PreSet Service Manual Rev B.pmd
Contents
1. u02222022000000000020n0nnnn nenn 13 installing the HUDCAD EEE ee SE 13 SET 0 HU EEE EE ee en EN 14 Semi Fluid Grease Lubricant rrrnnrrnannnnnnenanrnnanrvanrnrannnnnnnnnnnnnennnnnennnnnn 14 Brake Drums and Wheels rranrnnnrrnnrnnnnnnnnnnnrnannnannnnnnnnnnnnnnnnnnnnrnnnnnnnnnnne 15 Hub Pilot Wheel Mounting System rrrrnnnrrnnnrnnnnrrvnnnvnvnnnnnnn 15 16 Ball Seat Wheel Mounting System rrrrnnrrnnnrrnnnnrrvnnrrnnnnrnnnn 16 17 Peca pe EE ee eC ee 18 19 one or toe NS ted INDUSTRIES IMPORTANT REMINDERS Read this manual carefully providing extra attention to its explanations and instructions To ensure safe continuous trouble free operation understand your wheel hub system and keep all components in proper operating condition Pay particular attention to all NOTES CAUTIONS WARNINGS and DANGERS to avoid the risk of personal injury or property damage and realize these statements are not exhaustive ConMet cannot possibly know or evaluate all conceivable methods in which service may be performed or the possibly hazardous consequences of each method Accordingly those who use a procedure not recommended by ConMet must first satisfy themselves that neither their safety nor the safety of the product will be jeopardized by the service method selected Use only ConMet approved replacement parts Do not attempt to use damaged parts DISC WHEEL INSTALLATION PROCEDURES ConMet part number 103232. Always tighten the top nut first to fully seat the brake drum on the drum pilot and against the hub face See the adjacent diagram for bolt tightening sequence and tighten in order from 1 through 8 or 10 depending on the bolt pattern see figures 35 36 10 Stud Tightening Sequence FIGURE 35 8 Stud Tightening Sequence FIGURE 36 1 Remove all foreign material to ensure the drum fits the drum pilot properly and can fully seat against the hub mounting face Consolidated Metco Inc 2 In environments where a corrosion inhibitor is beneficial ConMet recommends the use of Corrosion Block a product of Lear Chemical Research 905 564 0018 In severely corrosive environments a light coat of Corrosion Block on the drum and wheel pilots has proven beneficial 3 In addition to the above preparation apply two drops of oil to a point betweeen the nuts and nut flange washer and two drops to the last two or three threads at the end of each stud Also lightly lubricate the pilots on the hub to ease wheel installation and removal Do not get lubricant on the mounting face of the drum or wheel Failure to clean lubricant from these surfaces may result in decreased clamping load 4 Before installation of brake drums and wheels that utilize the hub piloted system rotate the hub so one of the wheel pilot bosses is at the top 12 o clock position see figure 37 Whee Pilot Boss Rotating the Hub FIGURE
3. Spacer Hub Disassembly FIGURE 18 Inner Bearing Retainer is not on Hubs equipped with CR Seals All components replaced under warranty must be returned for consideration of reimbursement Contact the OEM manufacturer for their warranty return policy INSPECTION REPAIR AND REPLACEMENT BEARING CUPS AND CONES ZN CAUTION If a bearing cup or cone shows signs of deterioration replace the suspect part along with the mating component Use the appropriate replacement parts to ensure proper bearing adjustment see table 5 When reinstalling cups be certain they are pressed fully against their seats 1 Thoroughly clean and degrease all components with a nonflammable solvent 2 If required on an aluminum hub remove the bearing cup by welding a large bead around the bearing surface of the steel cup letting the assembly cool and removing the bearing cup see figure 19 Bearing Cup Pressed into Hub FIGURE 20 6 Iron hubs do not need to be heated for bearing cup installation Press the bearing cup into the hub using the appropriate assembly aids WHEEL STUDS Replace all wheel studs that have damaged or distorted threads are broken or bent or are badly corroded Also replace both studs adjacent to the damaged stud If two or more studs have damage replace all the studs in the hub Broken studs are usually an indication of Welding Bead excessive or inadequate wheel nut torque FIGURE 19 l l l On an iro
4. When using an oil bath system do not pack the bearing with grease Grease will prevent the proper circulation of axle lubricant and can cause premature wheel seal and bearing failure 1 Place the hub seal end up on a clean work bench surface 2 For steer hubs install the tubular bearing spacer with the tapered end down see figure 24 Bearing Cone Assembly for Steer Hub FIGURE 24 3 Lubricate the inner bearing cone with the proper wheel end lubricant and install it into the inner bearing cup see figure 25 The seal must be replaced every time the hub is removed from the spindle Do not apply any gasket sealant to the seal outer or inner diameter Always use the seal installation tool specified by the seal manufacturer Using an improper tool can distort or damage the seal and cause premature seal failure If using the Dana Outrunner Wheel Seal place the seal with the air side facing the adapter plate of the installation tool If using the Chicago Rawhide ScotSeal Plus XL Wheel Seal no special installation tools are required Consolidated Metco Inc Bearing Cone Assembly for Drive Hub FIGURE 25 A Lubricate the seal outer diameter and the hub seal bore with wheel end lubricant 5 Position the seal in the hub bore 6 When installing the Dana wheel seal tap the adapter plate around the outer edge to position the seal 7a Drive the Dana seal into place see figure 26 Once t
5. FIGURE 31 4 Engage any locking device that is part ofthe spindle nut system If the locking system cannot be engaged when the nut is at 300 Ft eLbs advance the nut until engagement takes place and the nut is locked Ifa double nut or jam nut system is being used bend the lock tab or install the set screw after the outer nut is torqued to 200 Ft Lbs INSTALLING THE HUBCAP The hubcap bolt holes must be free of debris such as silicon gasket sealer to ensure the bolts will tighten properly to avoid leaks The vent should also be clean and free of debris Remove any burrs or sharp edges Always use new gaskets 1 Install the hubcap A ConMet PreSet hubcap is available for trailer hubs to aid in identification of the assembly in the field Use SAE Grade 5 bolts or stronger Do not use star washers or split lock washers as they will allow contaminants to corrode the threads Use only flat washers with no locking features 2 Torque the hubcap bolts to 12 18 Ft eLbs using a star pattern N CAUTION If you are using semi fluid grease special procedures must be followed as outlined in the Semi Fluid Grease Lubricant section REINSTALLATION OIL LUBRICANT SEMI FLUID GREASE LUBRICANT Use any oil approved for use with manually adjusted bearings refer to trailer or tractor OEM for oil recommendations Failure to fill and maintain the hub with the correct amount of semi fluid grease may cause premature failure
6. see figure16 the same drum pilot diameter as the one that has been removed Brake imac Typical Spindle Nut System FIGURE 16 Measuring Stud Standout 5 Slide the hub off the spindle being careful to FIGURE 13 protect the outer bearing cone from falling Remove and save the outer bearing cone N CAUTION Occasionally the seal can become stuck on the spindle making the hub difficult to remove If mechanical assistance is required 2 Remove the wheels and brake drum see Figure 14 to remove the hub care should be used to avoid damage to hub components see figure 17 In some cases part of the seal will remain on the spindle When removing this portion of the seal care should be taken not to damage the spindle or seal journal Removing the Wheels FIGURE 14 Consolidated Metco Inc 7 Hus REMOVAL AND DISASSEMBLY Mechanical Puller FIGURE 17 ConMet makes several tools to assist in the removal of hubs These tools are available for purchase and are listed in the back of this manual see tables 6 and 7 6 Place the hub on its outboard end and remove and discard the seal if it does not need to be retained for warranty rembursement 7 If present remove and discard the inner bearing retainer The stamped steel retainer secures the inner cone during shipment and has no purpose in service see figure 18 Consolidated Metco Inc Inner Bearing Retainer Inner Bearing lone
7. 37 5 Position the brake drum over the hub so it seats on the drum pilot and against the hub face 6 Place the wheel s into position One or more nuts can be started in order to hold wheel s and drum into position 7 Tighten the top nut first Apply 50 FteLbs torque to draw the brake drum up fully against the hub see figure 38 REINSTALLATION Reinstalling the Wheel FIGURE 38 8 Install the remaining wheel nuts and using the sequence as shown torque all the nuts to 50 Ft eLbs then retorque to 450 500 Ft Lbs see figures 35 36 The last nut rotation must be with a calibrated torquing device 9 Inspect the brake and wheel installation by checking the seating of the wheel s and drum at the pilots and by turning the wheel s and checking for any irregularity AN DANGER Excessive or inadequate wheel nut torque can result in a failure of the wheel mounting system After the first 50 100 miles retorque all the nuts to 450 500 Ft Lbs Ball Seat Wheel Mounting System Clean all mating surfaces on the hub drum wheels and nuts Remove loose paint scale and any material building around the pilots of the drum hub and wheels Be sure paint is fully cured on recently refurbished wheels When dual wheels are mounted the stud length beyond the brake drum standout should be from 1 31 1 44 as measured from the brake drum to the end of the stud see figure 39 When mounting dual aluminum wheels use
8. and oven temperatures may require the bearing cup to Some hubs are configured so it is impractical to have supports to be pressed in to the hub see figure 20 using the prevent the hub from tipping when force is applied to the stud In l f this case support the hub on wood blocks on the floor and use a appropriate assembly aids as listed in the back of this heavy hammer to drive the studs out with several sharp blows manual see table 6 If the cup is loose allow a few Be careful to avoid damaging the hub and components particu seconds for it to heat up and secure itself before moving larly the seal bore and the ABS tone ring the hub 2 Press the stud out of the hub Consolidated Metco Inc 9 INSPECTION REPAIR AND REPLACEMENT STUD REPLACEMENT On the ball seat wheel mounting system always use left handed threaded studs on left handed hubs and use right handed threaded studs on right handed hubs The ConMet part number is located on the head of the stud The same part number must be used for replacement unless changing the drum or wheel type 1 To install anew stud support the hub evenly around and adjacent to the stud being installed 2 Press the new stud all the way into the hub Be sure the stud is fully seated and that the stud head is not embedded into the hub N WARNING If the stud head is embedded into the hub the hub should be replaced ABS TONE RING AS APPLICABLE 1 Inspect the ABS Ton
9. and that there is no sign of contamination 3 If additional grease is required use the fill hole in the barrl of the hub to add grease until it is clearly migrating through the outboard bearing N CAUTION DO NOT mix grease types If grease is added make sure it is the same type installed by the OEM Grease Contamination Visually inspect the grease for discoloration Under normal conditions the grease may darken slightly A white or milky appearance indicates water contamination If the inspection indicates contamination completely service the PreSet Hub by following the instructions in the manual PERIODIC INSPECTION AND PREVENTIVE MAINTENANCE FUNCTIONAL CHECKS In addition to the Annual Inspection the following functional checks should be done in conjunction with brake ortire service Nezj Conduct the following inspections with the wheel s and drum removed N WARNING Never work under a vehicle supported by a jack without supporting the vechicle with stands and blocking the wheels Rotate the hub and check for free smooth and quiet rotation If rotation is hampered PreSet Hubs should be serviced immediately Checking for End Play FIGURE 12 2 Grasp two wheel studs across from each other and pull and push the hub while oscillating it Measure End Play 3 Measure the end play by the difference between the 1 Remove the hubcap and use a dial indicator with a minimum and maximum dial indicator readings
10. magnetic base mounted on the spindle end to read the N CAUTION travel atthe hub cap mounting surface see figure 12 PreSet Hubs should be serviced if end play exceeds 0 006 Consolidated Metco Inc 6 HUB REMOVAL AND DISASSEMBLY NOTE N WARNING Never work under a vehicle supported by a jack without If the hub to be disassembled is a drive hub remove the drive axle supporting the vechicle with stands and blocking the wheels shaft and capture the oil see figure 15 1 Prepare the axle for disassembly by using a jack to raise the axle until the wheels are off the ground and the axle is properly supported N CAUTION Care should be taken to avoid damaging the hub or other components If you plan to replace the brake drum i e cast in place of Centrifuse or wheels i e aluminum in place of steel measure stud standout see figure 13 In hub piloted mounting systems the studs must be long enough for the threads to be exposed beyond the installed wheel nut In the ball seat Removing the Drive Axle Shaft mounting system the stud length beyond the brake drum should FIGURE 15 be from 1 31 1 44 as measured from the brake drum to the 3 Examine the spindle nut to determine the locking end of the stud Call ConMet at 1 800 547 9473 for the correct dar number a E on system and disengage the locking device If you plan to replace the brake drum verify the new drum has 4 Remove the spindle nut system
11. of the wheel hub system bearing failure and possible loss of the wheel and will Some hubs are provided with a fill hole located in the barrel and between the bearings for adding lubricant 1 Fill the hub through the hubcap or the fill hole with oil NOTE It may be necessary to add lubricant more than once to Please refer to TMC RP 631A for the recommended fill and adequately fill the hub see figure 32 maintenance procedures 1 If the hub is equipped with a fill hole remove the fill hole plug void your warranty 2 Fill the hub with the OEM recommended amount of room temperature 60 F minimum semi fluid grease through the fill hole in the hub Figure 25 Filling the Hub with Oil FIGURE 32 2 Be certain the hub cap is properly filled to the oil level mark on the face of the cap see figure 33 Filling Hub with Semi Fluid Grease FIGURE 25 3 Reinstall and tighten the fill plug to 20 25 Ft Lbs Full Line Fill to Oil Level Line FIGURE 33 Consolidated Metco Inc 14 REINSTALLATION BRAKE DRUMS AND WHEELS Hub Pilot Wheel Mounting System N CAUTION The brake drum must be fully seated on the drum pilot and against the hub face during and after installation of the wheel s If your shop practice requires the use of lubricant or anti corrosion material to the threads and or the drum pilot area avoid getting lubricant on the flat mating surfaces of the hub drum and wheels PAANANEN
12. the wheel mounting system After the first 50 100 miles retorque all the nuts to 450 500 Ft Lbs Always remove the load from the wheels by jacking the truck or trailer up when retorquing Loosen the outer nuts to retorque the inner nuts SPECIFICATIONS Service Parts List TABLE 5 NOTE BEARING CUPS amp CONES MUST BE REPLACED AS ASET FF Front Steer Axle TN Trailer Axle ConMet PART ConMet PART NUMBER DESCRIPTION NUMBER DESCRIPTION 107500 Bearing 107504 107501 Bearing 107500 TP Trailer Axle ConMet PART NUMBER DESCRIPTION 107502 Bearing 107506 107503 Bearing 107506 R Series Drive Axle ConMet PART NUMBER DESCRIPTION Note PreSet rebuild kits include all bearing cups amp cones spacer and oil seal Assembly Aids Kit Part No 107508 TABLE 6 av 1 107526 Cup Pusher Trailer TN Inner 107529 Cup Pusher Trailer TP Inner or NP503727 Outer NP593561 107527 Cup Pusher Trailer TN Outer 107530 Steer Inner NP026773 Cup Pusher Drive Inner NP363298 107531 107528 Cup Pusher Steer Outer NP435398 Cup Pusher Drive Outer NP053874 Dissembly Aids Kit Part No 107532 TABLE 7 107533 Cup Knockout Trailer TN Inner 1 107537 Cup Knockout Drive Inner NP503727 NP363298 107534 Cup Knockout Trailer TN Outer NPO26773 107538 Cup Knockout Drive Outer NP053874 107535 Cup Knockout Steer Outer NP435398 107539 Cup Knockout Trailer TP Inner or Outer NP593561 107536 Cup Knock
13. 2 OIL DECALS ConMet part number 106873 and SEMI FLUID DECALS ConMet part number 107383 are available upon request Notes These activities include additional information that may assist the technician in service x OT procedures see figure 1 FIGURE 1 Cautions These activities indicate that product damage may result from failing to heed the stated advisory AN ONE T O N see figure 2 FIGURE 2 Warnings Associated activities indicate that personal injury may result from failing to heed the advisory Personal injury is AWARN N not equated to career ending injury but may result in possible change in quality of life see figure 3 FIGURE 3 Dangers Associated activities indicate that death or serious personal injury may result from failing to heed the stated advisory VAN BEAN e R Serious personal injury may be equated to career ending injury see figure 4 FIGURE 4 Consolidated Metco Inc 2 INTRODUCTION Consolidated Metco Inc is recognized as the leader in the design and manufacture of lightweight low maintenance components for the heavy truck industry ConMet PreSet Wheel Hub technology offers the best solution to prevent premature wheel hub failures When installed as OEM equipment ConMet PreSet Hub Assemblies offer a three year 350 000 mile warranty on tractors and five years on trailers With periodic inspections and proper lubricant level maintenance actual service intervals ca
14. ALCOA inner cap nuts 5978R and 5978L or the equivalent These nuts can also be used with longer studs up to 1 88 standout For special single aluminum wheel applications on drive and trailer hubs use ALCOA single cap nuts 5995R and 5995L or 5554R and 5554R and 5554L or the equivalent depending on the stud thread length see table 3 For single steel wheel applications use BATCO 13 3013R and 13 3013L or the equivalent see table 4 Consolidated Metco Inc om Brake Huh Liru Stud Standout FIGURE 39 ALCOA Cap Nut Number 5995 R and 5995 L or 5554 R and 5554L depending on stud length Single Aluminum Wheel Applications TABLE 3 BATCO Cap Nut Number Aluminum Wheels 3 4 16 Threaded Studs Steel Wheels 3 4 16 Threaded 13 3013 R and 13 3013 L Studs Single Steel Wheel Applications TABLE 4 1 When installing the inner dual verify the inner nuts being used are suitable for the application aluminum wheels steel wheels brake drum thickness ZN CAUTION Inner cap nuts must be deep enough to ensure the stud will not bottom inside the nut and must be of a configuration approved by wheel manufacturer 2 Rotate the hub to bring a drum pilot to the top 12 o clock position see figure 40 Position the inner wheel and tire assembly over the studs against the drum Drum Piloi Rotating the Wheel Pilot to 12 O Clock FIGURE 40 16 REINSTALLATION 3 Beginnin
15. PreSet Hubs Service Manual Pre Adjusted Bearings Steer Drive and Trailer Applications Imporan Reininders FN err enennnnnisssckenen 2 fa 116 810 IDG eg 1 i E E a ee re ae ee ae ner 3 ole a1 182 11 6 EE BIER Smeets amp ele EEE ese ERS EN EE 4 PRESET Wheel Hubs re oubdedwncbpsamnicedsatedeucdeetoden 4 Wheel Mounting Systems ccccccsecccesecceseecceeeeceeeeeceueessuseeseseessaeseneas 4 Hub Pilot Wheel Mounting System cccccseeesseeeeseseeseeeeens 4 Ball Seat Wheel Mounting System rrrnnnnrnnnnvnnnnrrnnnrrnrnnrennnnen 4 Periodic Inspection and Preventative Maintenance 22002202200200en nenne 5 Visual Inspection Oil Lubricated 00222022200222022nnnnneennenenenenn 5 Visual Inspection Semi Fluid Grease Lubricated 5 F nctional SS CIS u nee ee en 6 Hub Removal and Disassembly ccccsccceececeeeceseesseecesecseeeecseeseusenseesaseenaess 7 8 Inspection Repair and Replacement cccccccscccseceecceeeccseceeeceeesaeesaeeseeseeesnans 9 Bearing Cups and COneE naeh 9 MSS SS ee ee ee ee een 9 SURAT en 9 Stud Replacement une 10 ABS Tone Ring As Applicable 22222022220020000000n0 Benno nennen 910 Reassembly PreSet Wheel Hubs 22002242002000000000000nnonnnnn nennen ennennn 11 12 Reinstallation ve ee ee ee re ee 13 Installing the PreSet Wheel Hub
16. e Ring for any damage caused during hub removal or hub servicing 2 If replacement is necessary use a small pry bar see figure 21 or hammer to gently remove the ring using a circular pattern around the ring to prevent cocking Using Pry Bar to Remove ABS Ring FIGURE 21 3 Thoroughly clean and degrease the ABS ring seat on the hub with a nonflammable solvent Replace the hub if the ABS ring seat is damaged The ABS ring must be fully seated with a maximum of 0 008 axial runout to ensure the ABS system functions properly NOTE For steer hubs be certain the inside diameter flange is facing up Consolidated Metco Inc 4 Place the hub in a press and place the ABS ring on the hub ring seat 5 Using ConMet ring installation tool part number 107119 center the tool over the ABS ring Each type of ring fits a corresponding diameter on the tool see figure 22 Installing the ABS Tone Ring FIGURE 22 6 Press the ring on the hub If a press is not available drive the ring on with a hammer or mallet until the ring seats on the hub see figures 22 23 Using a Hammer to Install the Ring FIGURE 23 7 Inspect the ring to ensure proper seating If the ring is not completely seated continue to drive the ring with the ring installation tool until the ring is completely seated A dial indicator can be used once the hub is reinstalled on the spindle to check axial runout REASSEMBLY PRESET WHEEL HUBS
17. g in the 12 o clock position install the inner cap nuts by hand to ensure they are not cross threaded Do not tighten any nuts at this time 4 Apply sufficient torque about 50 Ft Lbs to the inner top cap nut to draw the brake drum up on the drum pilot and against the hub and seat the ball seat of the nut into the ball socket of the wheel see figure 41 Inner Cap Mut at 12 oclack position Tightening the Inner Cap Nuts FIGURE 41 5 To properly center the wheel lightly tighten the remaining wheel nuts Verify the drum is in place over the drum pilots 6 Starting with the top nut first and using a staggered pattern torque the inner wheel nuts in stages to 450 500 FteLbs see figure 42 The last nut rotation must be with a calibrated torque device Torquing the Inner Wheel Nuts FIGURE 42 Use the appropriate nuts with the above technique to install the front and outer dual wheels Follow your shop practice to locate the valve stems Consolidated Metco Inc 7 Install the outer wheel and nuts and tighten to 450 500 Ft eLbs see figure 43 The last nut rotation must be with a calibrated torque device Torquing the Outer Wheel Nuts FIGURE 43 8 Inspect the brake and wheel installation by checking the seating of the wheel s and drum at the pilots and by turning the wheel s and check for any irregularity ZN DANGER Excessive or inadequate wheel nut torque can result in a failure of
18. he tool bottoms out the seal is installed correctly 7b Press the Chicago Rawhide Scotseal Plus XL wheel seal evenly into the bore If additional force is needed use a flat plate and a small mallet to install the seal CR Scotseal Plus XL FIGURE 26 Eaton Seal 8 Check to be certain the seal is not cocked and that the seal inner diameter and the inner bearing turn freely Z N CAUTION Failure to lubricate the inner diameter of the seal and the seal journal may result in premature seal failure 9 Lubricate the inner diameter of the seal with a light film of clean wheel end lubricant 11 REASSEMBLY 10 Turn the hub over and place it seal end down For all drive and trailer hubs install the spacer Ifthe spacer has atapered end it should face towards the outboard end ofthe hub see figure 27 Installing the Outer Bearing Cone FIGURE 28 12 Light corrosion fretting that forms on spindles is normal and should be removed with a fine abrasive When the residue is cleaned away the bare spindle is again subject to corrosion and must be covered with a Installing the Spacer REN a film of grease for corrosion protection 11 Lubricate the outer bearing cone with the proper making sure both the bearing journals and the seal wheel hub lubricant and install it into the hub assembly journal are well coated Standard Grade 2 greases work see figure 28 well in normal environments In severe environments a Mo
19. ly grease may provide added protection Failure to apply grease to the bearing journals will result in fretting corrosion which may result in difficulty removing the bearing Consolidated Metco Inc 12 REINSTALLATION INSTALLING THE PRESET WHEEL HUB Never support the hub on the spindle with just the inner bearing and seal This can damage the seal and cause premature failure i e by cocking the seal in the bore 1 For drive hub installation place the hub horizontal and remove the outer cone and spacer Fill the cavity through the end of the hub with the axle flange studs with as much oil as possible If a lubricant fill hole is available lubricant can be installed after assembly Reinstall the spacer and outer cone in the hub see figure 29 Prelubricating the Drive Hub FIGURE 29 2 Mount the hub assembly onto the axle spindle with a smooth firm motion while holding the outer bearing in place Use care to maintain alignment between the bearing cones spacer and spindle and to avoid seal damage see figure 30 ZN CAUTION Once the hub is on the spindle do not remove the outer bearing Removing the outer bearing may cause the seal to become misaligned resulting in premature seal failure Mounting the Assembly FIGURE 30 Consolidated Metco Inc 3 Install the inner spindle nut and torque to 300 Ft Lbs see figure 31 Nez Do not back off the spindle nut Reinstalling the Spindle Nut
20. n extend up to 500 000 miles These assemblies include ConMet precision machined hubs premium oil bath seals specially toleranced roller bearings and unique precision machined bearing spacers This combination eliminates the need to manually adjust wheel end play These components are delivered as a complete package eliminating the potential for premature failures due to improper installation practices see figure 5 Lubricant Fill Plug ABS Ring Optional il Seal Inner Hearing Come Inner Bearing Cup Spacer Sectoned i Uuter Rearing Cone Outer Bearing Cup TN Trailer Hub FIGURE 5 For information on our standard lightweight aluminum or ductile iron hubs for manually adjusted bearings refer to the corresponding service manual see table 1 Contact ConMet at 1 800 547 9473 for other available technical or product information or visit our web site at www conmet com PreSet Hub Assembly 10005642 Service Manual ConMet Aluminum and Iron 10005647 Component Hub Service Manual Corresponding Literature TABLE 1 Consolidated Metco Inc 3 IDENTIFICATION PRESET WHEEL HUB ASSEMBLIES ConMet offers a complete family PreSet Wheel Hub Assemblies for steer drive and trailer axles All ConMet PreSet Wheel Hubs come complete with pre installed bearings cups and cones and oil seals These hubs are unique in that a precision tubular spacer is utilized between the bearings eliminating the need for manual bearing adju
21. n hub remove the bearing cup using a large Inspect the drum pilots wheel pilots and mounting face hammer and a heavy drift along with the appropriate on the hub for damage A damaged drum pilot is usually cup knockout tool as listed in the back of this manual caused by improper drum mounting A damaged wheel see table 7 Take precaution to avoid damaging the pilot could be the result of inadequate wheel nut torque bearing cup bore and shoulder allowing the wheels to slip in service Also inspect the wheels and brake drum for damage 3 Inspect the bearing cup bore for evidence of cup STUD REMOVAL rotation spun cups If noted replace the hub 4 To install a new cup in an aluminum hub it is Observe all warnings and cautions for press operation provided recommended that the hub be heated evenly throughout by the press manufacturer to avoid serious personal injury and in an oven or in boiling water to 175 215 F Cooling the damage to components cup in a freezer will further ease the installation if 1 Place the clean hub in a shop press with the hub desired supported evenly around and adjacent to the stud being VAN CAUTION removed Do not overheat the hub WARNING Failure to adequately support the hub can result in physical injury Remove the aluminum hub from the oven or water and and or damage to the hub carefully drop in the new bearing cup being certain it is fully seated Variations within tolerances of materials
22. out Steer Inner NPO26773 Consolidated Metco Inc 18 SPECIFICATIONS Wheel End Torque Specifications TABLE 8 Always tighten the top nut first If lubricant is used k apply sparingly on threads only Do not lubricate the ann en 450 500 faces of the hub drum wheel or on the ball seats of Wheel Nut the wheel nuts Always tighten the top nut first Apply two drops of oil Hub Pilot between the nut and nut flange and two or three drops to Wheel Nut m on er the outermost 2 or 3 threads of the wheel studs Lightly lubricate the wheel pilots on the hub Drive Studs 3 4 16 40 60 Consult manufacturer s instructions for drive axle shaft Drive Studs 5 8 18 40 60 installation for all drive studs Drive Studs Mini SAE Grade 5 fasteners flat washers onl Oil Fill Plug 1 4 NPT Oil Fill Plug 3 8 NPT Oil Fill Plug 9 16 18 O Ring Style Consolidated Metco Inc 19 ConMet Part No 10005642 Rev B 6 03 Consolidated Metco Inc 13940 N Rivergate Blvd Portland OR 97203 Phone 800 547 9473 Fax 503 240 5488 www conmet com
23. stment see figures 6 9 PreSet Steer Hub FIGURE 6 PreSet Drive Hub FIGURE 7 PreSet TN Trailer Hub FIGURE 8 PreSet TP Trailer Hub FIGURE 9 Consolidated Metco Inc WHEEL MOUNTING SYSTEMS ConMet PreSet Wheel Hubs are available in both hub pilot and ball seat nut configurations Hub Pilot Wheel Mounting The hub pilot wheel mounting system makes use of a single two piece flange nut on each wheel stud for both single and dual wheel applications see figure 10 The hub pilot wheel mounting system is also Known as the Uni Mount 10 10 stud WHD 10 10 stud WHD 8 8 stud and ISO system Single Dual Fass F a i Pa F _ er pop FrP m a T PE apa _ rr ry Pi y er T EE i u n im nm Hub Pilot Mounting Systems FIGURE 10 Ball Seat Wheel Mounting System The ball seat wheel mounting system makes use of the spherical contact area between the nut and wheel to both locate the wheel and hold the wheel tight against the brake drum see figure 11 The ball seat wheel mounting system is also known as the stud piloted ball seat cap nut BCN and double cap nut DCN system Single Ball Seat Mounting Systems FIGURE 11 PERIODIC INSPECTION AND PREVENTIVE MAINTENANCE ConMet requires a visual inspection of the PreSet Hub Assembly every 12 months or 100 000 miles NOTE ConMet requires PreSet wheel hub service at 500 000 mile intervals or 5
24. years whichever comes first In addition to the annual visual inspection you should maintain current shop preventative maintenance and pre trip inspection practices VISUAL INSPECTION OIL LUBRICATED Visually inspect for leakage and oil contamination Leakage Indicators 1 Check to be certain that no oil is present around the hubcap or on the wheel N CAUTION If oil is present investigate the cause and take corrective action 2 Check to be certain that no oil is present on the hub brake hardware or brake shoes If oil is present the seal may be defective improperly installed or worn out Replace the seal by following the instructions as outlined in this manual N CAUTION Do not mix oil types If oil needs to be added make sure you use the same type Oil Contamination Allow any air in the oil to escape prior to inspection Visually inspect the lubricant for discoloration Under normal conditions the oil will darken slightly A white or milky appearance indicates water contamination If the inspection indicates contamination completely service the PreSet Wheel Hub by following the instructions as outlined in this manual Consolidated Metco Inc SEMI FLUID GREASE LUBRICANT Visually inspect for leakage and grease contamination Leakage Indicators 1 Remove ConMet PreSet semi fluid grease hubcap there is no sight window 2 Inspect the outer bearing to make sure sufficient grease is present
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