Cat® Undercarriage
Contents
1. Cat Undercarriage Management Guide e Operating and Maintenance Tips e Track Adjustment Procedures e Hardware Requirements Undercarriage System Management MOUGNO seen 3 Operating and Maintenance Tips 0c e eee e ee eee eee 4 7 Custom Track Service Factors Affecting Wear Operating and Maintenance Checklist Track Adjustment Procedure 0000 ccc ee cece eee eee eens 8 12 Flevated Sprocket Tractors with and without Carrier Rollers Low Sprocket Tractors and Loaders Hydrostatic Loaders Hydraulic Excavators Hardware Requirements for Elevated Sprocket Low Sprocket and Excavator Track 0c eee ee eee ee eeaee 13 15 Track Roller and Idler Caps Sprocket Segment Conventional Shoe and Link Split Master Link SystemOne Shoe and Link SystemOne Shoe and Clamp Masterlink Caterpillar Undercarriage is designed to work and wear as a system to reduce your operating costs You make daily decisions that impact undercarriage wear and costs This guide can help you and your operators understand how undercarriage works and how to reduce wear and save money Although wear can t be halted we are committed to helping you make each undercarriage system last with correct operation and maintenance Your Undercarriage Management Guide is not repair manual You shouldnt try to diagnose undercarriage problems from the pictures and descriptions in this book This g2. D10 1 1 8 650 50 Ib ft 870 70 N m split master links Low Sprocket Track Initial Torque for fastening shoes and split master links Model Bolt Size D4K D4G D4C D3K D3G D3G D3 931 935 9 16 D5K D5G D5C D5 D4 953 943 941 939 5 8 Initial Torque 65 15 Ib ft 90 20 N m 130 30 Ib ft 175 40 N m connection for the master link must be clean and undamaged Remove all paint from points of connection 2 Use 405593 Lubricant or 5P3931 Anti seize Compound on master bolt threads D6 D7 977 973 963 955 3 4 220 40 Ib ft 300 50 N m D8 983 973 7 8 250 50 Ib ft 340 70 N m 3 Put master links together and check D9 1 400 50 Ib ft 540 70 N m Excavator Front Shovel Track Initial Torque for fastening shoes alignment of holes for master bolts Install one master bolt in each link The bolts must turn easily by hand Model Bolt Size Initial Torque in the threads 225 215 213 211 205 5 8 130 30 Ib ft 175 40 N m 235 231 229 225 FB227 3 4 220 40 Ib ft 300 50 N m 4 Remove the bolts Install the master 521 522 TK711 TK721 TK722 TK741 3 4 300 50 Ib ft 400 70 N m track shoe and all tour master bolts a 7 8 250 50 lb ft 340 70 Nem Turn the master bolts by hand 245 ie 4 00 50 Ib ft 540 70 N m 5 Tighten the master bolts to the specified 307 1 2 165 15 Ib ft 220 20 N m initial torque shown in the chart sale eal eee 6 Give each bolt
3. They are designed primarily for use in high impactunderfoot conditions Undercarriage System Management Terrain Most of the time you cant control the terrain you are working in However it is Important to understand how contours and slopes affect undercarriage wear Working uphill shifts the weight and load balance to the rear causing higher wear on rear rollers and increasing forward drive side sprocket and bushing wear Working downhill shifts weight and load balance forward causing a relatively higher wear rate on front track rollers and idlers Working on a side hill shifts the weight and load balance to the downhill side of the machine This increases the wear rate on the components and parts on the sides that are on the upper side of the hill Working on a crown shifts the load to the inboard components Increasing wear on Inner links inner roller idler treads and grouser ends Working in a depression shifts the load to the outboard components increasing wear on outer links outer roller idler treads and grouser ends Factors Affecting Wear Always use the narrowest shoe possible Use narrow shoes which still provide adequate flotation for your application Proper floatation helps to reduce wear by keeping track from being submerged in material but using wider shoes than required by your application can lead to Increased bushing and sprocket wear Turning resistance loads and we
4. 589 6 5 165 D8T D8R 583T R 7XM5094 UP 6YZ KPZ 6 0 152 D8R 7XM1 5093 D8N STC 5TJ 5 6 142 D8 T R SystemOne 6 0 152 D N 578 9TC 5TC 5 6 142 D7R STD XR 5 4 136 D7R LGP 572R 5 4 136 5 D7H STD XR 5 0 126 D7H LGP 5 0 127 DOR STD 2YN1 544 3ZN1 763 6 2 156 8 D6T DER STD 2YN545 amp UP 3ZN764 amp UP AFM AEM 5 8 147 5 DOR XR 6JN1 415 7KN1 450 6 2 156 8 DOR XR 6JN416 amp UP 7KN451 amp UP 5 8 147 5 DOR LGP 8LN1 528 9PN1 1578 6 0 151 8 D6T DER LGP 8LN529 amp UP 9PN1579 amp UP ACJ ADE 5 6 142 5 DOR XL 4MN1 503 5LN1 2765 6 0 153 5 D6T XL XW LG D6R XL 4MN504 amp UP 5LN2766 amp UP 5 7 144 2 DER XW 5 7 144 2 D6H STD XR 6 4 161 8 D6H LGP 527 6 2 156 8 DGH XL 6 0 1535 DEN M XL 4 0 102 4 D6N M LGP 4 3 108 2 D5N M XL 3 6 91 7 D5N M LGP 3 5 88 5 D5H 517 4 4 112 D4H 561H M 3g 100 Track Adjustment Procedures Low Sprocket Tractors 4 On machines with one carrier roller 1 and Loaders per side place a mark on the track roller frame 4 inch or 10 millimeters behind the rear edge of the front idler bearing assembly B On machines with more than one carrier roller per side mark the track 1 Move the machine forward and let It coast to a stop without applying the brakes Then park the machine and turn off the engine Place a tight line over the grouser tips roller frame
5. Then turn each bolt 90 at a time for four 4 turns These turns are to be completed in a clockwise pattern Initial torque draws the parts together tightly The additional turns gives the bolt correct stretch for good retention This ensures that the bolts maximum clamping force is used Undercarriage System Management 3 Tighten the bolts to the specified initial torque shown in the chart below 4 Give each bolt an additional 1 3 turn SystemOne Track Track Size DET DER D6H 953 D C B DEN D6M D5H 953 D C B D6K D5K D5G DSC D5N D4K D4G DAC D3K D3G D3C SystemOne Track Clamp Master Track Size D6T D6R D6H 953 D C B DEN D6M D5H 953 D C B D6K D5K D5G D5C D5N Initial torque draws the parts together tightly An additional 1 3 turn gives the bolt correct stretch for good retention This ensures that the bolts maximum clamping force is used Bolt Size Initial Torque 22 mm 370 50 Ib ft 500 70 N m 20 mm 300 50 Ib ft 400 70 N m 18mm 150 20 Ib ft 200 25 N m 16mm 110 20 Ib ft 145 40 N m 16mm 110 20 Ib ft 145 40 N m Bolt Size Initial Torque 22 mm 300 50 Ib ft 400 70 N m 20 mm 220 50 Ib ft 300 50 N m 18 mm 180 50 Ib ft 250 50 N m 16mm 185 50 Ib ft 250 50 N m Expect More from the Experts When you buy a Cat undercarriage system you get the support of our parts and service representatives who have tools to help you manag
6. an additional 1 2 turn 311 312 313 314 16 mm 130 30 Ib ft 175 40 N m Give a 1 3 turn for D6T DER D6H D7H 315 317 318 319 320 320S 321 322 323 S amp L DSL D8T DSR DEN DUL DIT 324 325 511 TK711 20 mm 300 50 Ib ft 400 70 N m DIR DON D10T D10R DION 589 578 350 q 370 50 Ib ft 500 70 N m 245 235 330 532 541 TK732 22 mm 370 50 Ib ft 500 70 N m 345 551 552 TK751 TK752 24 mm 370 50 Ib ft 500 70 N m 365 27 mm 400 50 Ib ft 540 70 N m 385 5090 30 mm 675 70 Ib ft 990 100 N m 5080 375 27 mm 400 50 Ib ft 540 70 N m 5130 1 3 8 1100 110 Ib ft 1500 150 N m 5110 1 1 8 650 50 Ib ft 870 70 N m SystemOne Shoe and Link The number one cause of shoe loosening is Improperly tightened shoe hardware Use the following procedure to tighten your track bolts 1 Lubricate the bolt threads and bolt washer faces with 5P3931 Anti seize Compound 2 Install Self Locking Track Nuts with the rounded corners against the link SystemOne Shoe and Clamp Masterlink The number one cause of shoe loosening is Improperly tightened shoe hardware Use the following procedure to tighten your track bolts 1 Lubricate the bolt threads and bolt washer faces with 5P3931 Anti seize Compound 2 Install Self Locking Track Nuts with the rounded corners against the link 3 Tighten the bolts to the specified initial torque shown in the chart 4
7. 0 50 Ib ft 870 70 N m D9 D8 983 7 8 250 50 Ib ft 340 70 N m 13 Undercarriage System Management Hardware Requirements 1 Lubricate the bolt threads and bolt washer faces with 5P3931 Anti seize Conventional Shoe and Link 3 Tighten the bolts to the specified initial 14 The number one cause of shoe loosening is Improperly tightened shoe hardware Use the following procedure to tighten your track bolts Elevated Sprocket Track Initial Torque for fastening shoes and split master links Compound 2 Install Self Locking Track Nuts with the rounded corners against the link torque shown in the chart below 4 Give each bolt an additional 1 3 turn Initial torque draws the parts together tightly An additional 1 3 turn gives the bolt correct stretch for good retention This ensures that the bolts maximum clamping force Is used Track Size Bolt Size Initial Torque D5N D5M D5H D4H 5 8 130 30 Ib ft 175 40 N m D7H D6T D6R DEN D6M D6H 527 517 4 50 Ib ft 400 70 N _D6T D6R D6N D6M D6H 527 5 3 300 50 Ib ft 400 70 N m Split Master Link D7R D7H 7 8 250 50 Ib ft 340 70 N m DET D8R D8N D8L D8T SystemOne 7 8 480 50 Ib ft 650 70 N m The importance of correctly assembling DOT DOR DON DAL lg 650 50 Ib ft 870 70 N m and torquing cannot be overemphasized DSH 1 300 50 Ib ft 400 70 N m Follow these steps for both new and used D10T DIOR D10N
8. 5 inch or 13 millimeters 2 from the sprocket to the front idler behind the rear edge of the assembly Track sag should be about 2 inches 5 Open the hydraulic relief valve or 50 millimeters If your track requires adjustment complete the following steps 6 Place a track pin or drawbar pin between the sprocket teeth near the link assembly 2 Connect the grease gun to the fitting l 3 7 Travel in reverse until the idler backs at the track adjustment mechanism A located under the inspection up at least 5 inch or 13 millimeters plate B is the front idler bearing Move the machine forward until the Fo pin is free of the track then remove the pin 3 Add grease to extend the hydraulic track adjuster until the idler is at maximum forward position The relief valve should remain closed 8 Close the hydraulic relief valve 4 Using the grease gun extend the hydraulic track adjuster until the rear edge of the idler bearing assembly aligns with the mark After adding grease the track should on the roller frame be almost straight between the front carrier roller and idler The resulting sag should be about 2 5 inches or 50 millimeters Operate the machine in forward and reverse then reinspect track adjustment 5 Open the relief valve and let the idler Hydrostatic Loaders drift back until the second mark is 1 Move the machine forward and let it slowly come to a stop Then park t
9. N 47 51 5 5 120 130 140 D8T D8R DEN 578 583T R 41 45 49 105 115 125 D8L bl 55 59 130 140 150 D7R D7H 572R 41 45 49 105 115 15 DGT DER D6H 527 41 45 49 105 115 15 D5H D4H 517 561H 561M 39 39 4 3 90 100 110 Chart 2 Proper Track Sag Machines with carrier rollers Inches Millimeters Model Min Target Max Min Target Max D11T D11R D11N D10 2 6 3 0 3 4 65 75 85 D10T DIOR DION D9L 589 24 28 32 60 70 80 D9T DIR DIN 2 2 2 6 3 0 55 65 75 D8T D8R DEN DEL 578 583T R 2 2 2 6 3 0 D5 65 75 D7R D7H 572R 2 2 2 6 3 0 55 65 75 DGT D6R D6H 527 18 22 2 6 45 55 65 DEN DEM DSH 517 io 22 2 6 45 55 65 D5N D5M D4H 561H 561M 10 14 1 8 75 35 45 Chart 3 Proper Track Sag SystemOne Machines with carrier rollers Inches Millimeters Model Min Target Max Min Target Max D8T DER 2 2 26 3 4 45 65 75 D6T R H D6N M D5H 16 18 2 0 40 45 50 D5N M D4H 10 14 1 8 5 39 45 Machines without carrier rollers D8T R 3 1 45 4 9 80 115 125 D6T R H 41 45 4 9 105 115 125 If excessive track jumping occurs run the track adjustment to the minimum side of the track sag range Model Serial Number Range Inches Millimeters D11T D11R AAF 7PZ 9TRO0202 UP 9XR00154 UP 7 8 198 D11R D11N 7 0 178 D10T RJG D10R AKT 3KR01331 UP D10 73 186 D10N 2YD1 515 5 8 148 D10R 3KR1 1330 DION 2YD516 UP 6 8 173 DIT RJS DOR ACL ABK 8BL1422 UP 71L1212 UP 7 0 178 DOR 8BL1 1421 7TL1 1211 DON 5 9 150 DOL D8L
10. N m DST DIR DON DET DER DEN 1 1 8 1185 150 Ib ft 1600 200 N m D10T D10R D10N D10 1 1 4 1700 220 Ib ft 2300 300 N m D11T D11R D11N 1 3 8 2220 260 Ib ft 3000 350 N m Sprocket Segment 1 Lubricate the bolt threads and the 3 Tighten each nut an additional 1 3 turn washer face of the nut with 5P3931 The principal cause of segment loosening Anti seize Compound and subsequent loss and or damage to other parts is incorrect segment hardware installation 2 Tighten all nuts on any one segment to the specified initial torque shown in the chart This draws the mating parts To install segment hardware together tightly Elevated Sprocket Sprocket Segment Hardware Initial Torque This stretches the bolt properly for good retention Low Sprocket Sprocket Segment Hardware Initial Torque Model Bolt Size Initial Torque Model Bolt Size Initial Torque D6T D6R DEN D6M DSN DSM D4K D3K D4G DAC D3G D5H D4H 5 8 130 30 Ib ft 175 40 N m D3C 935 1 2 50 8 Ib ft 70 10 N m D8T D8R DEN DBL D7R 3 4 220 40 Ib ft 300 50 N m 953C M16 75 15 Ib ft 100 20 N m DL 7 8 650 50 Ib ft 870 70 N m D6K D5K D6 D5G DSC D5 D9T DIR DIN 7 8 480 50 Ib ft 650 70 N m 973 963 955 953B 943 939 5 8 130 30 Ib ft 175 40 N m D101 D10R D10N D10 1 650 50 Ib ft 870 70 N m D7 977 973 3 4 220 40 Ib ft 300 50 N m D11T D11R D11N 1 1 8 65
11. ake daily visual inspections of the equipment Check for loose bolts leaking seals and abnormal wear Keep the undercarriage clean of mud and debris so rollers can turn properly Undercarriage System Management Track Adjustment Procedures Incorrectly adjusted track can cost you money both in accelerated undercarriage wear and downtime If the track is too tight damaging non productive loads are placed on the undercarriage and its manual components Tight track accelerates track wear and reduces tractor drawbar horsepower Adjustment procedures take only a few minutes and require only one person When adjusting your track on any Caterpillar machine 1 Always adjust the track in the working area 2 Do not try to squeeze any packing material from in between the track 3 Never loosen the relief valve more than one turn Grease and oil are under extreme pressure and can penetrate the body causing serious injury Elevated Sprocket Tractors 1 Move the tractor forward and let it coast to a stop without applying the brakes Make sure slack is between the sprocket and front idler Then park the machine and turn off the engine Place a tight line over the grouser tips from the sprocket to the front idler 2 For machines without carrier rollers measure the distance A from the line to the grouser tip at the lowest point of sag Refer to Chart 1 to determine the correct sag for each model F
12. e your undercarriage system Custom Track Service CTS is the best way to control costs and downtime While there is no substitute for CTS you play an equally important role in managing your undercarriage system Understanding how your undercarriage works and wears Is critical With correct operation and maintenance you can reduce wear and save money Together we form a working relationship to lower costs PEGP5027 06 www cat com 2011 Caterpillar All Rights Reserved Printed in USA CAT CATERPILLAR their respective logos SystemOne Caterpillar Yellow and the POWER EDGE trade dress as well as corporate and product identity used herein are trademarks of Caterpillar and may not be used without permission
13. he machine and turn off the engine Place a tight line over the grouser tips from the sprocket to the front idler Measure the distance from the line to the grouser tips at the lowest point of sag Proper track tension is about 2 inches or 50 millimeters If the track requires adjustment remove the cover for the adjusting mechanism Connect the grease gun to the fitting Add grease to move the idler forward until the track is tight Using a straight edge make a mark on the rod even with the recoil housing A Place a second mark on the rod 4 inch or 10 millimeter from the first mark in the direction of the idler On the 973 place the mark on the rod 5 inch or 13 millimeters in the direction of the idler Hi behind the recoil housing Then close the relief valve Using a grease gun move the idler forward until the second mark is even with the recoil housing The resulting sag should be about 2 inches or 50 millimeters Operate the machine in forward and reverse then reinspect the track AS wear increases on the track link and rolling components the distance between the piston B and recoil housing C will increase Consult a Caterpillar Service Manual or contact us when the distance exceeds e 2 inches or 50 millimeters on 943 and 953 Track Loaders e 2 36 inches or 60 millimeters on 963 and 973 Track Loaders Track Adjustment Proced
14. ight Increase with wider shoes especially in rough underfoot conditions This added stress causes faster wear rates for bushings and sprockets e Increased link track roller idler tread and flange wear Using shoes that are too wide increases the interference between these surfaces causing them to wear faster Operating and Maintenance Tips MN e Loosening of pins bushings Control the operation of your machine and shoe hardware Leverage forces increase with wider shoes In high impact or especially rough terrain greater leverage forces may lead to premature loosening of bolted and pressed fit components One of the best ways to protect your machine against unnecessary wear IS to make sure It is used properly All of the following cause additional wear on the components of your undercarriage e Slipping the track reduces production and increases wear on all undercarriage components especially on grouser bars Reduction of track joint life Bending forces are exaggerated when using wide shoes in high impact applications causing pressed track joints to open up This may lead to loss of lubricant internal wear and replacement or reconditioning of track joints sooner than expected e Avoid unnecessary reverse operations Non productive reverse operation compounds bushing and sprocket wear If the machine must be taxied from one location to another reverse operation will cause more bushing wear rega
15. k roller and idler accelerated wear To a lesser extent tight track increases loads between the links rollers and idlers This particularly accelerates wear on the Idlers For information on how to adjust your track see Track Adjustment Procedures Undercarriage repair options Maximize the life of your undercarriage and reduce your cost per hour by taking advantage of these undercarriage repair options e Wet bushing turn e Roller reshelling e Roller swapping e Idler resurfacing e Track shoe regrousering Operating Checklist 2 Minimize high operating speeds in non Always use the narrowest shoe possible which still allovvs adequate flotation productive situations especially in reverse Alternate turning direction since turning only in one direction wears out one side of the machine faster than the other Rotate the track from side to side if you or your operators tend to work on one side of the machine more than the other Do not spin the tracks since it reduces production while increasing wear on all undercarriage components especially on grouser bars Maintenance Checklist Ji Adjust the track for correct tension Call your parts and service representative for expert advice and service Always adjust track in its working environment Correct track adjustment is critical Tighten the track hardware correctly using Caterpillar torque turn method M
16. ogie bore 2 Align the shaft and cap dowel holes to ensure proper bearing lubrication and shaft movement 3 Completely tighten the bolt bolts on the side having metal contact To install roller and idler hardware Elevated Sprocket Roller Hardware Torque Requirements 4 Completely tighten the bolt on the side that has a gap 5 Tighten the bolts to the specified torque shown in the charts below Elevated Sprocket Idler Hardware Initial Torque Requirements Model Bolt Size Torque Model Bolt Size Torque D4H 943 with caps 5 8 200 20 Ib ft 270 25 N m D5H D4H 5 8 200 30 Ib ft 270 40 N m D5H D4H 953 5 8 200 30 Ib ft 270 40 N m D5N DSM M16 200 30 Ib ft 270 40 N m D5N D5M DEN DEM 953 M16 200 30 Ib ft 270 40 N m DEN DEM M16 220 30 Ib ft 300 40 N m D6H 963 3 4 320 45 Ib ft 430 60 N m DET D6R M20 430 60 Ib ft 570 80 N m D6T DER 963 M20 340 50 Ib ft 530 70 N m D6H 3 4 360 45 Ib ft 475 60 N m D7R D7H DET DSR DEN D7R D7H 7 8 515 65 Ib ft 700 90 N m DEL DAT DOR DIN 7 8 550 50 Ib ft 750 70 N m DEL 1 850 75 Ib ft 1125 100 N m D9L D107 D10R D10N 1 850 75 Ib ft 1125 100 N m DOL 1 1 8 1365 105 Ib ft 1850 135 N m D10 1 1 8 1015 105 Ib ft 1350 135 N m DSL 1 1 4 1650 105 Ib ft 2200 200 N m DITT D11R D11N 1 1 4 1650 150 Ib ft 2200 200
17. or machines with carrier rollers measure the distance from the line to the grouser tips in two places at the lowest point of sag between the front idler and carrier roller A and between the carrier roller and sprocket B Then average the two measurements Refer to Chart 2 to determine the correct sag for your model For SystemOne machines with or without carrier rollers refer to chart 3 3 If your track requires adjustment locate the hydraulic fill and relief valve in the rear roller frame and remove the Inspection cover Using a manual grease gun add grease at the adjustment mechanism to tighten the track To loosen the track open the relief valve and allow grease to escape Then close the relief valve 4 Operate the machine in forward and reverse then re measure track tension To avoid damage to internal roller frame components do not allow the length of the exposed tube B to exceed the dimensions listed in Chart 4 1 Chart 1 Chart 4 Track Roller Frame Extension Specifications Machines with and without carrier rollers Proper Track Sag Machines without carrier rollers Inches Millimeters Model Min Target Max Min Target Max D111 D11R D11N D10 6 1 6 5 6 9 155 165 1 5 D101 D10R DION DOL 589 5 7 6 1 6 5 145 155 165 D9T DIR DI
18. rain Dozing and push loading usually shift the machine weight toward the front causing faster wear rates on the front rollers and idlers Ripping and drawbar shift the weight toward the back increasing wear on the rear rollers idlers and sprockets Loading as with a carry dozer shifts the weight from the rear to the front of the machine as it changes from digging to carrying Wear will occur more on the front and rear rollers than the center ones Excavating shifts the weight to the side where the digging is being done Spreading dumped material tends to create more wear on the undercarriage side where the operator hits the pile due to the material entering the undercarriage from the side Packing During operation materials can stick to and pack between mating components such as rollers links sprocket teeth and bushings Packing prevents parts from engaging correctly This can cause higher loads and increased wear rates Packing is Inevitable in many applications however there are things you can do to reduce the effects of packing e Use center punched shoes in certain situations to help relieve extrudable materials such as wet sand clay or snow e Clean out your undercarriage as often as possible Garbage twigs stones and demolition debris cannot be extruded through the center punched shoes e Use roller guards only when necessary because they may trap debris and increase the effects of packing
19. rdless of speed e Shoe breakage Severe turning resistance in extreme conditions and bending forces may cause wide shoes to break e Operating the machine at a non productive high speed may cause link tractor roller and idler tread wear Wear increases proportionally to speed Your parts and service representative can help determine the best shoe width for your underfoot conditions e Always turning the machine in one direction may cause link side rail track roller flange and idler flange wear Wear increases on one side of the machine because of the greater horsepower and distance traveled Undercarriage System Management Be sure your track is always properly adjusted Every application affects undercarriage wear differently and requires proper track adjustment Adjust your track in the underfoot conditions in which your machine is working For example if track that is correctly adjusted for a non packing application is put into a packing situation packing materials will increase track tension making the track adjustment too tight Added track tension increases both the load and the wear on all mating components of your undercarriage Improperly adjusted track can result in problems and wear on other components such as Bushing and sprocket accelerated wear Tight track increases loads which advances wear Wear occurs as the bushing rotates and or slides in the sprocket e Link trac
20. uide is not a substitute for the advice and recommendations of your parts and service representative min i in Fin ii 06 a a r o am gt Custom Track Service Your undercarriage Is an expensive investment It accounts for as much as 20 percent of the price of a new track type machine Undercarriage can represent as much as 50 percent of machine maintenance costs Our goal is to help keep your undercarriage operating cost per hour or per mile km as low as possible That s why we developed Custom Track Service CTS Our parts and service representatives e Have the best training and tools to manage your undercarriage system e Regularly inspect and measure wear on your undercarriage Prepare reports with maintenance and repair alternatives so you can make informed decisions to reach the lowest possible cost per hour or per mile km of operation While there is no substitute for Custom Track Service you also play an important role in maintaining undercarriage life The following pages describe conditions and situations that affect undercarriage and highlight ways you can help slow or reduce wear Operating and Maintenance Tips KLP Aa Ar Jo MG vo ST MR a Factors Affecting Wear Application The type of job the machine is doing and the type of materials it is working in can affect the rate of wear on different components The following situations all assume level ter
21. ures Hydraulic Excavators Refer to the chart below to determine 1 the correct sag for each model 1 Operate the machine in the direction of the idlers 4 If the track is too tight loosen it by opening the relief valve and allowing 2 Stop with one track pin directly over the grease to escape front carrier roller Park the machine and turn off the engine 5 Tighten track by adding grease at the hydraulic fill and relief valve Travel in forward and reverse to equalize tension throughout the track Then reinspect adjustment 3 Place a tight line or straight edge on top of the grousers between the front carrier roller and idler Measure the distance from the straight edge to the grouser tip at the lowest point of sag midway between the front carrier roller and idler Proper Track Sag Inches Millimeters Model Min Target Max Min Target Max All 200 Family series excavators 1 0 13 15 25 0 32 5 40 0 All E Family series excavators 1 6 1 85 2 1 40 0 47 5 55 0 All 300 Family series excavators 1 6 1 85 2 1 40 0 47 5 55 0 All 500 and TK Family series excavators 1 6 1 85 2 1 40 0 47 5 55 0 5080 5090B 5130 5130B 5110B 1 6 1 85 2 1 40 0 41 5 59 0 Hardware Requirements 1 Lubricate the bolt threads with 5P3931 Anti seize Compound Track Roller amp Idler Caps Inadequate clamping of the track roller and idler caps can result in broken retaining bolts and damage to the frame or b
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