Usage:
Introduction
This Special Instruction provides the necessary procedure for installing the lift cylinder group and the 9SU or 9U Bulldozer equipped with single or dual tilt cylinders.
NOTE: Each section contains the related parts list.
After the assembly is complete, prepare the machine for service as shown in the machine's Operation & Maintenance Manual.
Do not perform any procedure, outlined in this publication, or order any parts until you read and understand the information contained within.
Reference: Service Manual, Parts Manual and Operation & Maintenance Manual.
Additional Reference Article
To retrofit for the Three-Position Tilt Brace (option) see the following publication:
- * Special Instruction, SEHS9740, Conversion To Three-Position Tilt Brace.
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Do not attempt to assemble this machine until you have read and understand the assembly instructions. Improper procedures could result in injury or death. |
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| NOTICE |
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Do not let any dirt or foreign material get into the hydraulic system during assembly or maintenance operation. Keep the oil in the hydraulic system at the correct level to prevent pump cavitation. |
Weights
| NOTICE |
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When a hoist is used to lift any part or assembly, stand clear of the area. Always make sure the hoist has the correct capacity. Approximate weights of the components are shown in the chart which follows. |
Shimming Procedure (Typical)
Typical Example
1. Remove all the shims from assembly (1).
2. Install assembly (1) and cap (2) on trunnion (3) without the shims. Tighten the bolts, maintaining equal distance on both sides of the cap.
3. Insert as many shims as possible into spaces (A) and (B) between the cap and the assembly.
4. Add two additional shims to the total shims used.
5. Install half the shims at (A) and the other half at (B). Tighten the bolts to the proper torque.
6. This allows the assembly to move on the trunnion freely and within the specified tolerance.
Installation of Lift Cylinders
Necessary Parts
NOTE: Clean all surfaces where parts are to be installed, including removal of paint from mating surfaces.
Installation Procedure
Starting on one side:
1. Tie the rod end of the cylinder group to the cylinder base. This prevents the cylinder from extending during installation.
Earlier Model Shown
2. Install the lift cylinder group to yoke (1) with cap and bolts (2).
3. Install guard assembly (4) to bracket (3) with four mounts (5), eight washers (6), and eight nuts (7).
4. Tighten nuts (7) to a torque of 20 ± 4 N·m (15 ± 3 lb ft).
5. Install lamp group (8) to bracket (3) with two washers (9) (one on each side of the bracket), washer (10), and nut (11). Install grommet (12) in the guard assembly.
6. Tighten nut (11) to a torque of 45 ± 5 N·m (33 ± 4 lb ft).
Typical Example
7. Connect hose assemblies (13A) and (13B) to the lift cylinder with two seals (top) (14), four half-flanges (15), eight washers (16), and eight bolts (17).
Typical Example
8. Install tube (18) to the lift cylinder with two clips (19), two washers (20), and two bolts (21). Upper clip (19) must be installed so that the tube clears the light guard.
9. Connect the other end of hose assemblies (13A) and (13B) to the manifold on the radiator guard with two seals (bottom) (14), four half-flanges, eight washers, and eight bolts.
NOTE: The items not numbered are part of the lift cylinder lines group.
10. Insert harness assembly (22) through the tube on the lift cylinder and connect it to the wire assembly coming out of the radiator guard. Install the connector lock.
Typical Example
11. Install bracket (3) to the lift cylinder with four washers (20) and four bolts (24).
NOTE: Secure harness assembly behind bracket with strap (23).
12. Connect the orange wire from the harness assembly to the lamp assembly at location (A). Connect the black wire to ground on the guard assemblies with washer (25) and nut (7).
Typical Example
13. Remove the shipping bracket on the cylinder and install it in the up position. This provides clearance for the tilt cylinder hoses.
14. Repeat Steps 1 through 13 for the other side of the machine.
Installation of Trunnions
Necessary Parts
- * 2-7T2879 Trunnion Assembly
- * 28-7X0404 Bolt
Installation Procedure
Typical Example
Starting on one side:
1. Remove shipping cover (1) from the roller frame.
Typical Example
2. Install the guide pins in the track roller frame.
Typical Example
3. Start trunnion assembly (4) on the guide pins.
Typical Example
4. Install trunnion assembly (4) with 14 bolts (5).
5. Tighten bolts (5) to a torque of 1150 ± 150 N·m (850 ± 110 lb ft).
Repeat Steps 1 through 5 for other side of the machine.
Bulldozer Assembly (With Single Tilt)
Necessary Parts
Assembly Procedure
1. Raise and block the bulldozer blade in an upright position.
2. Install link assembly (12) to the blade assembly with cap (13), four bolts (14), and four nuts (15). Add shims (16) as necessary. Refer to the topic entitled Shimming Procedure in this Special Instruction for shimming instructions.
3. On each side, install connector assembly (1) to the blade with pin (2), retainer (4), and two bolts (5). Tighten bolts (5) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
4. On each side, install push arm to the blade with pin (7), retainer (9), and two bolts (10). Tighten bolts (10) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
5. On the left side, install brace group (11) to the blade with pin (3), retainer (4), and two bolts (5). Tighten bolts (5) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
(A) 1471 mm (57.9 in)
6. Adjust brace group (11) to distance (A). This is the neutral position.
NOTE: Apply a heavy coating of multipurpose type grease to the threaded surfaces on brace group (11).
NOTE: Adjust brace group to the neutral position (as shown in Step 6) before installation to push arm.
7. Install brace group to left side push arm with pin (8), retainer (9), and two bolts (10). Tighten bolts (10) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
8. On the right side, install tilt cylinder (6) to the blade with pin (3), retainer (4), and two bolts (5). Tighten bolts (5) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
9. Install the tilt cylinder to the right side push arm with pin (8), retainer (9), and two bolts (10). Tighten bolts (10) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
10. Install tube assembly (17) to the cylinder with seal (20), four bolts (18), and four washers (19). Tighten bolts (18) and four washers (19). Tighted bolts (18) to a torque of 50 ± 10 N·m (37 ± 7 lb ft). Secure tube (17) to the cylinder with bolt (21) and washer (22). Tighten bolt (21) to a torque of 120 ± 20 N·m (90 ± 15 lb ft).
11. Insert two hose assemblies (23) into the link assembly.
NOTE: Assemble plates (25) with the part number visible.
12. Connect the hose assemblies on the blade end of the link to the under side of plate (25) with two seals (20), four flanges (lengthwise to plate) (24), eight washers (19), and eight bolts (26). Tighten bolts (26) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
(A) Head end. (B) Rod end.
13. On the machine end of link assembly (12), connect the other ends of hose assemblies (23) to the under side of plate (25) with two seals (20), four flanges (24), eight washers (19), and eight bolts (26). Tighten bolts (26) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
14. Install plate (25) to the link assembly with four washers (22) and four bolts (21). Tighten bolts (21) to a torque of 120 ± 20 N·m (90 ± 15 lb ft). Torque both ends together at the same time after hoses have been run thru and properly aligned.
(A) Head end. (B) Rod end.
15. Connect hose assembly (27) and hose assembly (28) to plate (25) (blade end) with two seals (20), four flanges (24), eight washers (19), and eight bolts (26). Tighten bolts (26) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
16. Install the other end of hose assemblies (27) and (28) to the tilt cylinder with two seals (20), four flanges (24), eight washers (19), and eight bolts (26). Tighten bolts (26) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
17. Install guard (29) to the tilt cylinder with four washers (30) and four bolts (31). Tighten bolts (31) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
18. Install guard (32) to the blade side of the link assembly with four washers (33), two bolts (35), and two nuts (34). Tighten bolts (35) to a torque of 240 ± 40 N·m (175 ± 30 lb ft).
NOTE: Assemble bolts (35) toward blade.
Installation of Bulldozer Assembly
1. Block the push arms to the height of the machine's trunnions.
2. Move the machine into the push arms.
3. On each side, install cap (39) on push arm (38) with shims (42), two bolts (40), and two nuts (41). Refer to the topic entitled Shimming Procedure in this Special Instruction for shimming instructions.
4. Install link assembly (12) to the machine trunnion with shims (16), cap (13), four bolts (14), and four nuts (15). Refer to the topic entitled Shimming Procedure in this Special Instruction for shimming instructions.
5. Install the lift cylinders to blade with caps (44), shims (45), bolts (46), and nuts (47). Refer to the topic entitled Shimming Procedure in this Special Instruction for shimming instructions.
NOTE: Items 44, 45, 46, and 47 are part of lift cylinder
(A) Head end. (B) Rod end.
6. With the 90° elbow at the radiator guard port, connect hose assembly (36) and hose assembly (37) to the link assembly (machine end) with two seals (20), four flanges (24), eight washers (19), and eight bolts (26). Tighten bolts (26) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
NOTE: Remove shipping covers from the working ports on the manifold.
7. Connect hose assembly (36) and hose assembly (37) to manifold with two seals (20), four flanges, eight washers, and eight bolts. Tighten bolts to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
NOTE: The items not numbered are part of the lift cylinder lines group.
8. Install guard (38) to the link assembly (machine end) with four washers (33), two bolts (35), and two nuts (34). Tighten bolts (35) to a torque of 240 ± 40 N·m (175 ± 30 lb ft).
9. Check oil in hydraulic tank and fill if necessary. Cycle cylinders full stroke in both directions to purge air from lines and cylinders. Refill hydraulic tank to full mark.
10. After the assembly is complete, get the machine ready for use as shown in the machine's Operation & Maintenance Manual.
Bulldozer Assembly (With Dual Tilt)
Necessary Parts
Assembly Procedure
Illustration 1. (A) Vertical centerline of bulldozer blade.
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Do not torch or weld on painted areas. The effect of gasses from burned paint is a danger to the person doing the cutting or welding. |
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1. Raise and block the bulldozer blade in an upright position.
2. Clean all surfaces where parts are to be installed, including removal of paint from mating surfaces.
3. Locate six blocks (1) as shown in Illustration 1. Weld blocks (1) to the back of the blade with a 6 mm (.24 in) fillet weld all around each.
4. Locate two angles (2), two angles (3), and one angle (4), as shown in illustration 1. Weld the plates to the back of the blade with a 6.0 mm (.24 in) fillet weld. Weld at five places along both sides of each of the plates.
5. Secure one plate (5) at each end of the angles (2), (3), and (4) with a 5 mm (.20 in) fillet weld.
Illustration 2. Section A-A
(Y) Back side of bulldozer blade. (Z) Bottom edge of bulldozer blade.
Typical Example.
6. Secure two tube assemblies-LH (7) to blocks (1) with three clamps (8), six washers (9), and six bolts (10).
Typical Example.
7. Connect two tube assemblies-RH (11) to tube assemblies (7) with two seals (12), four flanges (13), eight washers (9), and eight bolts (15). Tighten bolts (15) to a torque of 50 ± 10 N·m (37 ± 7 lb ft)
Secure tube assemblies (11) to blocks (1) with three clamps (8), six washers (9), and six bolts (10).
8. On each side, install connector assembly (16) using pin (17), retainer (19), and two bolts (20). Tighten bolts (20) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
9. On each side, install push arm to blade with pin (21), retainer (23), and two bolts (24). Tighten bolts (24) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
10. Install tilt cylinder-RH (25) to the blade with pin (18), retainer (19), and two bolts (20). Tighten bolts (20) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
11. Install tilt cylinder-RH (25) to the right hand push arm with pin (22), retainer (23), and two bolts (24). Tighten bolts (24) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
12. Install tilt cylinder-LH (26) to blade with pin (18), retainer (19), and two bolts (20). Tighten bolts (20) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
13. Install tilt cylinder-LH (26) to the left hand push arm with pin (22), retainer (23), and two bolts (24). Tighten bolts (24) to a torque of 700 ± 90 N·m (515 ± 65 lb ft).
14. Install link assembly (27) to the blade assembly with cap (28), four bolts (29), and four nuts (30). Add shims (31) as necessary. Refer to the topic entitled Shimming Procedure in this Special Instruction for shimming instructions.
15. On each cylinder, install tube assembly (32) with seal (33), four washers (9), and four bolts (34). Tighten bolts (34) to a torque of 50 ± 10 N·m (37 ± 7 lb ft). Secure tube (32) to each cylinder with washer (35) and bolt (36). Tighten bolt (36) to a torque of 120 ± 20 N·m (88 ± 15 lb ft).
(A) Rod end. (B) Head end.
16. On the left side, connect hose assemblies (37) to tube assemblies on the blade [end (A) to the lower tube assembly and end (B) to the top tube assembly]. Connect hose assemblies (37) with two seals (33), four flanges (38), eight washers (9), and eight bolts (39).
17. Connect the other end of hose assembly (37) [end (A) coming from the lower tube assembly] to the rod end of the left hand tilt cylinder with seal (33), two flanges (38), four washers (9), and four bolts (39).
Connect the other end of hose assembly (37) [end (B) coming from the top tube assembly] to the head end of the left hand tilt cylinder with seal (33), two flanges (38), four washers (9), and four bolts (39).
18. Install guard assembly-LH (40) to the left tilt cylinder with four washers (41) and four bolts (42).
(43D) 9U9268 Tube Assembly (RH Rod End Connection).
(43E) 9U9268 Tube Assembly (RH Head End Connection).
(44F) 9U9267 Tube Assembly (LH Rod End Connection).
(44G) 9U9267 Tube Assembly (LH Head End Connection).
Illustration 3.
Machine end of link assembly.
19. Put tube assemblies (43D) and (44F) in position as shown. (See Illustration 3 for dimensions). Secure tube assemblies (43D) and (44F) to the link assembly with three clamps (47) and three bolts (15) as shown.
20. Put tube assemblies (43E) and (44G) in position as shown. (See Illustration 3 for dimensions.)
21. Secure tube assemblies (43E) and (44G) to the link assembly with three clamps (47) and three bolts (15).
22. Secure tube assemblies (43E) and (44G) to the link assembly at the bulldozer blade end with clamp (48), washer (9), and bolt (49).
23. Secure tube assemblies (43E) and (44G) to the link assembly at the machine end with clamp (48), washer (9), and bolt (49).
24. Install guard assembly (50) to link assembly with three washers (51) and three bolts (52).
25. Connect hose assembly (53) [end (A)] to tube assembly (43D) with seal (33), two flanges (38), four washers (9), and four bolts (39).
NOTE: Attach the 60 degree stem to the link assembly for both hose assemblies (53) [(A) and (B)].
Connect the other end of hose assembly (53) to the rod end of the right side tilt cylinder with seal (33), two flanges (38), four washers (9), and four bolts (39).
26. Connect hose assembly (53) [end (B)] to tube assembly (43E) with seal (33), two flanges (38), four washers (9), and four bolts (39).
Connect the other end of hose assembly (53) to the head end of the right hand tilt cylinder with seal (33), two flanges (38), four washers (9), and four bolts (39).
27. Connect hose assembly (54) and hose assembly (55) to tube assemblies (45) and (43) respectively with two seals (33), four flanges (38), eight washers (9), and eight bolts (39).
Connect the other end of hose assembly (54) to the upper tube assembly (on blade) with seal (33), two flanges (38), four washers (9), and four bolts (39).
Connect the other end of hose assembly (55) to the lower tube assembly (on blade) with seal (33), two flanges (38), four washers (9), and four bolts (39).
28. Install plate assembly (56) and (56A) to the link assembly with ten washers (35) and ten bolts (36).
29. Install guard assembly (57) to the right side tilt cylinder with four washers (41) and four bolts (42).
Installation of Bulldozer Assembly
Typical Example.
1. Block the push arms to the height of the machine's trunnions.
2. Move the machine into the push arms.
Typical Example.
3. On each side, install cap (59) on push arms (58) with shims (62), two bolts (60), and two nuts (61). Refer to the topic entitled Shimming Procedure in this Special Instruction for shimming instructions.
4. Install link assembly (27) to machine's trunnion with shims (31), cap (28), four bolts (29), and four nuts (30). Refer to the topic entitled Shimming Procedure in this Special Instruction for shimming instructions.
5. On the machine side of the link assembly, connect: hose assembly (63) to tube assembly (44F), hose assembly (65) to tube assembly (43D), hose assembly (65A) to tube assembly (44G), and hose assembly (66) to tube assembly (43E). Connect the four hose assemblies to the tube assemblies using four seals (33), eight flanges (38), sixteen washers (9), and sixteen bolts (39).
NOTE: Remove the shipping covers from the working ports on the radiator guard.
6. Connect hose assemblies (63), (65), (65A) and (66) to the manifold on the radiator guard, using four seals, eight flanges, sixteen washers, and sixteen bolts.
NOTE: The items not numbered are part of the tilt cylinder lines group.
7. Install guard assembly (67) to link assembly with three washers (35) and three bolts (36).
8. Install lift cylinders to blade with caps (68), shims (69), bolts (70) and nuts (71). Refer to the topic entitled Shimming Procedure in this Special Instruction for shimming instructions.
NOTE: Item 68, 69, 70, and 71 are part of lift cylinder.
9. Check the oil level in the hydraulic oil supply tank and fill if necessary. Cycle cylinders full stroke in both directions to purge air from lines and cylinders. Refill hydraulic oil supply tank to full mark.
10. After the assembly procedure is complete, get the machine ready for use as shown in the machine's Operation & Maintenance Manual.