- Caterpillar Products
- Machines with Positive Pin Retention (PPR) Track
- Machines with Sleeve Bearing Track
- Pipelayer
- PL72 (S/N: P721-UP; P731-UP)
- PL83 (S/N: CB21-UP; DLW1-UP)
- PL87 (S/N: TEC1-UP; ZAC1-UP)
- PL83 (S/N: CB21-UP; DLW1-UP)
Introduction
Revision | Summary of Changes in SEBF8584 |
09 | Added serial number prefixes for New Product Introduction. |
08 | Added serial number prefixes for New Product Introduction.
Added model PL72 to tables. Updated introduction section. |
07 | Added serial number prefixes for New Product Introduction. |
06 | Added serial number prefixes for New Product Introduction. Updated safety section. |
© 2018 Caterpillar All Rights Reserved. This guideline is for the use of Caterpillar dealers only. Unauthorized use of this document or the proprietary processes therein without permission may be violation of intellectual property law. Information contained in this document is considered Caterpillar: Confidential Yellow.
This Undercarriage Reconditioning Bulletin contains the necessary information to allow a dealer to establish a parts reusability program. Reuse and salvage information enables Caterpillar dealers and customers to benefit from cost reductions. Every effort has been made to provide the most current information that is known to Caterpillar. Continuing improvement and advancement of product design might have caused changes to your product which are not included in this publication. This Undercarriage Reconditioning Bulletin must be used with the latest technical information that is available from Caterpillar.
For questions when using this document, work with your Dealer Technical Communicator (TC).
To report suspected errors, inaccuracies, or suggestions regarding this document, submit a form for feedback in the Service Information System (SIS Web) interface.
Summary
The following information is given to provide Disassembly and Assembly procedures for track rollers with conventional Duo-Cone seals. The information in this bulletin should serve as an aid in determining whether a track roller with conventional Duo-Cone seals can be reconditioned. During rebuild procedures, always correct any conditions which may have caused the original failure or wear and never install a component that falls within the “Do not use again” criteria.
References
Reference: Undercarriage Reconditioning Bulletin, SEBF8511, "Reusability Recommendations for Duo-Cone Seals"
Reference: Undercarriage Reconditioning Bulletin, SEHS8515, "Repair Procedure for Retainer Assemblies on Track Idlers and Rollers"
Reference: Undercarriage Reconditioning Bulletin, SEBF8574, "Track Roller Oil Fill Volume"
Reference: Special Instruction, SEHS8364, "Assembly and Installation of Conventional Duo-Cone Seals"
Reference: Special Instruction, SEHS8484, "Tool and Specification Chart for Conventional Duo-Cone Seal Gps"
Reference: Undercarriage Reconditioning Bulletin, SEBF8594, "Nitrogen Pressure Test Unit"
Safety
Illustration 1 | g02139237 |
Most accidents that involve product operation, maintenance, and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs. A person must be alert to potential hazards. This person should also have the necessary training, skills, and tools to perform these functions properly.
This bulletin may contain hazardous steps. Hazardous steps will be identified by warning symbols like the ones below.
Warning messages identify a specific, imminent, latent, hazard that has a reasonable probability of resulting in personal injury or death if the warning is ignored.
Do not attempt to disassemble or assemble this machine until you read and understand the disassembly and assembly instructions. Improper disassembly and assembly procedures could result in injury or death. |
Inspect all threaded components before use. Damaged threads may fail under hydraulic pressure. Broken threads may release flying objects that are propelled with great force. Personal injury or death can occur if struck by flying objects. |
Do not stand near the hydraulic press while the press is in operation. A component that slips or breaks under pressure may fly into the air with great force. Personal injury or death can occur if struck by flying objects. |
Canceled Part Numbers and Replaced Part Numbers
This document may not include all canceled part numbers and replaced part numbers. Use NPR on SIS for information about canceled part numbers and replaced part numbers. NPR will provide the current part numbers for replaced parts.
Tooling and Equipment
Required Tools | |
---|---|
Duo-Cone Seal Installer | |
Model Number | Part Number |
D11N
D11R D11T |
|
D10N
D10R D10T D9L |
|
D9N
D9R D9T D8L D8N D8R D8T PL72 PL83 PL87 587T 587R 583X 583T 583R 578 |
|
Seal Height Tooling | |
D11N
D11R D11T D10N D10R D10T D9L D9N D9R D9T D8L D8N D8R D8T PL72 PL83 PL87 587T 587R 583X 583T 583R 578 |
|
Miscellaneous Tooling | |
Part Description | Part Number |
Installer Tool | |
Stopper Installation Tool Group | |
Copper-based Anti-Seize Lubricant | Loctite® C5-A® |
NOTICE |
---|
Personal injury or death can result from improper assembly and disassembly procedures. Do not attempt any assembly or disassembly until you have read and understand the assembly and disassembly instructions. Make sure to wear all necessary protective equipment. |
Disassembly
- Remove the plug and stopper to drain the oil.
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Illustration 3 g02403417 Loosen retaining bolts. - Remove the six retaining bolts on each retainer assembly.
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Illustration 4 g02403418 Place roller in press. - Use a hoist to place the track roller in the roller press.
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Illustration 5 g02403419 Remove collar assemblies. - Press the shaft in one direction to remove the first end collar assembly. Rotate the roller 180 degrees, and press the shaft from the other direction to remove the other end collar assembly.
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Illustration 6 g02403420 Remove retainer assemblies. - Remove retainer assemblies, including the thrust washers, from each end of the track roller.
Note: Refer to Undercarriage Reconditioning Bulletin, SEHS8515, "Repair Procedure for Retainer Assemblies on Track Idlers and Rollers" for the salvage procedures on retainers with damaged thrust washers.
Show/hide tableTable 3 Specifications for the End Collar Sales Model Part Number of the End Collar Inner Diameter
(A)D11N
D11R
D11T184-2607 74.4 ± 0.02 mm (2.92 ± 0.001 inch) D10N
D10R
D10T107-3947 68.4 ± 0.02 mm (2.69 ± 0.001 inch) D9N
D9R
D9T
D8L
D8N
D8R
D8T
PL83
PL87
578
583R
583T
587R
587T107-3945 58.4 ± 0.02 mm (2.29 ± 0.001 inch) PL72 471-8713 63.3 ± 0.02 mm (2.49 ± 0.001 inch) Show/hide tableTable 4 Specifications for the Shaft Sales Model Part Number of the Shaft Diameter
(B)D11N
D11R
D11T155-2048 74.5 ± 0.02 mm (2.93 ± 0.001 inch) D10N
D10R
D10T154-3306 68.5 ± 0.02 mm (2.69 ± 0.001 inch) D9N
D9R
D9T104-3494 58.5 ± 0.02 mm (2.30 ± 0.001 inch) PL72 471-8713 63.3 ± 0.02 mm (2.49 ± 0.001 inch) D8L
D8N
D8R
D8T
PL83
PL87
578
583R
583T
587R
587T107-8084 58.5 ± 0.02 mm (2.30 ± 0.001 inch) PL72 471-8577 63.5 ± 0.05 mm (2.50 ± 0.002 inch) Show/hide tableIllustration 7 g02403421 Measure collar inside diameter.
(A) Collar diameterShow/hide tableIllustration 8 g02403422 Measure shaft mounting diameter.
(B) Shaft mounting diameter. - Measure the inside collar diameter (A) and shaft mounting diameter (B) using a micrometer. Compare the measurements to the specifications in Table 3 and Table 4. Do not use the component again, if the measurements are not within specifications. Replace the component.
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Illustration 9 g02403423 Remove o-ring from each retainer assembly. - Remove the large diameter o-ring seals from each retainer assembly.
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Illustration 10 g02403424 Remove o-ring from collar assembly. - Remove the rubber o-rings from the end collar assembly.
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Illustration 11 g02403425 Remove retainer seals. Show/hide tableIllustration 12 g02403426 Remove collar seals. - Remove the Duo-Cone seals from the retainer and end collar assemblies. Inspect each set of seals side by side for reusability.
Note: If the seals are reusable, keep seals in matching pairs. Refer to Undercarriage Reconditioning Bulletin, SEBF8511, "Reusability Recommendations for Duo-Cone Seals" for proper reusability information.
Show/hide tableTable 5 Shaft / Bearing Clearance Sales Model Track Roller Group Clearance
(min/max)D11N
D11R
D11T184-6306 (DF)184-6305 (SF)200-5701 (SF High Abrasion)0.43 mm (0.017 inch)
to
0.57 mm (0.022 inch) D10N
D10R
D10T309-7678 (DF)309-7679 (SF)0.43 mm (0.017 inch)
to
0.57 mm (0.022 inch) D9N
D9R
D9T196-9954 (DF)196-9955 (SF)0.43 mm (0.017 inch)
to
0.57 mm (0.022 inch) D8L
D8N
D8R
D8T
PL83
PL87
578
583R
583T
587R
587T246-0779 (DF)246-0775 (SF)278-9539 (SF Arctic)278-9538 (SF High Heat)0.43 mm (0.017 inch)
to
0.57 mm (0.022 inch) PL72 471-8572 (DF)0.68 mm (0.027 inch)
to
0.84 mm (0.033 inch) Show/hide tableIllustration 13 g02403427 Measure shaft-to-bearing clearance. - Measure the shaft-to-bearing clearance using a feeler gauge. The clearance must fall within the specifications given in Table 5.
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Table 6 Shaft Outside Diameter Specifications Sales Model Part Number of the Shaft Diameter D11N
D11R
D11T155-2048 136.28 ± 0.03 mm (5.365 ± 0.001 inch) D10N
D10R
D10T154-3306 126.75 ± 0.03 mm (4.990 ± 0.001inch) D9N
D9R
D9T104-3494 114.05 ± 0.03 mm (4.490 ± 0.001 inch) D8L
D8N
D8R
D8T
PL83
PL87
578
583R
583T
587R
587T107-8084 114.05 ± 0.03 mm (4.490 ± 0.001 inch) PL72 471-8577 107.17 +1.50/-0.25 mm (4.21928 +0.06/-0.01 inch) Note: Table 6 includes the shaft outside diameter specifications.
Show/hide tableIllustration 14 g02403428 Remove the shaft. - Partially slide the shaft out of the track roller. If necessary, attach a hoist to help remove the shaft the rest of the way.
Illustration 2 | g02403416 |
Remove plug and stopper. |
Assembly
NOTICE |
---|
It is important that the correct assembly and installation procedures are followed when using Duo-Cone seals. Many failures are the direct result of mistakes made during assembly and installation of the seals |
- Wash and remove all debris from the track roller and all the components.
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Illustration 15 g02403429 Clean components. - Use alcohol or other approved cleaning agents to clean the roller components. Dry with a lint free cloth.
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Illustration 16 g02403430 Install o-rings into retainers. Show/hide tableIllustration 17 g02403431 Install o-rings into end collars. - Use Loctite® C5-A® Copper-based Anti-Seize Lubricant to install new o-rings into the retainer and collar grooves.
Note: Always use new rubber components.
Show/hide tableIllustration 18 g02403432 Inspect seals for reusability. - Inspect seals for reusability.
Note: Refer to Undercarriage Reconditioning Bulletin, SEBF8511, "Reusability Recommendations for Duo-Cone Seals" for reusability guidelines for Duo-Cone seals.
Show/hide tableNOTICE Be sure that the toric ring is properly positioned against the retaining lip around the entire circumference of the seal ring. Also verify the toric position for new Duo-Cone seals. Failure to do so may result in a failure of the roller.
- If the Duo-Cone seals are being reused, replace the toric rings.
Note: The toric ring must not be twisted on the seal ring.
Note: Refer to Special Instruction, SEHS8364, "Assembly and Installation of Conventional Duo-Cone Seals" for proper assembly procedures for conventional Duo-Cone seals. Refer to Table 2 for proper seal installation tooling.
Show/hide tableIllustration 19 g02403433 Lubricate lower half of toric ring with isopropyl alcohol. - Lightly dampen the lower half of the rubber toric with isopropyl alcohol.
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Illustration 20 g02403434 Install seals into end collars. - Once the toric is lubricated, use a sudden, even, perpendicular force on the installation tool to install the Duo-Cone seals into the end collars.
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Illustration 21 g02403435 Install seals into retainers. - Once the toric is lubricated, use a sudden, even, perpendicular force on the installation tool to install the Duo-Cone seals into the retainers.
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Illustration 22 g02403436 Check retainer seal height. Show/hide tableIllustration 23 g02403437 Check collar seal height. - Check the assembled seal height in the collar and retainer at four locations 90 degrees apart. The difference in height must not exceed
1.0 mm (0.04 inch) . Refer to Table 2 for proper seal height tooling.Note: If the seal height specification is not met, the Duo-Cone seals must be removed and reinstalled.
Show/hide tableIllustration 24 g02403438 Install shaft. Show/hide tableNOTICE The shaft may scrape bronze particles from the bearing, the bronze particles will cause a failure in the rollers.
- Carefully install the shaft into the track roller.
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Illustration 25 g02403439 Install thrust washers. - Install the thrust washers on both ends of the shaft.
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Illustration 26 g02403440 Slide on the retainer. - Slide the retainer assembly over the shaft and carefully move the retainer to the final position.
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Illustration 27 g02403441 Tighten retainer bolts. - Tighten the retainer bolts.
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Table 7 Torque for Retaining Bolts Model Dynamic Assembly Torque Static Inspection Torque D11N
D11R
D11T270 ± 40 N·m (199 ± 30 lb ft) 230 N·m (170 lb ft) D10N
D10R
D10T
D9N
D9R
D9T
D8L
D8N
D8R
D8T
PL83
PL87
578
583R
583T
587R
587T135 ± 20 N·m (100 ± 15 lb ft) 115 N·m (85 lb ft) Show/hide tableIllustration 28 g02403442 Torque bolts to proper specifications. - Torque bolts to the proper specifications. Refer to Table 7 for proper retaining bolt torque specifications.
Note: The static inspection torque valves listed in Table 7 are minimum requirements. Static torque values, however, must not exceed maximum dynamic assembly torque limits. Check the static torque specification using a torque wrench. The retaining bolt must not move in the tightening direction when the static torque value specified in Table 7 is applied.
Show/hide tableIllustration 29 g02403443 Wipe entire retainer seal face. Show/hide tableNOTICE Failure to remove debris from seal faces will cause a failure.
Show/hide tableIllustration 30 g02403444 Wipe entire collar seal face. - Wipe the entire Duo-Cone seal ring faces in the retainers and end collars with a clean, dry lint free cloth.
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Illustration 31 g02403445 Apply oil to the entire seal face. Show/hide tableNOTICE Do not get oil on the rubber toric rings. Possible failure could result.
- Apply a thin film of oil to the entire Duo-Cone seal face using a horse hair brush.
Note: To reduce risk of introducing airborne contaminants to the face of the Duo-Cone seal ring, minimize the time between seal ring oil application and assembly of the collar to the retainer assembly.
Show/hide tableIllustration 32 g02403446 Place end collar against retainer. - Position the end collar on the shaft.
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Table 8 End Collar Drivers Model Number Driver Part Number D11N
D11R
D11T170-5404 D10N
D10R
D10T170-5408 D9N
D9R
D9T170-5410 D8L
D8N
D8R
D8T
PL83
PL87
PL72
578
583R
583T
587R
587T170-5407 Show/hide tableIllustration 33 g02403447 Press end collar into place. - Slowly move the collar assembly against the retainer assembly refer to Illustration 33. Use a hydraulic press to press the collar into it's final position. Refer to Table 8 for proper end collar tooling.
- Repeat Step 18 for the other collar.
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Table 9 Spin Socket Tooling Tooling Part Number Model Usage D11N
D11R
D11T
D10N
D10R
D10T1U-9398 D9N
D9R
D9T
D8L
D8N
D8R
D8T
PL83
PL87
PL72
578
583R
583T
587R
587TFT-1910 Show/hide tableIllustration 34 g02403448 Spin the shaft. - Select the correct spin socket from Table 9 and spin the shaft 20 revolutions in each direction at a maximum of 100 rpm.
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Table 10 End play Tolerances Model Tolerance
(min/max)D11N
D11R
D11T
D10N
D10R
D10T
D9N
D9R
D9T
D8L
D8N
D8R
D8T
PL83
PL87
578
583R
583T
587R
587T0.26 to 1.26 mm (0.010 to 0.050 inch) PL72 0.19 to 1.27 mm (0.007 to 0.050 inch)
1.27 mm (0.05000 inch) - Check the end play.
Note: If the end play does not fall within the tolerance given in Table 10, the roller must be disassembled to determine why the tolerance specification is not met.
Show/hide tableIllustration 35 g02403449 Lubricate and install stopper. - Lubricate the stopper with a lightweight oil and install in the end of the shaft. The stopper must be installed
7.0 to 15.0 mm (0.28 to 0.59 inch) below the surface of the shaft.Show/hide tableNOTICE Do not allow air to enter in a surge, and do not use pressure in excess of
138 kPa (20 psi) , excess pressure may damage the seals.Show/hide tableIllustration 36 g02902616 170-5664 Test and Fill Cart GpShow/hide tableIllustration 37 g02902598 FT-2724 Pressure Gauge Tool Gp - Use 170-5664 Test and Fill Cart Gp to evaluate and fill the idler. If 170-5664 Test and Fill Cart Gp is not available. Use FT-2724 Pressure Gauge Tool Gp to perform a pressure test on the idler.
Note: Refer to Undercarriage Reconditioning Bulletin, SEBF8594, "Nitrogen Pressure Test Unit" for proper pressure test procedures.
Show/hide tableTable 11 Oil Fill Volumes Model Assembly Oil Volume (ml) Shaft Part Number D11N
D11R
D11T1850 ± 50 155-2048 D10N
D10R
D10T1300 ± 30 154-3306 D9N
D9R
D9T850 ± 20 104-3494 D8L
D8N
D8R
D8T
PL83
PL87
578
583R
583T
587R
587T500 ± 15 107-8084 PL72 290 ± 15 471-8577 - Add the correct quantity of oil into the roller.
Note: Refer to Undercarriage Reconditioning Bulletin, SEBF8574, "Track Roller Oil Fill Volume" for proper fill volumes and oil types. Also refer to Table 11 for oil fill volumes.
Show/hide tableTable 12 Plug Depth Specifications Model Usage Plug Height Above Stopper Surface D11N
D11R
D11T
D10N
D10R
D10T
D9N
D9R
D9T
D8L
D8N
D8R
D8T
PL83
PL87
PL72
578
583R
583T
587R
587T0.0 to 5.0 mm (0.00 to 0.20 inch) Show/hide tableIllustration 38 g02403451 Insert plug into stopper. - Use the 5P-7419 Installer Tool to insert the plug into the stopper to proper depth. Refer to Table 12 for proper plug depth specifications.
Note: The plug must not be recessed below the stopper surface after assembly.
Show/hide tableIllustration 39 g02403452 Tap end of roller shaft to determine if roller contains oil. - Tap the end of the roller shaft to determine if the roller has oil inside. If there is a dull thud, the roller contains oil. If there is a ringing noise, the roller is empty.