pleased to have you and your company as a client We are available to you to answer any questions that you may have Please feel free to contact us if there is anything further we can do to make Tru Line a better product for you and your company Tru Line 8231 Blaine Rd Blaine WA 98230 360 371 0552 phone 360 371 0553 fax 800 496 3777 toll free www tru line net How it Works The TLT 12 wheel alignment system measures Caster Camber SAI KPI Toe Tracking Tandem and Offset These alignments can reference the mechanical or actual centerline of the vehicle Two wheel centerline tracking and four wheel total alignments can be made Depending on the model of vehicle being aligned the technician chooses which type of alignment to do Although this manual presents standard two wheel tracking tandem and offset alignment procedures other variations are possible The procedures that have been laid out in the manual are a guideline that is proven in the field The technician can vary from the procedures to accommodate what they are comfortable with All measuring gauges are mounted on the wheel clamps by hanging them on the mounting disk If a clamp is dropped you will not damage the system itself The Easy Check Gauge is used to measure caster camber and SAI KPI
22. nob on the TLT 28 When making this adjustment it is important not to move the bubble with the caster adjustment knob 7 Rotate the wheel 4 turn to the right so the clamping knob is at a 9 00 o clock position Fig 15 Caster Zero Adjustment Figure 15 8 Level the TLT 30 and set the caster bubble to zero with caster adjustment knob 17 9 Rotate the wheel turn until the clamping knob is at a 3 00 o clock position Fig 16 Red Adjustment Knob Figure 16 10 Level the TLT 30 and read the number on the caster scale 11 Adjust the caster bubble to the point halfway between zero and the current reading using the two BLACK knobs on the wheel clamp 12 Rotate the wheel until the clamping knob is at a 12 00 o clock position Fig 17 Level the TLT 30 and adjust the caster knob until the caster bubble reads zero eae e Figure 17 With the TLT 30 held in a level position with one hand do not grasp or hold tightly rotate the wheel one full turn while watching the caster bubble If the bubble does not move more than 1 8 the run out procedure is complete otherwise repeat the procedure 18 Accommodating Oversize Truck Tires Although the Tru Line TLT series
23. nto the hole At this point the lasers should also be hitting the Centering Targets Check the numbers that the lasers are hitting a Your objective is to match the numbers or hit the same number on each Centering Target with a tolerance of 2 a digit For example if you are hitting a 4 4 on the left scale and a 5 on the right scale this is acceptable However if you are hitting a 2 on the right scale and 6 on the left scale then further adjustment is required In this case add the numbers together 2 6 8 and then divide the total in half 8 2 4 to get your target number 4 Since in this example 4 are your target number turn the steering wheel until you hit the number 4 Then adjust the tie rod on the left side until the laser hits the number 4 on the scale thus matching the numbers After making adjustments to the tie rod it is important that the cross toe laser is still in the hole Fig 22 If desired the steering wheel can be removed and then replaced in a straight position To check tracking on tandem drive wheels simply measure the distance between the rims on each side of the vehicle and make sure that the measurements are the same The Two wheel Centerline alignment is complete when the cross toe laser is reflected off the cross toe mirror back into the hole and the numbers on the Centering Targets match Note For vehicles with two tie rods you would simply adjust both tie rods evenly too walk
24. omparison with desired specifications Repeat process on the right front wheel Note Any and all adjustments to caster camber or SAI KPI if required must be made before measuring toe 7 Hang the TLT 36 right laser gun and TLT 37 left laser gun on the front wheel clamps so the lasers will shoot towards the rear of the vehicle a Turn the laser guns on and point them to the rear centering targets which should be placed next to the rear tires of the truck 8 For Two wheel Centerline set the toe dial on theTLT 36 and TLT 37 to desired toe specifications 1 e 1 8 it equals a total of 1 8 overall toe or 1 16 on each side Make adjustments as needed 14 Mounting the TLT 28 Wheel Clamps The wheel clamps Fig 12 can be attached to either the inside or the outside of the rim whichever is easiest They can be mounted on a wheel rim 17 inches to 25 inches in diameter and the aluminum feet are less likely to damage polished aluminum rims Mounting the Wheel Clamps 1 Adjust the clamping knob either in or out until the feet will fit the wheel rim 2 Rotate the mounting feet until they are all facing either the inside or outside of the rim This depends upon which side of the rim the wheel clamps are mounted 3 Place the mounting feet onto the rim Make sure they are all attached to the rim 4 Use the clamping knob to tighten the feet to the rim 5 Make sure the mounting feet are securely on the rim If th
25. re 1 Hang the TLT 30 the left front wheel clamp to measure SAI KPI Fig 19 2 Install brake pedal depressor and lock brakes so they do not rotate With power brakes start the engine to install brake pedal depressor 3 Release the pin on the turntable This allows the wheel to pivot or turn freely 4 From a straight ahead position turn the wheel out 20 degrees Use the scale of the turntable to confirm swing 5 Rotate the gauge left until the SAI KPI scale on the left side is zeroed Note that there is a right and a left zero position of the scale both of which are on the bottom half of the SAI KPI scale Lock the TLT 30 in place using the thumbscrew which is located just below the scale Do not turn the camber calibration screw which is on the vertical bar of the TLT 30 6 Turn the wheel in a total of 40 degrees or until the wheel is 20 degrees in on the scale of the turntable 7 Take the reading on the SAI KPI scale record and compare it to desired specifications 8 Repeat process on the right front wheel Note When performing step 4 rotate the wheel right until the SAI KPI scale on the right side is zeroed For all of the other steps follow the same procedure Note Any and all adjustments to SAI KPI must be made before measuring toe Caster Adjustment Figure 19 21 Measuring Caster with the TLT 56 Digital Level SMARTToolI There is another way to read Caster on Heavy Duty Truck wi
26. ring Target Flags so that the Target Scale is level with the laser gun Remove the Laser Gun and replace it with the TLT 51 Calibration Laser Once the TLT 51 Calibration Laser is on the disc turn it on and point it at the Centering Target that is twenty 20 feet away Adjust the Centering Target Flag so that the laser beam from the TLT 51 Calibration Laser is on either the 2 or 11 of the Centering Target Scale Remove the TLT 51 Calibration Laser and place it on the opposite disc Point the laser beam at the Centering Target Flag and make note of the number it is on either the 2 or 11 The TLT 41 Calibration Bar is now on center with the Centering Target Flag Remove the TLT 51 and hang both Laser Guns TLT 36 amp 37 on the discs of the TLT 41 Calibration Bar Level them at the Centering Target Flag turn them on and set the Toe Dials on Zero Make note of where the laser beams hit the Centering Target Flag that is Twenty 20 away LE the 2 and 11 Take the other Centering Target Flag and place it in front of the laser beams at the end of the Laser Guns Make note of where the laser beams hit the Centering Target Note You may have to flip the Centering Target upside down in order to read the target on the same numbers as the far target If the distance marks on the near Centering Target is not the same as the distance mark on step 7 Adjust either one or both Toe Dials until an equal distance mark is obtained both at t
27. ster reading on one side of the truck please proceed to read caster on the other side by using the same procedure starting at step 3 3 94 3 9 Negative Caster Positive Caster 22 Measuring Caster Camber and SAI KPI on a Non Level Surface When the vehicle is not on a level surface the procedure is somewhat different The TLT 30 Easy Check Angle Gauge is used in conjunction with the TLT 44 Level Compensator Bar to correct the readings If the technician follows the procedure readings with full accuracy will be obtained Even though the measurements are accurate the ground should be reasonably near level to assure that the vehicle suspension is not affected When the calibration procedure is complete measurement of camber is done as follows 1 Mount TLT 28 Wheel Clamps on front wheels both sides 2 Raise wheel and adjust run out using the standard procedure both sides 3 Lower wheel onto turn table and remove locking pin both sides To Measure Camber on a Non Level Surface 1 Place TLT 44 Level Compensator Bar that has been assembled to match the tread width and is calibrated in front of wheels as shown in Figure 20 2 Beginning on the left side hang TL 30 Easy Check Angle Gauge on the mounting disk on the left side of the Level Compensator Bar and adjust camber zero knob to zero the camber bubble 3 Measure camber on the same left of the vehicle 4 Repeat steps 2 and 3 on the right side NOTE Remember to
28. t front wheel clamp Note Any and all adjustments to camber must be made before measuring toe Caster readings are taken on the front wheels using the TLT 30 amp a set of Turn Tables 2 3 4 5 6 7 8 Measuring Caster Hang the TLT 30 on the left front wheel clamp to measure caster Install brake pedal depressor and lock brakes so they do not rotate With power brakes start the engine and install brake pedal depressor Release the pin on the turntable This allows the wheel to pivot or turn freely From a straight ahead position turn the wheel out 20 degrees Use the scale on the turntable to confirm swing Level the TLT 30 using the SAI scale on the top of the TLT 30 adjust the caster bubble to zero using the knob on the body of the TLT 30 Turn the wheel in a total of 40 degrees or until the wheel is 20 degrees in on the scale of the turntable Read the number corresponding to the bubble on the caster scale Record and compare the reading to the desired specifications Repeat this process on the right front wheel Note Any and all adjustments to caster must be made before measuring toe AmMBDe rot AmAnroa OONDU N O 20 Measuring SAI KPI When measuring SAI KPI the Brake Pedal Depressor TLT 31 must be installed so the wheel does not rotate Note If the car has power brakes run the engine while performing this procedu
29. th a solid front steer axle This method provides an accurate caster reading and gives the user the ability to make caster measurements and adjustments with out having to purchase turn tables which can be heavy and costly To measure caster using the TLT 56 Digital use the following procedure 1 Calibrate the smart level by following the directions on the back of the smart level 2 Lift the truck engine cowling or tilt the cab to expose the steer axle 3 Clean the flat area on the steer axle where the axle u bolts mount to the axle and spring assembly of any built up grease or road tar amp dirt 4 Place the smart level on the flat area next to the u bolt assembly Making sure that all of the TLT 56 Digital Level s flat surface is touching the axle In some cases this might require the technician to crawl underneath the truck to access the axle 5 Read the digital scale on the smart level Smart levels always have arrows that point which direction goes to zero degrees If the arrow on the side of the scale window that is near the front bumper of the truck is pointing down to the ground and the arrow on the other side of the scale window is pointing up Then the reading would be positive caster Please refer to the figure below to describe further 6 If the reading is being taken on a non level surface please use the To Measure Front to Rear Tilt for Caster procedure to compensate for non level surfaces 7 After taking the ca
30. the lasers to the desired even numbered adjustment 27 LLLLLLLALLALLALALLLLLLLAL RRA ZLLLLLLL LLL Two Wheel Centerline Alignment LLLL LLL LLL LLL A i Figure 22 28 Tracking amp Offset The purpose of a Tracking is to adjust the rear axles until they are aligned with the vehicle chassis These procedures can be used on a trailer as well by using our King Pin Target kit The following should be completed before making any measurements or adjustments 1 Equipment should be checked for calibration 2 The full weight of the vehicle must be on its wheels 3 The suspension must be inspected 4 Rear wheel clamps must be installed 5 Run out must be completed on the rear wheel clamps Tracking Procedure NOTE Use the procedure of the TWO WHEEL CENTERLINE ALIGNMENT section and complete the additional procedures to complete Tracking 1 Place the TLT 28 wheel clamps on the rear tire and complete the run out procedure 2 Place the TLT 36 and TLT 37 Laser guns on the rear of the vehicle with the lasers facing to the front 3 Adjust the TLT 36 and TLT 37 for total rear wheel toe 4 Place the Wheel Centering Targets next to the front tires with the flag numbers face to the rear 5 Look at the Wheel Centering Targets Adjust axle until the lasers hit the opposite numbers on the Wheel Centering Targets Refer to figure 23 Note After making th
31. zero the camber gauge each time before you measure camber To Measure the Side to Side Tilt for SAI KPI SAI KPI readings are affected by the side to side tilt of the vehicle The following procedure compensates for the tilt to give full accuracy SAI KPI readings You can make the SAI KPI readings first or after this procedure 1 Place the bar in front of the wheels as shown in Figure 13 with the red side on the right side 2 Hang the gauge on the red side and zero the camber bubble using the camber zero adjust knob refer to Figure 3 23 3 Hang the gauge on the black side and read the camber 4 Adjust the bubble half way back using the camber zero adjust knob The camber gauge now reads the tilt on the ground 1 Place the gauge on the red side and read the tilt of the ground Whatever the SAI KPI readings are add the ground tilt reading on the right side and subtract the reading on the left side IE If the tilt of the ground is 1deg and the right side reading is 12 deg s and the left side reading is 14 deg s the corrected readings would be 13 deg s on the right and 13 deg s on the left To Measure Front to Rear Tilt for Caster Caster readings are affected by front to rear tilt of the vehicle The following procedure compensates for the tilt to give full accuracy caster readings You can measure caster first by following this procedure 1 Place the bar along the side of the vehicle Make sure the ground is reasonably
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