Caterpillar Cat D6T LGP TRACK-TYPE TRACTOR (Prefix SGT) Service Repair Manual Instant Download.pdf

Service Repair Manual
Models
D6T LGP TRACK-TYPE
TRACTOR

Shutdown SIS
Previous Screen
Product: TRACK-TYPE TRACTOR
Model: D6T LGP TRACK-TYPE TRACTOR SGT
Configuration: D6T TRACK-TYPE TRACTOR XL, XW, LGP, Differential Steering SGT00001-UP (MACHINE) POWERED BY C9.3 Engine
Disassembly and Assembly
D6T Track-Type Tractor Power Train
Media Number -UENR4055-03 Publication Date -01/12/2017 Date Updated -15/12/2017
i04905930
Steering Planetary and Brake - Disassemble
SMCS - 4132-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Description Qty
A 138-7575 Link Bracket 3
B 1P-0520 Driver Group 1
C 5B-4274 Forcing Bolt 3/8 - 16 by 3.5 inches 3
Start By:
A. Remove the final drive, the planetary group, and the brake.
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D6T TRACK-TYPE TRACTOR XL, XW, LGP, Differential Steering SGT00001-UP (...
2021/6/27
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Illustration 1 g02355593
1. Position the final drive, the planetary group, and the brake, as shown.
2. Remove bolts (3) that hold the planetary group and brake (1) to final drive (2) .
3. Attach Tooling (A) and a suitable lifting device to the planetary group and brake.
4. Install Tooling (C) in the final drive hub.
5. Tighten the forcing screws evenly in order to remove the planetary group and brake (1) from final
drive (2) . The weight of planetary group and brake (1) is approximately 136 kg (300 lb).
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Personal injury can result from parts and/or covers under spring
pressure.
Spring force will be released when covers are removed.
Be prepared to hold spring loaded covers as the bolts are loosened.
6. Remove bolts (4) . Remove ring gear (5) from housing (6) .
7. Remove friction discs (7) and the brake plates from the housing.
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8. Remove bolts (8) and plate (9) .
9. Position the housing on suitable cribbing.
Note: Do not allow planetary carrier (10) to fall when the carrier is pressed from housing (6) .
Note: If a shim pack is present between the plate (9) and planetary carrier (10) . Reuse the same
shim pack during assembly only if reusing the same planetary carrier (10) . If a new planetary
carrier (10) is being used the shim pack should be discarded.
10. Use Tooling (B) and a suitable press to remove planetary carrier (10) from housing (6) .
11. Remove bearing cone (11) from the housing.
12. Remove ring (14) from planetary carrier (10) . Remove bolts (13) . Remove slinger (12) from the
planetary carrier.
NOTICE
The bearing is destroyed if the bearing is removed.
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13. If necessary, remove bearing cone (15) from planetary carrier (10) .
14. Use a hammer and a punch to push pin (17) in shaft (16) .
15. Remove shaft (16) , planetary gear (19) , discs (20) , and bearings (21) from planetary carrier
(10) .
16. Remove pin (17) from shaft (16) .
17. Repeat Steps 14 through 16 for the remaining planetary gears.
18. Remove sun gear (18) from planetary carrier (10) .
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Personal injury can result from parts and/or covers under spring
pressure.
Spring force will be released when covers are removed.
Be prepared to hold spring loaded covers as the bolts are loosened.
19. Remove bolts (22) and washers.
20. Remove retainer (23) from piston (24) .
21. If necessary, remove bearing cups (25) and seal ring (26) from retainer (23) .
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22. Remove piston (24) and O-ring seal (27) from the housing.
23. Remove seal ring (28) from piston (24) .
Note: Inspect the O-ring seals. If necessary, replace the O-ring seals.
24. Remove spring (29) and ring (30) from housing (5) .
7/8
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Shutdown SIS
Previous Screen
i04905929
Steering Planetary and Brake - Assemble
SMCS - 4132-016
Assembly Procedure
Table 1
Required Tools
A 138-7575 Link Bracket 3
D 6V-6640 Sealant 1
ReferenceRefer to Specifications, "Brake and Planetary" in the Service Manual for your machine.
Note: Orient the disc spring with the outer edge downward.
1. Install ring (30) and spring (29) in housing (5) .
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2. Apply clean oil to seal ring (28) .
Note: Orient the seal ring with the lip downward. Refer to Illustration 2.
3. Install seal ring (28) in piston (24) .
4. Install piston (24) and O-ring seal (27) in the housing.
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5. Lower the temperature of bearing cups (25). Install bearing cups (25) in retainer (23) .
Note: Orient the seal ring with the lip downward. Refer to Illustration 4.
6. Apply clean oil to seal ring (26). Install seal ring (26) in retainer (23) .
Improper assembly of parts that are spring loaded can cause bodily
injury.
To prevent possible injury, follow the established assembly procedure
and wear protective equipment.
7. Install retainer (23) on piston (24). Align the oil passage in retainer (23) with the oil passage and
the O-ring seal in the housing. Install bolts (22) .
8. Install sun gear (18) in planetary carrier (10) .
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9. Install bearings (21) in planetary gear (19) .
10. Install discs (20) and planetary gear (19) in planetary carrier (10). Install shaft (16) .
Note: If the rubber in pin (17) is damaged, replace pin (17) .
11. Align the hole in shaft (16) with the hole in planetary carrier (10) and install pin (17). Install pin
(17) until the pin is even with the surface of planetary carrier (10) .
12. Repeat Steps 9 through 11 for the remaining planetary gears.
Note: If bearing cone (15) was removed from planetary carrier (10), a new bearing must be
installed.
13. Raise the temperature of bearing cone (15). Install the bearing cone on planetary carrier (10) .
14. Apply Tooling (D) to the flange of slinger (12) .
15. Install slinger (12) on planetary carrier (10). Install bolts (13). Tighten the bolts to a torque of 50
± 10 N·m (37 ± 7 lb ft).
16. Install ring (14) in planetary carrier (10) .
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17. Position housing (6) on planetary carrier (10) .
18. Raise the temperature of bearing cone (11). Install bearing cone (11) on planetary carrier (10) .
19. Position plate (9) onto the planetary carrier (10) .
Note: Install shim pack between plate (9) and planetary carrier (10), only if there was a shim
pack originally installed in the differential group and if the same planetary carrier is being reused.
Shim pack thickness should be 0.31 mm (0.0122inch).
20. Install bolts (8) .
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21. Install friction discs (7) and brake plates. Alternate the friction discs and the brake plates.
22. Position ring gear (5) on housing (6) .
23. Install bolts (4). Tighten bolts (4) to a torque of 135 ± 20 N·m (100 ± 15 lb ft).
6/7
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24. Use a suitable lifting device and Tooling (A) in order to position the planetary group and brake
(1) on final drive (2). The weight of the planetary group and brake is approximately 135 kg (300
lb).
25. Install the bolts (3) .
End By: Install the final drive, the planetary group, and the brake.
Copyright 1993 - 2021 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Sun Jun 27 15:49:17 UTC+0800 2021
7/7
2021/6/27

Shutdown SIS
Previous Screen
i04175780
Final Drive - Remove and Install
SMCS - 4050-010
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A FT-1952 Axle Removal Tool 1
B
8T-3207 Lifting Bracket 1
5P-8622 Shackle 1
2D-4593 5/8 - 11 by 5 1/2 inch 2
1B-4331 5/8 - 11 inch 2
2S-5658 Washer 4
Start By:
A. Separate the track.
Note: The planetary carriers of the final drives can be removed directly from the machine. Refer to
Disassembly and Assembly, "Final Drive Planetary Carrier (In Chassis) - Remove".
Without the sun gear in place, the brakes are ineffective. Personal
injury or death could result. Provide other means to hold or stop the
machine.
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1. Remove bolts (2) and cover (3) from final drive (1) .
2. Use Tooling (A) in order to remove axle (4) .
3. Remove two bolts (5) .
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4. Adjust the top bracket of Tooling (B) until Dimension (X) is 222.25 mm (8.750 inch).
5. Remove two bolts (6) and the nuts from the sprocket segment. Discard bolts (6) and the nuts.
6. Fasten Tooling (B) and a suitable lifting device to the final drive.
3/4
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7. Remove bolts (7) that hold the final drive and the brake together.
8. Use Tooling (B) to remove final drive (1) from the machine. The weight of final drive (1) is
approximately 454 kg (1000 lb).
Installation Procedure
1. Install final drive (1) in the reverse order of removal.
a. Tighten bolts (7) to a torque of 700 ± 90 N·m (516 ± 66 lb ft).
b. Lubricate new bolts (6) with SAE 30 oil. Install new bolts (6) and the nuts. Tighten bolts
(6) to a torque of 175 ± 40 N·m (130 ± 30 lb ft). Tighten bolts (6) an additional 1/3 turn.
Sun Jun 27 15:50:16 UTC+0800 2021
4/4
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Shutdown SIS
Previous Screen
i05236971
Final Drive - Disassemble
SMCS - 4050-015
Disassembly Procedure
Table 1
Required Tools
A
138-7573 Link Bracket 3
1A-2029 Bolt 1
C
FT-1934 Beam 1
6V-3160 Double Acting Cylinder 1
6V-9061 Pump Group 1
1D-4621 Bolt 4
D
2A-1538 Bolt 2
Start By:
A. Remove the final drives.
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1. Install Tooling (A) and a suitable lifting device to planetary carrier (3) .
2. Remove bolts (1). Remove planetary carrier (3) and the two O-ring seals from the hub. The
weight of planetary carrier (3) is approximately 137 kg (302 lb).
3. Remove retainers (2) .
4. Place support under planetary carrier (3) in order to prevent damage. Use Tooling (B) and a
suitable press to remove the planetary gear shafts.
5. Remove planetary gears (4) from planetary carrier (3) .
2/6
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6. Remove bearing cones (5) from gears (4) .
7. Remove the bearing cups from each side of the gears.
8. Remove bolts (6) and retainer (7) .
9. Attach a suitable lifting device to hub (12) and ring gear (8). The weight of hub (12) and ring
gear (8) is approximately 68 kg (150 lb). Remove hub (12) and ring gear (8) .
3/6
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10. Turn over hub (9) and ring gear (8). Remove retaining ring (10). Attach a suitable lifting device
to hub (9). The weight of hub (9) is approximately 37 kg (82 lb). The weight of ring gear (8) is
approximately 32 kg (71 lb). Remove hub (9) .
11. Install Tooling (C) on hub (12).
Note: Do not lift hub (12) too high. Do not allow hub (12) to contact the fitting on the hydraulic
cylinder.
12. Use Tooling (C) to loosen hub (12) from spindle (13). Remove Tooling (C) .
13. Remove bearing cone (11) .
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14. Install Tooling (D) and a suitable lifting device to hub (12). Remove hub (12) from spindle (13).
The weight of hub (12) is approximately 180 kg (397 lb).
15. Turn over hub (12). Remove Duo-Cone seal kit (15). Use a hammer and a punch to remove
bearing cup (16) .
16. Turn over the hub. Remove bearing cup (14) from the hub.
Note: If the Duo-Cone seal will be reused, mark the seal kits for installation purposes.
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Note: Bearing cone (18) may be damaged if the bearing cone is removed from spindle (13) .
17. Remove Duo-Cone seal (19) from spindle (13) .
18. If necessary, remove bearing cone (18) from the spindle.
19. Remove lip seal (17) from spindle (13) .
Sun Jun 27 15:51:16 UTC+0800 2021
6/6
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Shutdown SIS
Previous Screen
i04164792
Final Drive - Assemble
SMCS - 4050-016
Assembly Procedure
Table 1
Required Tools
A
1A-2029 Bolt 3
D
2A-1538 Bolt 2
E 1U-6437 Duo-Cone Seal Installer As 1
1. Apply clean oil to all the parts during assembly.
1/6
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2. Use Tooling (B) to install lip seal (17) in spindle (13) to a minimum depth of 9.65 mm (0.4 inch).
Do not apply excessive force to lip seal (17) during installation in order to avoid damaging the
seal. Put clean oil on the lip of the seal.
3. Raise the temperature of bearing cone (18) to a maximum temperature of 135 °C (275 °F). Install
bearing cone (18) on spindle (13) .
Note: Before the installation of the Duo-Cone seal, refer to Disassembly and Assembly, "Duo-
Cone Conventional Seals - Install" for the correct procedure.
4. Use Tooling (E) to install the Duo-Cone seal on spindle (13) .
5. Lower the temperature of bearing cups (14) and (16). Install bearing cups (14) and (16) in hub
(12) .
6. Use Tooling (E) to install the Duo-Cone seal in hub (12) .
7. Install Tooling (D) on hub (12). Attach a suitable lifting device to Tooling (D). Carefully position
hub (12) on spindle (13) .
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8. Raise the temperature of bearing cone (11). Install bearing cone (11) on spindle (13).
9. Attach a suitable lifting device to hub (9) and position hub (9) in ring gear (8). Install retaining
ring (10) .
3/6
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10. Turn over the hub (9) and ring gear (8). Attach a suitable lifting device to hub (9) and the ring
gear (8) into position in hub (12).
11. Put retainer (7) into position. Install bolts (6) while the hub is slowly rotated. Tighten bolts (6)
evenly to a torque of 135 ± 15 N·m (100 ± 11 lb ft). The retainer must contact the end of spindle
(13) after bolts (6) have been tightened.
12. Lower the temperature of bearing cups (20) and (21). Install the bearing cups in three planetary
gears (4) .
4/6
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13. Position the planetary carrier in a press. The shaft (22) must be in position with proper support in
order to be a positive stop for the shaft.
NOTICE
The shaft must be correctly installed. If the shaft is incorrectly
installed, the bearing preload will be incorrect. This will result in
component damage.
14. Position planetary gear (4) in the planetary carrier.
15. Lower the temperature of shaft (22). Use a suitable press to install the shaft in the planetary
carrier. After the installation, the end of shaft (22) must be flush with the retainer of the planetary
carrier. This will provide the correct bearing preload. The gear must rotate by hand after
installation. If the gear does not rotate, the problem must be corrected. Repeat this procedure for
all three shafts.
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16. Install three retainers (2) on shafts (22) .
17. Install Tooling (A). Attach a suitable lifting device to Tooling (A). Install the two O-ring seals on
the planetary carrier. Align the drain hole in the planetary carrier with the drain hole in the hub.
18. Position the planetary carrier in the hub.
19. Install bolts (1) that hold planetary carrier (3) to the hub. Remove Tooling (A) .
End By: Install the final drives.
Sun Jun 27 15:52:15 UTC+0800 2021
6/6
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Shutdown SIS
Previous Screen
i06852073
Final Drive, Steering Differential, and Brake (Left Side) -
Remove and Install
SMCS - 4050-010-LT; 4132-010-LT
Removal Procedure
Table 1
Required Tools
A
FT-1952 Axle Removal Tool 1
1U-7432 Adapter Assembly 1
B
8T-3207 Lifting Bracket 1
5P-8622 Shackle 1
1D-4615 Bolt 2
1B-4331 Nut 2
5P-8248 Washer 4
C
1B-4331 Nut 1
5P-8248 Washer 2
8S-9906 Ratchet Puller 1
1A-1460 Bolt 1
5P-8245 Washer 1
1A-8063 Bolt 1
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D 5B-4274 Bolt 3
Start By:
a. Separate the track.
b. Remove the drive axles.
c. Remove the steering motor.
d. Drain the oil from the final drive. Refer to Operation and Maintenance Manual, "Final Drive Oil -
Change".
1. Remove bolts (1) from adapter (2).
2. Install Tooling (D) in Holes (X). Remove adapter (2).
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3. Remove O-ring seal (3) from adapter (2).
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4. Insert Tooling (A) 940 mm (37.0 inch) in the final drive housing. Use Tooling (A) in order to
slide the sliding carrier off the bevel gear shaft.
5. Rotate Tooling (A) by 180 degrees.
6. Pull Tooling (A) until the sliding carrier stops.
7. Rotate Tooling (A) by 180 degrees and remove Tooling (A).
4/7
2021/6/27

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Caterpillar Cat D6T LGP TRACK-TYPE TRACTOR (Prefix SGT) Service Repair Manual Instant Download.pdf

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Caterpillar Cat D6T LGP TRACK-TYPE TRACTOR (Prefix SGT) Service Repair Manual Instant Download.pdf