Caterpillar Cat D6N XL TRACK-TYPE TRACTOR (Prefix NJN) Service Repair Manual Instant Download.pdf

Product: TRACK-TYPE TRACTOR
Model: D6N XL TRACK-TYPE TRACTOR NJN
Configuration: D6N XL, LGP TRACK-TYPE TRACTOR NJN00001-UP (MACHINE) POWERED BY C7.1 Engine
Disassembly and Assembly
D6N Track-Type Tractor Power Train
Media Number -UENR4080-03 Publication Date -01/09/2015 Date Updated -31/07/2018
i06691352
Final Drive - Disassemble
SMCS - 4050-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 439-3938 Link Bracket 3
B 1P-0074 Slide Hammer Puller Gp 1
C
FT-1934 Puller Beam 1
- (16 mm x 190.5 mm) Bolt 4
5P-8247 Hard Washer 4
6V-3170 Double Acting Cylinder 1
9U-6600 Hand Hydraulic Pump 1
1P-0521 Driver Group 1
D 439-3940 Bracket As 2
Start By:
a. Remove the final drive.
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D6N XL, LGP TRACK-TYPE TRACTOR NJN00001-UP (MACHINE) POWERED ...
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Illustration 1 g01234745
1. Attach Tooling (A) and a suitable lifting device to carrier (1). The weight of carrier (1) is
approximately 50 kg (110 lb).
2. Remove bolts (2) and carrier (1) from sprocket hub (3). Position carrier (1) onto suitable
cribbing.
3. Remove bolt (4), the washer, the retainer, and the O-ring seal from carrier (1).
4. Use a suitable press to remove shaft (5) from carrier (1).
5. Repeat Steps 3 and 4 for the remaining shafts.
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6. Remove planetary gear (8) from carrier (1).
7. Remove bearing cones (6) and (9) from planetary gear (8).
8. Remove bearing cups (7) from planetary gear (8).
9. Repeat Steps 6 through 8 for the remaining planetary gears.
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10. Remove bolts (10) and retainer (11).
11. Remove ring gear hub (12) and ring gear (13).
12. Remove ring (14) and ring gear hub (12) from ring gear (13).
13. Use Tooling (B) to remove bushing (15) and lip-type seal (16) (not shown).
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14. Raise the temperature of bearing cone (17).
15. Use Tooling (C) to remove bearing cone (17) from the spindle.
Note: Do not lift the sprocket hub so that the sprocket hub contacts the fittings that are on
the hydraulic cylinder. Damage to the fittings could occur.
16. Remove Tooling (C).
17. Attach Tooling (D) and a suitable lifting device to sprocket hub (3). The weight of sprocket
hub (3) is approximately 135 kg (298 lb). Remove sprocket hub (3) from the spindle.
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18. Remove bearing cups (18) and (19) from sprocket hub (3).
19. Remove Duo-cone seal (20) from sprocket hub (3).
20. Remove Duo-cone seal (22) from spindle (23).
21. Remove bearing cone (21) from spindle (23).
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i03902166
Final Drive - Assemble
SMCS - 4050-016
Assembly Procedure
Table 1
Required Tools
D 138-7575 Link Bracket 2
E 1P-0520 Driver Gp 1
F
169-0503 Installation Kit 1
8M-9395 Seal Installer 1
G 1U-7234 Feeler Gauge 1
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1. Raise the temperature of bearing cone (21). Install bearing cone (21) onto spindle (23).
2. Use Tooling (F) (not shown) in order to install Duo-cone seal (22). Refer to Disassembly
and Assembly, "Duo-Cone Conventional Seals - Install".
3. Lower the temperature of bearing cups (19) and (18).
4. Install bearing cups (19) and (18) in hub (3).
5. Use Tooling (F) (not shown) in order to install Duo-cone seal (20) in hub (3). Refer to
Disassembly and Assembly, "Duo-Cone Conventional Seals - Install".
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6. Install Tooling (D) and a suitable lifting device to hub (3). Install hub (3) onto the spindle.
The weight of hub (3) is approximately 135 kg (298 lb).
7. Install lip seal (16) and sleeve bearing (15).
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8. Position hub (12) onto gear (13). Install ring (14).
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9. Raise the temperature of bearing cone (17). Install bearing cone (17) on the spindle.
10. Install hub (12) and gear (13) as an assembly.
11. Install retainer (11) and bolts (10). Tighten all bolts (10) in a star pattern. Tighten bolts (10)
to a torque of 120 ± 20 N·m (89 ± 15 lb ft). Continually rotate hub (12) in order to properly
seat bearing cone (17). Tighten bolts (10) to a torque of 120 ± 20 N·m (89 ± 15 lb ft) in
order to ensure the proper torque.
12. Use Tooling (G) (not shown) in order to verify that the spindle is touching the retainer.
13. If necessary, repeat Step 11 and Step 12 in order to verify that bearing cone (17) is seated
properly.
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14. Lower the temperature of bearing cups (7). Install bearing cups (7) into gear (8).
15. Position bearing cones (6) and (9) into gear (8).
16. Position gear (8) into carrier (1).
17. Lower the temperature of shaft (5). Use a suitable press in order to install shaft (5). Install
shaft (5) until the end of the shaft is flush with the outer surface of carrier (1).
18. Install bolt (4) and the plate to carrier (1).
19. Verify that there is metal to metal contact between plates (4) and the shafts.
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20. Repeat Steps 17 through 19 for the remaining shafts.
21. Attach Tooling (A) to carrier (1). Position carrier (1) into hub (3). The weight of carrier (1)
is approximately 41 kg (90 lb).
22. Install bolts (2).
23. Remove Tooling (A).
End By:
a. Install the final drive. Refer to Disassembly and Assembly, "Final Drive - Install".
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i06740931
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 154-6181 Forcing Screw 3
B 439-3940 Bracket As 1
C 142-1664 Lifting Bracket Gp 1
D 8S-9906 Ratchet Puller 1
Start By:
a. Separate the track.
b. Remove the steering motor.
c. Remove the axles.
Personal injury can result from hydraulic oil pressure and hot oil.
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Hydraulic oil pressure can remain in the hydraulic system after the
engine has been stopped. Serious injury can be caused if this pressure is
not released before any service is done on the hydraulic system.
Make sure all of the work tools have been lowered to the ground, and
the oil is cool before removing any components or lines. Remove the oil
filler cap only when the engine is stopped, and the filler cap is cool
enough to touch with your bare hand.
1. Remove bolts (1).
2. Install Tooling (A) and remove adapter (2).
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3. Remove two bolts (3) and bolt (4) to install Tooling (B). Remove two bolts (5).
4. Remove bolts (6) and the nuts from the top of the sprocket segment.
5. Attach Tooling (C) and a suitable lifting device to the final drive, steering differential, and
brake (left side). The weight of the final drive, steering differential, and brake (left side) is
approximately 680 kg (1500 lb).
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6. Remove remaining bolts (3) and the washers.
7. Attach Tooling (D) to Tooling (B) and Tooling (C).
8. Separate the final drive approximately 152 mm (6.0 inch).
9. Release the pressure on Tooling (D). Rotate the brake housing 90 degrees in the
counterclockwise direction.
10. Rotating the brake housing allows pinion (7) to point forward. Rotating the brake housing
will allow the final drive to swing toward the front of the machine. Rotating the brake
housing will allow clearance for the ring gear to clear the machine. Remove the final drive,
steering differential, and brake (left side).
Installation Procedure
1. Install the final drive, steering differential, and brake (left side) in the reverse order of
removal.
a. Apply SAE 30W lubricant to the threads of bolts (6). Tighten bolts (6) to a torque of
175 ± 40 N·m (129 ± 30 lb ft). Then, tighten bolts (6) by an extra 1/3 turn. The final
torque of bolts (6) should be a minimum of 380 N·m (280 lb ft).
4/5
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i06983856
Steering Differential and Brake - Disassemble
SMCS - 4131-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Description Qty
B 3K-4897 Spring Pin 8
C 6V-4072 Spanner Wrench 1
D
9S-9154 Step Plate 1
6V-3009 Bar 1
8S-6470 Forcing Screw 1
8S-5133 Plug 1
5P-8245 Washer 4
1D-4719 Full Nut 2
2H-6488 Bolt 2
E 9S-9154 Step Plate 1
6V-3009 Bar 1
8S-6470 Forcing Screw 1
8S-5133 Plug 1
5P-8245 Washer 4
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1D-4719 Full Nut 2
1D-4574 Bolt 2
8H-0663 Bearing Puller 1
F 138-7575 Link Bracket 3
G
8B-7550 Leg 2
8B-7559 Adapter 2
3H-0465 Plate 4
1P-0498 Plate 1
1B-4207 Full Nut 2
5H-9976 Screw 1
5B-0637 High Idle Nut 1
8H-0684 Ratchet Wrench 1
8B-7563 Handle 1
5F-7353 Washer 1
8B-7548 Push-Puller Tool Gp 1
Start By:
a. Remove the left final drive, the steering differential, and the brake. Refer to Disassembly
and Assembly, "Final Drive, Steering Differential, and Brake (Left Side) - Remove"
.
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1. Remove bolts (1) and the washers.
2. Remove two opposite bolts (2).
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3. Install Tooling (A) and a suitable lifting device.
4. Remove sliding carrier (3). The weight of sliding carrier (3) is approximately 48 kg
(105 lb).
5. Remove Tooling (A).
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6. Remove remaining bolts (2) and slinger (4) from planetary carrier (7).
7. Remove retaining ring (5), thrust ring (5A), and planetary carrier (7) from ring gear (6).
8. Remove O-ring seal (10) from planetary carrier (7).
9. Use a hammer and a punch to push pin (12) in shaft (11).
10. Remove shaft (11), planetary gear (9), discs (8), and bearing (13) from planetary carrier (7).
11. Remove pin (12) from shaft (11).
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13. Remove lockring (14) and remove retaining ring (16).
14. Remove sun gear (15) from planetary carrier (18).
15. Remove spacer (17).
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16. Remove bolts (19), plate (20), and gear (21) from planetary carrier (18).
17. Use Tooling (B) to compress the retaining ring that holds planetary carrier (18) in ring gear
(6).
18. Separate planetary carrier (18) from ring gear (6).
19. Remove the retaining ring from planetary carrier (18).
20. Use a hammer and a punch to push pin (23) in shaft (24).
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21. Remove shaft (24), planetary gear (22), discs (26), and bearing (25) from planetary carrier
(18).
22. Remove pin (23) from shaft (24).
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24. Place a bolt in the teeth of pinion gear (27) to prevent movement.
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25. Bend the tang on lock washer (29) away from nut (28).
26. Use Tooling (C) to remove nut (28) from the pinion.
27. Remove lockwasher (29) and washer (30) from the pinion.
28. Remove bolts (32).
29. Remove carrier (31) from the support bracket.
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D6N XL, LGP TRACK-TYPE TRACTOR NJN00001-UP (MACHINE) POWERE...
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30. Use Tooling (D) to force pinion (27) from bearing cone (33) and carrier (31).
11/22
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31. Use Tooling (E) to remove bearing cone (34) from pinion (27).
12/22
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Caterpillar Cat D6N XL TRACK-TYPE TRACTOR (Prefix NJN) Service Repair Manual Instant Download.pdf

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