Installation of 11SU (S/N: 8PP) and 11U (S/N: 8RP) Bulldozer with Dual Tilt Cylinder {6050} Caterpillar

Track-Type Tractor

D11T (S/N: AMA1-UP; JEL1-UP)

Introduction

This Special Instruction provides the information that is necessary to install the lift cylinder. The instruction also includes the proper procedure for the installation of the 11SU and 11U Bulldozer with dual tilt cylinders.

Refer to the necessary parts lists in each section.

After assembly is completed, prepare the machine for service. Refer to the Operation and Maintenance Manual for proper machine preparation.

Do not perform any procedure that is outlined in this publication until you have read the information and you understand the information. Do not order any parts until you have read the information and you understand the information.

Reference: Service Manual,Parts Book, Operation and Maintenance Manual.

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Do not attempt to assemble this machine until you read and you understand the assembly instructions. Improper assembly procedures could result in injury or death.

Note: No oil or lubricant is recommended on new fasteners. When fasteners are reused after being used in the field, the fasteners should be cleaned and lightly oiled before assembly. Instructions are given when lubrication is required.

Approximate Weights

Groups

The following table may be used to reference the groups of the parts that are listed in the tables of necessary parts. This table is for use by Caterpillar Dealers.

Shim Adjustment For the Push Arm Assembly

Illustration 1	g00527797

1. Remove all shims from assembly (1).

2. Install push arm assembly (1) and cap (2) on trunnion (3) without the shims. Tighten the bolts until the bolts are snug. Tighten the bolts to 5 percent of the specified torque or 50 N·m (37 lb ft). Maintain an equal distance at location (A) and (B) of cap (2).

3. Insert as many shims as possible into spaces (A) and (B) between the cap and the assembly.

   Note: The number of shims at space (A) must be within one shim of the shims at space (B). For example, if space (A) has eight shims, space (B) must have seven, eight, or nine shims.

4. Add one more shim to space (A) and one more shim to space (B).

5. Tighten the cap to the proper torque.

6. This should allow the assembly to move freely on the trunnion and within the specified tolerance ( 0.25 mm (0.010 inch) minimum).

Note: It may be necessary to remove one or more shims after a short time. This “Wear In” is due to normal variations in the surface or the thickness of the paint.

Installation of Lift Cylinders

Necessary Parts

Installation Procedure

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Illustration 2	g00531806

1. Tie the rod end of the cylinder to the base of the cylinder. Tying will prevent the cylinder from extending during installation. Perform this procedure for both of the cylinders.
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   Illustration 3	g01502179

2. Connect four hose assemblies (2) to the manifold on top of the radiator guard with seals (6), flanges, washers, and bolts.

   Note: Items that are not numbered are part of the lift cylinder mounting group. These items are included with the machine.

3. Repeat Step 2 for the other side of the machine.
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   Illustration 4	g06048151

4. Install plate (1) with four bolts (4), and four washers (5). Tighten bolts (4) to a torque of 70 ± 15 N·m (51 ± 11 lb ft).

5. Repeat Step 4 for the other side.

   Note: Items that are not numbered are part of the lift cylinder mounting group. These items are included with the machine.

Installation of Push Arm Trunnions

Necessary Parts

Installation Procedure

Illustration 5	g00624101

1. Remove shipping cover (A) from the track roller frame.

   Note: All mating surfaces must be clean. All mating surfaces must be free of paint. If necessary, clean these surfaces.

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   Illustration 6	g00528476

2. Remove plug (B). Push plate (C) inward to install the trunnion. Install plug (B) to the plate and tighten the plug to a torque of 82 ± 8 N·m (60 ± 6 lb ft).

   Note: Check the pivot shaft oil level for the correct oil level. Add oil, if necessary.

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   Illustration 7	g00528478

3. Install the guide pins (approximately 177.8 mm (7 inch) to 190.5 mm (7.5 inch) in length) into the track roller frame.

4. Start trunnion assembly (1) on the guide pins.
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   Illustration 8	g00528479

5. Install trunnion assembly (1) with 12 bolts (2). Tighten bolts (2) to a torque of 1050 ± 150 N·m (775 ± 111 lb ft) on both sides.

6. Repeat Steps 1 through 5 for the other side of the machine.

Assembly Of Bulldozer

Necessary Parts

Note: On blades and installation groups manufactured before April 2015, the clips and the mating hardware for the tubes that run on the back of the blade (Items 16, 35, and 40) were machined with English threads and also a two-bolt per clamp design. For these installations, the following hardware was used: (Qty 8) 4T-3981 Clips, (Qty 16) 5S-7379 Bolts, and (Qty 16) 8T-4896 Hard Washers.

Assembly Procedure

Illustration 9	g06051603
(14) 3G-6251 Guard As (RH) (15) 375-6056 Tube As (16) 491-8165 Clamp (17) 8J-3146 Clip (18) 9W-4041 Hose As (19) 375-6056 Tube As (20) 9W-5571 Guard As (LH) (21) 193-9159 Guard (22) 375-6055 Hose Guard (23) 347-7625 Hose As (24) 347-7626 Hose As (25) 347-7627 Hose As (26) 347-7628 Hose As (27) 347-7629 Tube As (28) 068-6405 Washer (29) 8C-3205 Half Flange (30) 8C-3206 Half Flange (31) 4J-0520 O-Ring Seal (32) 4J-5267 O-Ring Seal (33) 4L-6454 Bolt (34) 5P-2228 Bolt (35) 8T-4194 Bolt (36) 7X-0380 Bolt (37) 7X-0383 Bolt (38) 8T-5878 Bolt (39) 8T-2501 Bolt (40) 8T-4223 Hard Washer (41) 8T-4896 Hard Washer (42) 9B-7237 Bolt (A) Right-Hand Tilt Cylinder (Head End) (B) Right Hand Tilt Cylinder (Rod End) (C) Left-Hand Tilt Cylinder (Rod End) (D) Left-Hand tilt Cylinder (Head End)

Illustration 10	g02342887

1. Raise the blade to an upright position. Use pins (1) and appropriate supports. The blade must be in an upright position.

   Note: Clean out all bores on the blade.

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   Illustration 11	g06049342

2. Assemble four tube assemblies (27) to the blade. Use 8 clamps (4), 4 bolts (35), and 4 washers (40). Do not tighten the tube assemblies.
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   Illustration 12	g02330858

3. Install connector assembly (12) to left push arm assembly (75). Use spacers (68), pin (66), retainer (67), and bolts (63). Tighten bolts (63) to a torque of 700 ± 90 N·m (516 ± 66 lb ft).

   Note: Use a minimum of one spacer per side of each connector assembly and a maximum of three spacers per pin joint.

4. Repeat Step 3 for the other side of machine.
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   Illustration 13	g06394299

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   Illustration 14	g06394291

5. Install left push arm assembly (75) with connector assembly to the blade. Use pin (10), retainer (11), spacers (68), and bolts (7). Tighten bolts (7) to a torque of 700 ± 90 N·m (516 ± 66 lb ft).Refer to Illustration 13 and Illustration 14.

   Note: Use a minimum of one spacer per side of each connector assembly and use a maximum of three spacers per pin joint.

6. Repeat Step 5 for the other side of machine.
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   Illustration 15	g02345432

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   Illustration 16	g00535979

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   Illustration 17	g00535980

7. Install right tilt cylinder (61) to the blade. Use pin (6), two spacers (9), retainer (8), and two bolts (7). Spacers (9) are on each side of the cylinder rod. Tighten bolts (7) to a torque of 700 ± 90 N·m (516 ± 66 lb ft).

   Note: The tilt cylinder must be installed with the grease fitting on the rod end that faces downward.

   Note: Make sure that the narrow end of spacer (9) is facing the bearing.

8. Repeat Step 7 for the other side of the machine. Use the left tilt cylinder (62).
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   Both left and right tilt cylinders must be installed, as a pair, in either the push arm bracket lower hole or the push arm bracket upper hole. Never install one tilt cylinder in the push arm bracket upper hole and the other tilt cylinder in the push arm bracket lower hole. Failure to read and understand these assembly instructions could result in improper assembly procedures. Improper assembly procedures could result in injury or death. For additional information, please contact your Caterpillar Dealer.

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   Illustration 18	g00528492

   Note: The machines have a two-position tilt cylinder bracket on the push arms. The operator can adjust the angle of the bulldozer blade for the material that is being pushed.

9. The push arm bracket LOWER hole (A) is the standard position. This position allows the operator to pitch the blade forward and backward equally. If the cells on the back of the blade are aligned vertically, the blade is in the NEUTRAL position.

10. Hole (B) is the CARRY position. The movement of the blade into the PITCH BACK position is different from hole (A) to hole (B). Using hole (B) nearly doubles the distance of the pitch back of the blade that is obtained with hole (A).

    Note: The standard position is used for material that is harder to penetrate. The CARRY position is used to move larger amounts of material.

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    Illustration 19	g06050006

11. Install plate (82) to the inside lift cylinder bracket on the right-hand push arm with three bolts (87), six washers (84A), and three nuts (85).

12. Install grab handle (80) to plate (82) with three bolts (86), six washers (84), and three nuts (85A).

13. Repeat Step 11 and 12 to install plate (82) and grab handle (81) on the left-hand push arm.
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    Illustration 20	g00535488

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    Illustration 21	g02344512

14. Install right tilt cylinder (61) to the right push arm. Use pin (65), retainer (64), and bolts (63). Tighten bolts (63) to a torque of 700 ± 90 N·m (516 ± 66 lb ft).

    Note: Use an appropriate lifting device and appropriate pry bar to align the holes.

15. Repeat Step 14 for the other side of the machine. Use the left tilt cylinder (62).
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    Illustration 22	g06048810

16. Remove the shipping covers from the right tilt cylinder. Install right tube assembly (15) to the head end of the right tilt cylinder with seal (31), bolts (39) and bolts (33). Tighten bolts (39) and bolts (33) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).

17. Clamp right tube assembly (15) to right-hand tilt cylinder (61). Use clamp (17), bolts (34), and washers (40). Tighten bolts (34) to a torque of 120 ± 20 N·m (89 ± 15 lb ft).
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    Illustration 23	g02345416

18. Install link assembly (72) to the blade. Place the end that contains the identification plate toward the blade. The identification is stamped with the part number and the words BLADE END. Use cap (70), bolts (69), nuts (71), and shims (73). Tighten bolts (69) to a torque of 1050 ± 150 N·m (774 ± 111 lb ft). Refer to the topic “ Shim Adjustment for the Push Arm Assembly” in this Special Instruction for shimming instructions.
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    Illustration 24	g02331174

19. Connect hose assembly (18) to the rod end of right-hand tilt cylinder (61) with seal (31), flanges (30), washers (41), and bolts (42). Tighten bolts (42) to a torque of 50 ± 10 N·m (37 ± 7 lb ft). Connect hose assembly (18) to the head end of right-hand tilt cylinder (61) with seal (31), flanges (30), bolts (42), and washers (41). Tighten bolts (42) to a torque of 50 ± 10 N·m (37 ± 7 lb ft)
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    Illustration 25	g02331116

20. Connect hose assemblies (18) to tube assemblies (19) on the blade with flanges (29), washers (41), and bolts (42). Tighten bolts (42) to a torque of 50 ± 10 N·m (37 ± 7 lb ft)

    Note: The hose assemblies should be lined up as straight as possible with the tube assemblies.

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    Illustration 26	g02331373

21. Remove the shipping covers from the left tilt cylinder. Install left tube assembly (19) to the head end of the left tilt cylinder with seal (31), bolts (33), and bolts (39). Tighten bolts (33) and bolts (39) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).

22. Clamp left tube assembly (19) to left tilt cylinder (62). Use clamp (17), bolts (34), and washers (40). Tighten bolts (34) to a torque of 120 ± 20 N·m (89 ± 15 lb ft).
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    Illustration 27	g02331536

23. Connect hose assemblies (18) to tube assemblies (19) on the blade with seals (32), flanges (29), washers (41), and bolts (42). Tighten bolts (42) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).

24. Connect the other end of hose assemblies (18) to the head end of the left tilt cylinder and the rod end of the left tilt cylinder with seals (31), flanges (30), washers (41), and bolts (42). Tighten bolts (42) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
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    Illustration 28	g02332060

25. Connect hose assemblies (23), (24), (25), and (26) to tube assemblies (15) with seals (32), flanges (29), bolts (42), and washers (41). Tighten bolts (42) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
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    Illustration 29	g02343016

26. Install four guards (21) with eight bolts (38) and eight washers (28). Tighten bolts (38) to a torque of 700 ± 90 N·m (516 ± 66 lb ft).
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    Illustration 30	g02332193
    (22) Hose Guard (23) Hose Assembly (24) Hose Assembly (25) Hose Assembly (26) Hose Assembly (23) Seal O-Ring (A) Right-Hand Tilt Cylinder (Head End) (B) Right Hand Tilt Cylinder (Rod End) (C) Left-Hand Tilt Cylinder (Rod End) (D) Left-Hand tilt Cylinder (Head End)

27. Install hose guard (22) over hose assemblies (23), (24), (25), and (26). Connect hose assemblies (23), (24), (25), and (26) to the bulldozer valve with seals (32).
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    Illustration 31	g06048819

28. Install guard assembly (14) to right-hand cylinder (61) with washers (28) and bolts (36) on the front of the tilt cylinder guard. Install washers (28) and bolts (37) on the rear of the tilt cylinder guard. Tighten bolts (36) and bolts (37) to a torque of 700 ± 90 N·m (516 ± 66 lb ft).
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    Illustration 32	g06048827

29. Install guard assembly (20) to left tilt cylinder (62) with washers (28) and bolts (36) on the front of the tilt cylinder guard. Install washers (28) and bolts (37) on the rear of the tilt cylinder guard. Tighten bolts (36) and bolts (37) to a torque of 700 ± 90 N·m (516 ± 66 lb ft).
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    Illustration 33	g00528498

30. Install connector (4) to the blade with pin (1), retainer (2), and bolts (3) on both sides. Tighten bolts (3) to a torque of 120 ± 20 N·m (88 ± 15 lb ft).

Bulldozer Installation

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Illustration 34	g00528485

1. Block the push arms to the height of the trunnions.

2. Remove nuts (78), bolts (77), caps (76), and shims (79) from the push arms (both sides).

3. Move the machine into the push arms. Turn off the engine.
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   Illustration 35	g00528486

4. Install cap (76) to right-hand push arm (74) with shims (79), bolts (77), and nuts (78). Tighten bolts (77) to a torque of 2100 ± 250 N·m (1549 ± 184 lb ft). Refer to the topic “ Shim Adjustment for the Push Arm Assembly” in this Special Instruction for shimming instructions.

   Note: Position cap (76) so the side marked outside is to the outside of the machine.

5. Repeat step 4 for the other side.
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   Illustration 36	g00528487

6. Fasten left lift cylinder and right lift cylinder to the blade with pins (5), retainers (2), and bolts (3). Tighten bolts (3) to a torque of 120 ± 20 N·m (88 ± 15 lb ft).
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   Illustration 37	g00528488

7. Install link (72) to the trunnion with cap (70), shims (73), bolts (69), and nuts (71). Refer to the topic “ Shim Adjustment for the Push Arm Assembly” in this Special Instruction for shimming instructions. Tighten bolts (69) to a torque of 1150 ± 150 N·m (774 ± 111 lb ft).

   Note: Hoses are installed on link (72) while the link is on the ground. Lift link (72) into place. Then install the hose assemblies to the proper ports on the radiator guard.

8. Check the oil in the hydraulic tank. If necessary, fill the hydraulic tank. Cycle the cylinders by a full stroke. Cycle in both directions to purge air from lines and cylinders. Refill the hydraulic tank to the "FULL" mark.

9. After assembly is complete, prepare the machine for operation. Refer to the Operation and Maintenance Manual for proper machine preparation.

Calibration Procedure For the Lift Cylinder Sensors and the Electrohydraulic Solenoids

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Personal injury or death can result from not following the proper procedures. To avoid the possibility of injury or death, follow the established procedure.

Note: Machine performance will besignificantly affected if ANY of the calibration procedures are omitted.

After installation of the bulldozer, the lift cylinders, and the ripper is completed, the following sensors and Electrohydraulic solenoids must be calibrated. Calibrate the sensors and the solenoids in the sequence that is specified below.

Note: The lift cylinder sensors only apply if the machine is equipped with auto carry.

• Lift cylinder position sensors

• Blade raise/lower solenoids

• Blade tilt left/right solenoid

• Ripper shank raise/lower solenoid

• Ripper shank in/out

The calibrations can be done with a Laptop computer. Use Caterpillar Electronic Technician software version 2.3 or higher.

Turn the ignition key to the ON position. Machines that have not been calibrated will display the following error.

• All EIC Sol. Out of Cal (CID 1298; FMI 13)

When one solenoid has been calibrated, the monitoring system will display the following individual errors.

• Right lift cylinder position sensor (CID 0869; FMI 13)

• Left lift cylinder position sensor (CID 0870; FMI 13)

• Blade raise solenoid (CID 1198; FMI 13)

• Blade lower solenoid (CID 1197; FMI 13)

• Blade tilt left solenoid (CID 498; FMI 13)

• Blade tilt right solenoid (CID 497; FMI 13)

If a ripper is installed, the monitoring system will display the following errors.

• Ripper shank raise solenoid (CID 889; FMI 13)

• Ripper shank lower solenoid (CID 888; FMI 13)

• Ripper shank in solenoid (CID 886; FMI 13)

• Ripper shank out solenoid (CID 887; FMI 13)

When the calibrations and a keyoff/keyon cycle have been performed, all the errors should become inactive. However, the errors can still be viewed from the monitoring system as logged events. The logged events can be cleared from the memory of the Electronic Control Module. Use the Caterpillar electronic technician.

Standard Torque for Fasteners