- Track-Type Tractor:
- D6N (S/N: LJR1-UP; PER1-UP; MLW1-UP)
Introduction
The following special instruction provides the procedure for installation of the lift cylinders and the 6SU bulldozer with a single tilt cylinder.
Note: See the related section for the necessary parts list.
When the assembly is completed, prepare the machine for service. Refer to the Operation and Maintenance Manual.
Note: Do not perform any procedure in this Special Instruction until the information has been read and understood.
ReferenceService Manual, Parts Manual, Operation and Maintenance Manual.
Safety
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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. |
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NOTICE |
---|
Do not allow any dirt or foreign material to get into the hydraulic system during assembly, connection of lines, when components are filled with fluid, or during any maintenance operation. |
Note: Clean all pins and bores in order to remove any dirt or corrosion before assembly.
Note: Before, you begin this procedure attach a Do Not Operate Tag to the start switch of the machine.
Approximate Weights
Cylinder Groups     | |
---|---|
Item     | Weight     |
Lift Cylinder (1)     | 57 kg (125 lb)     |
Tilt Cylinder     | 92 kg (200 lb)     |
( 1 ) | The weight is for each lift cylinder. |
6SU Bulldozer     | |
---|---|
Item     | Weight     |
Blade     | 1030 kg (2270 lb)     |
Arm Assembly (1)     | 360 kg (795 lb)     |
Support (2)     | 139 kg (305 lb)     |
Trunnion (3)     | 41 kg (90 lb)     |
( 1 ) | The weight is for each arm assembly. |
( 2 ) | The weight is for each support. |
( 3 ) | The weight is for each trunnion. |
Procedure for Shimming
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Illustration 1 | g00494467 |
- Remove all of the shims from push arm (1) .
- Remove excess rust and paint from the contact surfaces of these components: the push arm, the cap and the shims.
- Install push arm (1) and cap (2) on trunnion (3) without shims. Use the largest torque from the following list in order to tighten the bolts.
- Five percent of the specified torque
- 50 N·m (37 lb ft)
Maintain equal distance on both space (A) and space (B) of cap (2). Observe spaces (A) and (B) in order to determine the required number of shims.
- Five percent of the specified torque
- Loosen the bolts that are on cap (2). As needed, insert shims into spaces (A) and (B). When possible, use an equal number of shims for spaces (A) and (B) .
Note: The number of shims at space (A) must be within one of the number of shims at space (B). For example, if space (A) has eight shims, space (B) must have seven, eight, or nine shims.
- Add one additional shim to space (A). Add one additional shim to space (B) .
- Tighten the bolts that are on cap (2) to the proper torque.
- The push arm should move freely on the trunnion. The specified minimum tolerance is 0.25 mm (0.010 inch).
Note: It may be necessary to remove one or more shims after a short period of time. Wear can be caused by normal variations of the surface or variations in the thickness of the paint.
Installation of Mounting Group, Lift Cylinders, and Lift Cylinder Lines
Necessary Parts
138-7033 Cylinder Mounting Gp     | |||
---|---|---|---|
Item     | Part Number     | Description     | Qty     |
1     | 8G-5501     | Handrail (Right)     | 1     |
2     | 3G-8891     | Spacer     | 4     |
3     | 115-4561     | Bushing     | 2     |
4     | 0S-0175     | Clevis Pin     | 2     |
5     | 6S-6646     | Cotter Pin     | 2     |
6     | 8G-5428     | Pin     | 2     |
7     | 4T-0231     | Retainer     | 8     |
8     | 8G-5502     | Handrail (Left)     | 1     |
9     | 115-4581     | Support As (Left)     | 1     |
10     | 115-4592     | Link     | 2     |
11     | 115-4591     | Support As (Right)     | 1     |
12     | 8T-4183     | Bolt     | 2     |
13     | 8T-4223     | Hard Washer     | 12     |
14     | 149-6309     | Pin     | 6     |
15     | 6V-7687     | Locknut     | 2     |
16     | 8T-4139     | Bolt     | 12     |
17     | 9W-9996     | Bar     | 2     |
18     | 4J-0805     | Washer     | 34     |
271-8871 Lift Cylinder Lines Gp and 275-8416 Lift Cylinder Gp that are used with S/N:D1Y and ; S/N:S6A     | |||
---|---|---|---|
Item     | Part Number     | Description     | Qty     |
19     | 272-1387     | Hose As     | 2     |
20     | 272-1388     | Hose As     | 2     |
21     | 148-8341     | Connector As     | 4     |
22     | 5P-7464     | Clip     | 4     |
23     | 5P-7465     | Clip     | 4     |
24     | 5P-7468     | Clip     | 2     |
25     | 5P-7469     | Clip     | 2     |
26     | 6V-7359     | Grommet     | 4     |
27     | 7G-3833     | Clip     | 2     |
28     | 7G-3834     | Clip     | 2     |
29     | 8C-3174     | Grommet     | 2     |
30     | 8T-4121     | Hard Washer     | 4     |
31     | 8T-4136     | Bolt     | 4     |
32     | 8T-4139     | Bolt     | 4     |
33     | 8T-4244     | Nut     | 4     |
34     | 275-8416     | Lift Cylinder Gp     | 2     |
Installation Procedure for Cylinder Mountings
- Install support assembly (11) on the machine by using the following parts: bushing (3), pin (6), retainer (7), bolt (16) and washer (13) .
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Illustration 2 | g01907038 |
Note: Coat all bearing surfaces of pins and bores at assembly with 5P-0960 Grease Cartridge .
- Install link assembly (10) to the machine and support assembly (11) by using two pins (14) and washer (18) .
Note: Use washer (18) as shims.
- Install five shims (18) in order to locate the link assembly away from the centerline of the machine.
- Install three shims (18) on the machine side of the link assembly (10) inside the support assembly (11) .
- Install nine shims (18) to the opposite side of the link assembly (10) inside the support assembly (11) .
- Secure pins by using two retainers (7), two washers (13), and two bolts (16). Tighten bolts (16) to 105 ± 20 N·m (77 ± 15 lb ft).
- Install handle (8) to support (11) by using two washers (13) and two bolts (16). Tighten bolts (16) to 105 ± 20 N·m (77 ± 15 lb ft).
Note: Use handle (8) on right side of the machine and handle (1) on the left side of the machine.
- Install bar (17) to support (11) by using pin (4) and pin (5) on the bottom and bolt (12) and locknut (15) on the top. Tighten bolt (12) to 105 ± 20 N·m (77 ± 15 lb ft).
Note: Bar (17) must be free to rotate.
- Repeat Steps 1 through 5 for the other side of the machine.
Installation Procedure for Lift Cylinder and Lines
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Personal injury or death can result if the lift cylinder is not secured when the lift cylinder is being attached to the blade or detached from the blade. The lift cylinders can rotate freely rearward when the cylinder rod is retracted. Secure the lift cylinder until the cylinder rod is extended in order to prevent the lift cylinder from rotating rearward. |
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- Install the head end of lift cylinder (34) to support (11) by using pin (14), retainer (7), washer (13), and bolt (16). Torque for bolt (16) is 105 ± 20 N·m (77 ± 15 lb ft).
Note: Start on the right side of the machine.
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Illustration 3 | g01907043 |
271-8871 Lift Cylinder Lines Gp (A) 475 ± 5 mm (18.7 ± 0.2 inch) |
Note: Grab handles on the radiator guard must be removed prior to the installation of the lift cylinders.
- Connect hose assembly (20) to the rod end of lift cylinder (34) with connector (21) .
- Secure hose assembly (20) to lift cylinder by using clips (22) and (23), grommet (26), bolt (31), and washer (30) .
- Connect hose assembly (19) to the head end of lift cylinder (34) with connector (21) .
- Install grommet (29), clips (27) and (28), bolts (35), and nuts (33) to hose assemblies (19) and (20) .
- Connect the other end of hose assembly (20) to tee (C) .
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Illustration 4 | g01908996 |
Connections for use with 271-8871 Lift Cylinder Lines Gp (B) Head end (C) Rod end |
- Connect the other end of hose assembly (19) to tee (B) .
- Install grommet (29), clips (27) and (28), bolts (35), and nuts (33) to link assembly (10) at dimension (A) .
- Repeat Steps 1 through 8 for the left side of the machine.
Shipping Instruction for Lift Cylinders
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Personal injury or death can result if the lift cylinder is not secured when the lift cylinder is being attached to the blade or detached from the blade. The lift cylinders can rotate freely rearward when the cylinder rod is retracted. Secure the lift cylinder until the cylinder rod is extended in order to prevent the lift cylinder from rotating rearward. |
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- After, you disconnect lift cylinders (34) from the blade raise the cylinders to the UP position.
- Start on the right side of the machine and remove bottom bolt (12) and locknut (15) from bar (17) on support (11) .
- Using bolt (12) and locknut (15) connect bar (17) to the boss on lift cylinder (34) .
- Repeat Step 2 and Step 3 for the other side of the machine.
Installation of Trunnions
Necessary Parts
319-7125 Bulldozer Trunnion Gp     | |||
---|---|---|---|
Item     | Part Number     | Description     | Qty     |
35     | 287-5751     | Trunnion     | 2     |
36     | 143-3148     | Cover     | 2     |
37     | 5P-1979     | O-Ring Seal     | 2     |
38     | 7X-2475     | Bolt     | 20     |
39     | 8T-4122     | Hard Washer     | 20     |
40     | 8T-4192     | Bolt     | 4     |
41     | 8T-4223     | Hard Washer     | 4     |
Installation Procedure
- Start on the right side and remove the existing cover from the track roller frame.
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Illustration 5 | g01907054 |
- Install cover (36) to the track roller frame by using seal (37), two washers (41), and two bolts (40). Torque bolts (40) to 120 ± 20 N·m (89 ± 15 lb ft).
- Install trunnion (35) to cover (36) by using ten washers (39), and ten bolts (38). Torque bolts (38) to 300 ± 40 N·m (220 ± 30 lb ft).
- Repeat Step 2 and Step 3 for the other side of the machine.
- Move the machine into position between the arm assemblies and turn the engine to the OFF position.
Assembly of Bulldozer
Necessary Parts
320-5056 Push Arm Gp     | |||
---|---|---|---|
Item     | Part Number     | Description     | Qty     |
42     | 4F-0255     | Pin     | 2     |
43     | 4T-1520     | Cage As     | 1     |
44     | 115-4474     | Arm As (Left)     | 1     |
45     | 115-4473     | Arm As (Right)     | 1     |
46     | 8E-5701     | Shim     | 52     |
47     | 8E-5703     | Shim     | 102     |
48     | 8J-2880     | Bearing Cap     | 4     |
49     | 233-9134     | Tilt Cylinder Gp     | 1     |
50     | 124-9672     | Tilt Brace Assembly     | 1     |
51     | 160-6306     | Bearing Cap     | 2     |
52     | 3B-4626     | Cotter Pin     | 2     |
53     | 3F-6185     | Pin     | 2     |
54     | 6V-9167     | Bolt     | 12     |
55     | 7X-2566     | Bolt     | 6     |
56     | 8C-8478     | Bolt     | 4     |
57     | 8T-4123     | Plated Washer     | 6     |
58     | 8T-4131     | Nut     | 22     |
59     | 8T-5439     | Washer     | 6     |
60     | 8T-6381     | Bolt     | 4     |
61     | 6V-7742     | Full Nut     | 4     |
115-4594 Semi-Universal Blade Gp     | |||
---|---|---|---|
Item     | Part Number     | Description     | Qty     |
62     | 115-4595     | Semi-Universal Blade As     | 1     |
63     | 9U-8079     | Bit and Cutting Edge Gp     | 1     |
64     | 3B-4630     | Cotter Pin     | 2     |
65     | 4T-1481     | Link     | 1     |
66     | 8H-8898     | Pin     | 2     |
320-5928 Tilt Cylinder Lines Gp (1)     | |||
---|---|---|---|
Item     | Part Number     | Description     | Qty     |
67     | 301-9621     | Hose As     | 2     |
68     | 6V-9169     | Bulkhead Nut     | 2     |
69     | 7T-6934     | Hose As     | 1     |
70     | 3Y-5405     | Rubber     | 2     |
71     | 4J-5267     | O-Ring Seal     | 2     |
72     | 8T-4223     | Hard Washer     | 5     |
74     | 8T-4139     | Bolt     | 2     |
75     | 8C-3205     | Half Flange     | 4     |
76     | 8T-4196     | Bolt     | 8     |
77     | 8T-4121     | Hard Washer     | 8     |
78     | 8T-4192     | Bolt     | 3     |
79     | 4T-3521     | Guard     | 1     |
80     | 289-4638     | Guard As     | 1     |
81     | 311-9054     | Hose As     | 1     |
82     | 6V-8398     | O-Ring Seal     | 4     |
83     | 6V-8981     | Elbow     | 2     |
85     | 198-4778     | Hard Washer     | 2     |
86     | 8T-4183     | Bolt     | 2     |
( 1 ) | (S/N: MLW1-158; LJR1-133) |
346-1721 Tilt Cylinder Lines Gp (1)     | |||
---|---|---|---|
Item     | Part Number     | Description     | Qty     |
84     | 346-1725     | Hose As     | 1     |
68     | 6V-9169     | Bulkhead Nut     | 2     |
69     | 7T-6934     | Hose As     | 1     |
70     | 3Y-5405     | Rubber     | 2     |
71     | 4J-5267     | O-Ring Seal     | 2     |
72     | 8T-4223     | Hard Washer     | 5     |
73     | 324-1724     | Hose As     | 1     |
74     | 8T-4139     | Bolt     | 2     |
75     | 8C-3205     | Half Flange     | 4     |
76     | 8T-4196     | Bolt     | 8     |
77     | 8T-4121     | Hard Washer     | 8     |
78     | 8T-4192     | Bolt     | 3     |
79     | 4T-3521     | Guard     | 1     |
80     | 289-4638     | Guard As     | 1     |
81     | 311-9054     | Hose As     | 1     |
82     | 6V-8398     | O-Ring Seal     | 4     |
83     | 6v-8981     | Elbow     | 2     |
85     | 198-4778     | Hard Washer     | 2     |
86     | 8T-4183     | Bolt     | 2     |
( 1 ) | (S/N: MLW159-UP; LJR134-UP; PER1-UP) |
Assembly Procedure
- Support right push arm (45) and left push arm (44) with wood blocks.
Note: Remove all paint from mating surfaces.
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Illustration 6 | g01907376 |
- Use cage (43), six washers (57), six bolts (55), six nuts (58), and six washers (59) to assemble right push arm (45) and left push arm (44). Torque bolts (55) to 520 ± 70 N·m (383 ± 50 lb ft).
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Illustration 7 | g01907377 |
Note: Cage (43) must be installed to left push arm (44) with the bearing bore toward the left side.
- Install arm assembly (A) to blade assembly (62) by using cap (48), four bolts (54), four nuts (58), and shims (47). Torque bolts (54) to 520 ± 70 N·m (383 ± 50 lb ft). For instructions on shimming, refer to ""Procedure for Shimming" ".
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Illustration 8 | g01907393 |
- Repeat Step 3 for the other side of the machine.
- Install link assembly (65) to blade (62) and arm assembly (A) by using two pins (66) and two cotter pins (64) .
Note: Cotter pins (64) are installed on the right side only.
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Illustration 9 | g01907394 |
- Install brace assembly (50) to blade (62) with cap (48), shims (47), four bolts (56), and four nuts (58). Torque bolts (56) to 520 ± 70 N·m (383 ± 50 lb ft). For instructions on shimming, refer to ""Procedure for Shimming" ".
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Illustration 10 | g01907395 |
- Install the other end of brace assembly (50) to left push arm (44) by using pin (53), pin (42), and cotter pin (52) .
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Illustration 11 | g01907396 |
- Connect hose assemblies (69) and (81) to cylinder (49) by using seals (71), flanges (75), bolts (76), and washers (77) .
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Illustration 12 | g01907397 |
- Install guard assembly (80) to cylinder (49) by using two washers (72), two bolts (74), two washers (85), and two bolts (86) .
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Illustration 13 | g02117435 |
- Install cylinder (49) to bulldozer blade (62) with cap (48), shims (47), four bolts (54), and four nuts (61). For instructions on shimming, refer to ""Procedure for Shimming" ". Torque bolts (54) to 520 ± 70 N·m (383 ± 50 lb ft).
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Illustration 14 | g01907400 |
- Install cylinder (49) to right push arm (45) by using pin (53), pin (42), and cotter pin (52) .
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Illustration 15 | g01907402 |
- Measure the height from the ground to the center of trunnion assembly on the roller frame.
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Illustration 16 | g01907414 |
- Raise frame assembly (A) to the height that was measured in Step 12. Support frame assembly (A) with wood blocks.
- Move the machine between the push arms of frame assembly (A). Stop the engine.
- On each side, install cap (51) on frame assembly (A) with shims (46), two bolts (60), and two nuts (58). For instructions on shimming, refer to ""Procedure for Shimming" ". Torque bolts (60) to 520 ± 70 N·m (383 ± 50 lb ft).
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Illustration 17 | g01907415 |
- Install two elbows (83) and four seals (82) to bulldozer blade (62) with two nuts (68) .
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Illustration 18 | g01907486 |
- Connect hose (81) to the top elbow on the blade.
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Illustration 19 | g02117255 |
320-5928 Tilt Cylinder Lines Gp (S/N: MLW1-158; LJR1-133) (B) Head End (C) Rod End |
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Illustration 20 | g02116633 |
346-1721 Tilt Cylinder Lines Gp (S/N: MLW159-UP; LJR134-UP) (B) Head End (C) Rod End |
- Connect hose (69) to the bottom elbow on the blade.
- Connect hoses (67) to the elbows on the blade or connect hose (84) and hose (73) to the elbows on the blade.
- Install guard (79) and two pads (70) to hose assemblies and bulldozer blade (62) with three washers (72) and three bolts (78). Do not tighten bolts (78) .
- Connect the other end of hose assemblies (67) to the ports on the radiator housing or connect hose assembly (84) and hose assembly (73) to the ports on the radiator housing.
- Pull hose assemblies (67) to the left side of the machine in order to remove slack or pull hose assembly (84) and hose assembly (73) to the left side of the machine in order to remove slack.
- Connect the lift cylinders to bulldozer blade (62) with a cap, shims, four bolts, and four nuts. For instructions on shimming, refer to ""Procedure for Shimming"
".
Note: Items that are not numbered are part of the lift cylinder group.
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Personal injury or death can result if the lift cylinder is not secured when the lift cylinder is being attached to the blade or detached from the blade. The lift cylinders can rotate freely rearward when the cylinder rod is retracted. Secure the lift cylinder until the cylinder rod is extended in order to prevent the lift cylinder from rotating rearward. |
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Illustration 21 | g01907493 |
- Check the oil in the hydraulic tank and fill the oil, if necessary. Cycle the cylinders to full stroke in both directions in order to purge air from the lines and the cylinders. Refill the hydraulic tank to the FULL mark.
- After assembly is complete, prepare the machine for operation. Refer to the Operation and Maintenance Manual for instructions.
Standard Torque for Fasteners
Nuts and Bolts     | ||
---|---|---|
Thread Size     | Standard Torque (1)     | |
Metric     | Inch     | |
M6     |     | 12 ± 3 N·m (106 ± 27 lb in) 12 ± 3 N·m (9 ± 2 lb ft)     |
    | 1/4     | 12 ± 3 N·m (106 ± 27 lb in) 12 ± 3 N·m (9 ± 2 lb ft)     |
    | 5/16     | 25 ± 6 N·m (221 ± 53 lb in) 25 ± 6 N·m (18 ± 4 lb ft)     |
M8     |     | 28 ± 7 N·m (248 ± 62 lb in) 28 ± 7 N·m (21 ± 5 lb ft)     |
    | 3/8     | 47 ± 9 N·m (35 ± 7 lb ft)     |
M10     |     | 55 ± 10 N·m (41 ± 7 lb ft)     |
    | 7/16     | 70 ± 15 N·m (50 ± 11 lb ft)     |
M12     |     | 100 ± 20 N·m (75 ± 15 lb ft)     |
    | 1/2     | 105 ± 20 N·m (75 ± 15 lb ft)     |
M14     |     | 160 ± 30 N·m (120 ± 22 lb ft)     |
    | 9/16     | 160 ± 30 N·m (120 ± 22 lb ft)     |
    | 5/8     | 215 ± 40 N·m (160 ± 30 lb ft)     |
M16     |     | 240 ± 40 N·m (175 ± 30 lb ft)     |
    | 3/4     | 370 ± 50 N·m (275 ± 37 lb ft)     |
M20     |     | 460 ± 60 N·m (340 ± 44 lb ft)     |
    | 7/8     | 620 ± 80 N·m (460 ± 60 lb ft)     |
M24     |     | 800 ± 100 N·m (590 ± 75 lb ft)     |
    | 1     | 900 ± 100 N·m (660 ± 75 lb ft)     |
    | 1 1/8     | 1300 ± 150 N·m (960 ± 110 lb ft)     |
M30     |     | 1600 ± 200 N·m (1180 ± 150 lb ft)     |
    | 1 1/4     | 1800 ± 200 N·m (1320 ± 150 lb ft)     |
    | 1 3/8     | 2400 ± 300 N·m (1780 ± 220 lb ft)     |
M36     |     | 2800 ± 350 N·m (2065 ± 260 lb ft)     |
    | 1 1/2     | 3100 ± 350 N·m (2280 ± 260 lb ft)     |
( 1 ) | Refer to Specifications, SENR3130, "Torque Specifications" or the topic "Torque Specifications" in the Operation and Maintenance Manual of your machine for additional information. |
High Torque for Fasteners
Nuts and Bolts     | ||
---|---|---|
Thread Size     | High Torque     | |
Metric     | Inch     | |
M6     |     | 13 ± 3 N·m (115 ± 27 lb in) 13 ± 3 N·m (10 ± 2 lb ft)     |
    | 1/4     | 13 ± 3 N·m (115 ± 27 lb in) 13 ± 3 N·m (10 ± 2 lb ft)     |
    | 5/16     | 28 ± 7 N·m (248 ± 62 lb in) 28 ± 7 N·m (21 ± 5 lb ft)     |
M8     |     | 30 ± 7 N·m (266 ± 62 lb in) 30 ± 7 N·m (22 ± 5 lb ft)     |
    | 3/8     | 50 ± 10 N·m (37 ± 7 lb ft)     |
M10     |     | 60 ± 12 N·m (44 ± 9 lb ft)     |
    | 7/16     | 80 ± 15 N·m (77 ± 11 lb ft)     |
M12     |     | 105 ± 20 N·m (75 ± 15 lb ft)     |
    | 1/2     | 120 ± 20 N·m (89 ± 15 lb ft)     |
M14     |     | 170 ± 30 N·m (125 ± 22 lb ft)     |
    | 9/16     | 175 ± 30 N·m (130 ± 22 lb ft)     |
    | 5/8     | 240 ± 40 N·m (175 ± 30 lb ft)     |
M16     |     | 270 ± 40 N·m (200 ± 30 lb ft)     |
    | 3/4     | 430 ± 60 N·m (320 ± 44 lb ft)     |
M20     |     | 520 ± 70 N·m (383 ± 52 lb ft)     |
    | 7/8     | 700 ± 90 N·m (515 ± 66 lb ft)     |
M24     |     | 900 ± 100 N·m (665 ± 75 lb ft)     |
    | 1     | 1050 ± 150 N·m (775 ± 110 lb ft)     |
    | 1 1/8     | 1450 ± 150 N·m (1170 ± 110 lb ft)     |
M30     |     | 1800 ± 200 N·m (1320 ± 150 lb ft)     |
    | 1 1/4     | 2100 ± 250 N·m (1550 ± 185 lb ft)     |
    | 1 3/8     | 2700 ± 300 N·m (2000 ± 220 lb ft)     |
M36     |     | 3100 ± 350 N·m (2280 ± 260 lb ft)     |
    | 1 1/2     | 3600 ± 400 N·m (2650 ± 295 lb ft)     |