Caterpillar Cat D6N TRACK-TYPE TRACTOR (Prefix ALY) Service Repair Manual (ALY00001 and up).pdf

Service Repair Manual
Models
D6N TRACK-TYPE TRACTOR

Shutdown SIS
Previous Screen
Product: TRACK-TYPE TRACTOR
Model: D6N TRACK-TYPE TRACTOR ALY
Configuration: D6N XL, D/S, LGP TRACK-TYPE TRACTOR ALY00001-UP (MACHINE) POWERED BY 3126B Engine
Disassembly and Assembly
D6N Track-Type Tractor Power Train
Media Number -RENR5257-04 Publication Date -01/12/2015 Date Updated -15/12/2015
i02461619
Transmission - Disassemble
SMCS - 3030-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-1864 Retaining Ring Pliers 1
B 136-1452 Retaining Ring Pliers 1
C 9U-7480 Compressing Tube 1
D 1P-1863 Retaining Ring Pliers 1
E 138-7573 Link Bracket 2
Start By:
a. Separate the transmission and bevel gear. Refer to Disassembly and Assembly,
"Transmission and Bevel Gear - Seperate".
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.
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D6N XL, D/S, LGP TRACK-TYPE TRACTOR ALY00001-UP (MACHINE) POWE...
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https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

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.
Note: Cleanliness is an important factor. Before you begin the disassembly procedure, the exterior
of the components should be thoroughly cleaned. This will help to prevent dirt from entering the
internal mechanism. Precision components can be damaged by contaminants or by dirt. Perform
disassembly procedures on a clean work surface. Keep components covered and protected at all
times.
Illustration 1 g00970309
1. Remove four bolts (1A).
2. Remove transmission hydraulic control valve (1B).
3. Loosen nuts (2).
4. Remove sensors (1).
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5. Use Tooling (A) in order to remove retaining ring (3).
6. Remove bolts (4) and housing (5).
7. Remove ring (6) and bearing (7) from housing (5).
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8. Remove springs (8), discs (9), and plates (10).
9. Remove piston (11).
10. Remove seals (12) from piston (11).
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11. Attach Tooling (E) and a suitable lifting device to housing assembly (13).
12. Apply slight lifting pressure.
13. Use Tooling (B) in order to compress retaining ring (14). Remove housing assembly (13).
14. Remove retaining ring (14) and seals (15) from housing assembly (13).
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Personal injury can result from being struck by parts propelled by a
released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to
release the spring force.
15. Use a suitable press and Tooling (C) in order to remove ring (16).
16. Remove plate (17) and springs (18).
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17. Remove housing assembly (13) from coupling (19).
18. Remove piston (20) from housing assembly (13).
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20. Use Tooling (D) in order to remove retaining ring (22).
21. Remove gear (23).
22. Remove discs (24) and plates (25).
23. Remove gear (26).
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24. Remove ring (27) and plate (28).
25. Remove housing (29).
26. Remove piston (30) from housing (29).
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28. Remove plate (32) and discs (34). Remove springs (33).
29. Remove carrier assembly (35).
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D6N XL, D/S, LGP TRACK-TYPE TRACTOR ALY00001-UP (MACHINE) POW...
2021/11/17

30. Remove ring (36) from carrier assembly (35).
31. Compress ring (37) in order to remove gear (38) from carrier assembly (35).
32. Remove ring (37) from carrier assembly (35).
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33. Drive pin (39A) inward in order to remove shaft (39).
Note: Pin (39A) must be replaced during assembly.
34. Remove shaft (39).
35. Remove gear (40) and discs (41).
36. Remove bearing (42) from gear (40).
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37. Repeat Step 33 through Step 36 for the remaining gears.
38. Remove bolts (43) and housing (44).
39. Remove piston (45) from housing (44).
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41. Remove plates (47) and discs (49).
42. Remove springs (48).
43. Remove retaining ring (50).
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46. Remove gear (53) from shaft (51).
47. Use a suitable press in order to remove bearing (54) from shaft (51).
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48. Remove bearings (55) from shaft (51).
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50. Remove carrier assembly (57).
51. Remove gear (58) from carrier assembly (57).
53. Remove bearing (60) and gear (61) as an assembly.
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54. Use a suitable press in order to remove gear (61) from bearing (60).
55. Remove retaining ring (59).
56. Compress retaining ring (62) (not shown) in order to remove carrier assembly (57) from
gear (63).
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57. Remove retaining ring (62) from carrier assembly (57).
58. Drive pin (64) into shaft (65) (not shown).
Note: Replace pin (64) during installation.
59. Remove shaft (65), gears (66), and discs (67).
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60. Remove bearing (68) from gears (66).
61. Repeat Step 58 through Step 60 for remaining gears.
62. Remove plate (69) and rods (70).
63. Remove discs (71) and plates (72).
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64. Remove disc (73) and carrier (74).
65. Remove carrier (75) from carrier (74).
66. Remove ring (76) from carrier (75).
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67. Remove rings (77) from carrier (74).
Note: Replace pin (64) during installation.
69. Remove shaft (79), gear (80), and discs (81).
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70. Remove bearing (82) from gear (80).
71. Repeat Step 68 through Step 70 for remaining gears.
72. Attach Tooling (E) and a suitable lifting device to shaft (83).
73. Remove housing assembly (84) with shaft (83). The weight of housing assembly (84) with
shaft (83) is approximately 45 kg (100 lb).
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74. Remove piston (85).
76. Use Tooling (D) in order to remove retaining ring (87) and retaining ring (88) from housing
(84).
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78. Remove seals (89).
79. Use a suitable press in order to remove bearing (90) from shaft (83).
80. Remove O-ring seal (91) from cover (92).
Copyright 1993 - 2021 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Wed Nov 17 20:30:15 UTC+0800 2021
25/25
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Shutdown SIS
Previous Screen
Product: TRACK-TYPE TRACTOR
Model: D6N TRACK-TYPE TRACTOR ALY
Configuration: D6N XL, D/S, LGP TRACK-TYPE TRACTOR ALY00001-UP (MACHINE) POWERED BY 3126B Engine
Disassembly and Assembly
D6N Track-Type Tractor Power Train
Media Number -RENR5257-04 Publication Date -01/12/2015 Date Updated -15/12/2015
i03643037
Transmission - Assemble
SMCS - 3030-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-1864 Retaining Ring Pliers 1
B 136-1452 Retaining Ring Pliers 1
C 9U-7480 Compressing Tube 1
D 1P-1863 Retaining Ring Pliers 1
E 138-7573 Link Bracket 2
Note: Cleanliness is an important factor. Before assembly, thoroughly clean all parts in cleaning
fluid. Allow the parts to air dry. Do not use wiping cloths or rags to dry parts. Lint may be
deposited on the parts which may cause trouble. Inspect all parts. If any parts are worn or
damaged, use new parts for replacement. Dirt and other contaminants can damage the precision
component. Perform assembly procedures on a clean work surface. Keep components covered and
protected at all times.
1/29
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1. Install O-ring seal (91) onto cover (92) .
2. Raise the temperature of bearing (90) and install bearing (90) onto shaft (83) .
3. Install seals (89) . Lubricate seals (89) with the lubricant that is being sealed.
2/29
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4. Install shaft (83) .
5. Use Tooling (D) in order to install retaining ring (87) and retaining ring (88) into housing
(84) .
6. Install seals (86) onto piston (85) . Lubricate seals (86) with the lubricant that is being
sealed.
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7. Install piston (85) .
8. Install sun gear (83A) . Attach Tooling (E) and a suitable lifting device to shaft (83) .
9. Install housing assembly (84) with shaft (83) . The weight of housing assembly (84) with
shaft (83) is approximately 45 kg (100 lb). Remove Tooling (E) .
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10. Install bearing (82) into gear (80) .
11. Position discs (81) and gear (80) .
Note: Use a new pin (78) .
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15. Install rings (77) onto carrier (74) .
16. Install ring (76) onto carrier (75) .
17. Install carrier (75) into carrier (74) .
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18. Install carrier (74) .
19. Lubricate discs (71) and install discs (71) and plates (72) .
7/29
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20. Install rods (70) and plate (69) .
21. Install bearing (68) into gear (66) .
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22. Position discs (67) and gears (66) .
24. Install pin (64) into shaft (65) (not shown).
Note: Use a new pin (64) .
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26. Install retaining ring (62) onto carrier assembly (57) .
27. Compress retaining ring (62) in order to install carrier assembly (57) into gear (63) .
28. Install retaining ring (59) .
10/29
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Caterpillar Cat D6N TRACK-TYPE TRACTOR (Prefix ALY) Service Repair Manual (ALY00001 and up).pdf

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Caterpillar Cat D6N TRACK-TYPE TRACTOR (Prefix ALY) Service Repair Manual (ALY00001 and up).pdf