Caterpillar Cat D8R TRACK-TYPE TRACTOR Dozer Bulldozer (Prefix 7XM) Service Repair Manual (7XM00001 and up).pdf

Service Repair Manual
Models
D8R TRACK-TYPE TRACTOR
Dozer Bulldozer

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Product: TRACK-TYPE TRACTOR
Model: D8R TRACK-TYPE TRACTOR 7XM
Configuration: D8R Track-Type Tractor 7XM00001-UP (MACHINE) POWERED BY 3406 Engine
Disassembly and Assembly
D8R Track-Type Tractor Power Train
Media Number -SENR8327-11 Publication Date -01/08/2018 Date Updated -17/08/2018
i01022271
Track Roller Frame - Disassemble
SMCS - 4151-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Description Qty
A
0S-1587 Bolt (1/2 inch by 13 by 1 3/4 inch) 1
1F-7958 Nut (1/2 inch by 13) 1
B Bar Stock (1/2 inch by 2 inch by 10 inch) 4
C
1P-0520 Driver Gp 1
8E-2898 Plate 1
1H-3110 Bearing Puller 1
D FT-2213 Strap (Group) 1
F
9U-6600 Manual Pump 1
1U-5197 Hydraulic Cylinder 1
1P-1838 Adapter (1 1/4 inch by 12) 1
6V-2108 Sleeve 1
6V-3187 Adapter (1 1/4 inch by 12) 1
5P-4184 Tool Stud (1 1/4 inch by 12 by 18 inch) 1
G FT-1713 Wedge 2
H 136-1452 Internal Tip Pliers 1
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D8R Track-Type Tractor 7XM00001-UP (MACHINE) POWERED BY 3406 Engine(...
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Start By:
a. Remove the track roller frame. See the procedure in Disassembly and Assembly, "Track
Roller Frame - Remove" in this module.
Personal injury can result from performing service on the track roller
frame.
Refer to Special Instruction, SMHS8273 for inspection and removal
procedures before performing any service.
Personal injury or death can result from lifting a heavy assembly.
The heavy assembly can fall if using an incorrect hoist to lift the load.
Be sure the hoist has the correct capacity to lift a heavy assembly.
Approximate weight of the assembly is given below.
NOTICE
Care must be taken to ensure that fluids are contained during
performance of inspection, maintenance, testing, adjusting, and repair
of the product. Be prepared to collect the fluid with suitable containers
before opening any compartment or disassembling any component
containing fluids.
Refer to Special Publication, NENG2500, "Dealer Service Tool
Catalog" for tools and supplies suitable to collect and contain fluids on
Cat®
products.
Dispose of all fluids according to local regulations and mandates.
1. Place the track roller frame on a level surface. Support each end of the track roller frame
with the track guides.
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Illustration 1 g00621097
2. Remove O-ring seal (2) from seal retainer (3).
3. Remove eight bolts (1) and retainer (3) from the track roller frame.
4. Remove the O-ring seal from retainer (3) which seals between the retainer and the track
roller frame.
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5. Position tool (A) according to Illustration 2. Rotate the nut in order to apply pressure to
plate (4). When plate (4) and retainer (5) are separated sufficiently, insert tool (B) in order
to keep the plate and the retainer separate. Insert bar stock (B) at four equally spaced
locations around the retainer.
6. Use a soft hammer around the outer diameter of the retainer to loosen and remove plate (4).
Note: The 8E-2898 Plate is the same component that is used on the end of the pivot shaft.
Note: Mark the retainers before disassembly for correct assembly in the original positions.
7. Use a hydraulic press and tool (C) to remove retainer (6) from retainer (5).
8. Use a hydraulic press to remove seal (7) from retainer (5).
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NOTICE
When these components are removed, the components are damaged or
destroyed.
9. Inspect bearings (8) on each side of the track roller frame for wear and for damage. Remove
the two bearings from the track roller frame, if necessary.
Note: The track roller frame weighs 4350 kg (9600 lb).
10. Use a suitable lifting device to position the track roller frame on wood blocks. See
Illustration 7. Remove tool (D).
11. Mark the track idlers, the caps, and the shims, so that the components are assembled in the
original locations. Remove the track idlers.
Reference: Refer to Disassembly and Assembly, "Idler - Remove" in this module.
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12. Mark the track rollers, the caps, and the track roller frame, so that the single flange rollers
and the double flange rollers are installed in the original locations.
Reference: Refer to the procedure in Disassembly and Assembly, "Track Roller - Remove"
in this module.
Note: The single flange track roller weighs 88 kg (195 lb). The double flange track roller
weighs 98 kg (215 lb).
13. Fasten a suitable lifting device to track roller (14). Remove four bolts (12) and two caps
(13). Remove the track roller from the minor bogie. Repeat this procedure for all of the
track rollers.
14. Remove bolts (16) and track guides (15) from the major bogies.
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Note: Removal of the plugs and stoppers releases oil.
15. Use a variable speed drill to remove plug (17) and stopper (19) from each end of cartridge
pin (18).
16. Install tool (F) on the major bogie. Suspend the tool by a lifting device. See Illustration 11.
Remove cartridge pin (18).
17. Remove minor bogie (20) from the major bogie.
18. Repeat Steps 15 through 17 for the remainder of the minor bogies.
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19. Install tool (G) between the track roller frame and the major bogie in order to hold the
components in place during the removal of the cartridge pins.
20. Use tool (H) to remove retaining ring (21) from each side of the track roller frame.
21. Install one 5/8 inch by 11 NC eyebolt (22) in plate (23). Remove plate (23) from each side
of the track roller frame.
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Note: Removal of the plugs and stoppers releases oil.
22. Use a variable speed drill to remove plug (24) and stopper (25) from each end of cartridge
pin (26). Remove plugs (27) from each side of the track roller frame.
Note: The major bogie weighs 190 kg (420 lb).
23. Fasten a suitable lifting device to major bogie (28).
24. Install tool (F) on the major bogie. Suspend the tool by a lifting device. See Illustration 17.
Remove cartridge pins (26).
25. Repeat Steps 19 through 24 for the remainder of the major bogies.
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26. Remove pad assemblies (29) from the track roller frame and from the major bogies.
27. Remove the front track roller frame from the rear track roller frame.
Reference: Refer to Disassembly and Assembly, "Track Roller Frame (Front) - Remove" in
this module.
28. Remove the track adjuster.
Reference: Refer to Disassembly and Assembly, "Track Adjuster - Remove" in this
module.
29. Remove the recoil spring.
Reference: Refer to Disassembly and Assembly, "Recoil Spring - Remove" in this module.
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All Rights Reserved.
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D8R Track-Type Tractor 7XM00001-UP (MACHINE) POWERED BY 3406 Engin...
2020/1/30

Shutdown SIS
Previous Screen
Product: TRACK-TYPE TRACTOR
Model: D8R TRACK-TYPE TRACTOR 7XM
Configuration: D8R Track-Type Tractor 7XM00001-UP (MACHINE) POWERED BY 3406 Engine
Disassembly and Assembly
D8R Track-Type Tractor Power Train
Media Number -SENR8327-11 Publication Date -01/08/2018 Date Updated -17/08/2018
i03464703
Track Roller Frame - Assemble
SMCS - 4151-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number Description Qty
D FT-2213 Strap (Group) 1
H 136-1452 Internal Tip Pliers 1
J
9U-6600 Hand Hydraulic Pump 1
5P-4776 Tool Stud (1 inch by 14 by 18 inch) 2
3K-5234 Hard Washer (6 mm by 49 mm) 2
1A-1935 Nut (1 inch by 14) 2
6V-3175 Double Acting Cylinder 1
6V-4871 Reaction Bar 1
K
1F-7958 Nut (1/2 inch by 13) 4
- Threaded Rod (1/2 inch by 13 by 8 inch) 2
5P-8245 Hard Washer (3 mm by 25.5 mm) 4
L
8T-3053 Ring 1
6V-3141 Plate 1
M 5P-7504 Oil -
N 5P-3931 Anti-Seize Compound -
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When you are using hydraulic cylinders and puller studs, always ensure
that the rated capacity of the puller stud meets or exceeds the rated
capacity of the hydraulic cylinder. If the puller stud does not meet or
exceed the rated capacity of the hydraulic cylinder, a sudden failure of
the puller stud could occur. The sudden failure of the puller stud could
result in personal injury or death.
NOTICE
Do not use threaded rods that have not been hardened as tooling with
hydraulic cylinders. The maximum rated tonnage should be stamped
on one end of the puller studs. Do not use threaded rods that have not
been stamped with the rated tonnage.
Reference: Refer to Specifications, "Bogie Suspension" in the Service Manual for your machine.
1. Install the recoil spring.
Reference: Refer to Disassembly and Assembly, "Recoil Spring - Install" in this module.
2. Install the track adjuster.
Reference: Refer to Disassembly and Assembly, "Track Adjuster - Install" in this module.
3. Install the front track roller frame in the rear track roller frame.
Reference: Refer to Disassembly and Assembly, "Track Roller Frame (Front) - Install" in
this module.
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4. Install pad assemblies (29) on the track roller frame and on the major bogies.
Note: The weight of the major bogie is approximately 190 kg (420 lb).
5. Fasten a suitable lifting device to major bogie (28). Install the major bogie in the track roller
frame.
6. Add 60 ± 3 cc of Tooling (M) to the cartridge pins. Install the rubber stoppers to
3.0 ± 1.0 mm (0.118 ± 0.039 inch) below the surface of the pin.
7. Apply Tooling (N) to the bores of the major bogie and to the bores of the track roller frame.
NOTICE
Install the cartridge pin with the mark (X) on the outside of the track
roller frame. Position the mark (X) to the top or to the bottom of the
vertical centerline.
8. Install the cartridge pins in both sides of the track roller frame.
3/10
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9. Position plate (23) and Tooling (J), as shown. The step in plate (23) should be oriented
toward Tooling (J).
10. Install the cartridge pin in the major bogie. Plate (23) must be level with the groove in the
track roller frame.
11. Install plugs (27) in each side of the track roller frame.
12. Use Tooling (H) to install retaining ring (21) on each side of the track roller frame.
13. Repeat Steps 5 through 12 for the remainder of the major bogies.
Note: The minor bogie (20) must be installed with the part number or the words THIS SIDE
OUT toward the outside of the major bogie.
14. Position minor bogie (20) in the major bogie.
15. Add 60 ± 3 cc of Tooling (M) to the cartridge pins. Install the rubber stoppers to a depth of
3.0 ± 1.0 mm (0.12 ± 0.04 inch) below the surface of the pin.
16. Apply Tooling (N) to the bores of the major bogie and to the bores of the minor bogie.
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NOTICE
Install the cartridge pin with the mark (X) on the outside of the track
roller frame. Position the mark (X) to the top or to the bottom of the
vertical centerline.
17. Use Tooling (J) to install cartridge pin (18) in the major bogie and in the minor bogie. The
cartridge pin must be level with the outside surface of the major bogie.
18. Repeat Steps 14 through 17 for the remainder of the minor bogies.
19. Install track guides (15) and bolts (16) on the major bogies. Tighten the bolts to a torque of
475 ± 50 N·m (350 ± 37 lb ft).
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20. Install single flange rollers and double flange rollers in the original locations.
Reference: Refer to Specifications, "Track Rollers" in the Service Manual for your machine
for the correct installation of the track rollers.
Note: The single flange track roller weighs approximately 88 kg (195 lb). The double flange
track roller weighs approximately 98 kg (215 lb).
21. Fasten a suitable lifting device to track roller (14). Install the track roller on the minor bogie.
Install four bolts (12) and two caps (13). Repeat this procedure for all of the track rollers.
22. Align the holes in the shafts with the dowels in caps (13). Install caps (13) and bolts (12).
Tighten the bolts to a torque of 750 ± 70 N·m (550 ± 50 lb ft).
23. Install the track idlers.
Reference: Refer to Disassembly and Assembly, "Idler - Install" in this module.
24. Install Tooling (D) on the major bogies.
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Note: Lower the temperature of the bearings before installation.
25. If two bearings (8) were removed, install two new bearings in the sides of the track roller
frame.
26. Apply Tooling (N) to the outer diameter of seal (7). Use a hydraulic press to install seal (7)
in retainer (5).
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Caterpillar Cat D8R TRACK-TYPE TRACTOR Dozer Bulldozer (Prefix 7XM) Service Repair Manual (7XM00001 and up).pdf

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Caterpillar Cat D8R TRACK-TYPE TRACTOR Dozer Bulldozer (Prefix 7XM) Service Repair Manual (7XM00001 and up).pdf