CAT + Caterpillar 730C2 EJ Ejector Truck Service Repair Manual

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Product: EJECTOR TRUCK

Model: 730C2 EJ EJECTOR TRUCK 2L8

Configuration: 730C2 Ejector Articulated Truck 2L800001-UP (MACHINE) POWERED BY C13 Engine

Disassembly and Assembly

725C2, 730C2 Ejector Articulated Trucks - Machine Systems

Media

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Steering Cylinder - Remove and Install

SMCS - 4303-010

Removal Procedure

1

Start By:

a. Connect the steering frame lock.

b. Release the hydraulic system pressure.

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.

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.

1

1. Use suitable cribbing in order to support front fender (1).

2. Remove bolts (2). Remove deflector (3).

3

3. Remove bolts (4). Use two people in order to remove support assembly (5). The weight of support assembly (5) is approximately 29 kg (65 lb).

4

4. Disconnect grease hose assembly (6). Remove bolt (7). Disconnect hose assemblies (8).

5

5. Install Tooling (A).

Illustration 6

6. Remove bolt (9) and the washer.

Illustration 7

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7. Use suitable cribbing, Tooling (B), and Tooling (C) in order to remove pin (10) (not shown).

Illustration 8

8. Remove face seals (11).

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9

9. Remove O-ring seals (12).

Illustration 10

10. Attach a suitable lifting device and Tooling (E) to Tooling (A) and steering cylinder (13). The weight of steering cylinder (13) is approximately 50 kg (110 lb).

Illustration 11

11. Remove bolt (14) and the washer.

Illustration 12

Typical Example

12. Place a suitable wedge between Tooling (C) and the frame of the machine in order to align Tooling (C) with pin (15). Use Tooling (B) and Tooling (C) in order to remove pin (15).

Illustration 15

15. Remove O-ring seals (17).

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Illustration 16

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Illustration 17

Typical Example

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16. Place a suitable wedge between Tooling (D) and the frame of the machine in order to align Tooling (D) with bearing (18). Use Tooling (D) in order to remove bearing (18).

Disassembly and Assembly Information

Table 2

Required Tools

Cylinders equipped with lock valves can remain pressurized for very long periods of time, even with the hoses removed.

Failure to relieve pressure before removing a lock valve or disassembling a cylinder can result in personal injury or death.

Ensure all pressure is relieved before removing a lock valve or disassembling a cylinder.

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.

Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement.

Illustration 18

(1) Tighten the nut to a torque of 28 ± 5 N·m (21 ± 4 lb ft).

(2) Tighten the bolt to a torque of 1600 ± 200 N·m (1180 ± 150 lb ft). Replace a bolt that has been loosened or removed with a new bolt. Install the bolt with threads that are clean and free of lubricant.

(3) Tighten the locknut to a torque of 8 ± 1.5 N·m (71 ± 13 lb in).

(4) Apply Tooling (J) to the threads and tighten the head to a torque of 600 ± 130 N·m (440 ± 100 lb ft).

(5) Use Tooling (N) in order to remove the bearing. Use Tooling (F) in order to install the bearing.

(6) Lubricate the sealing lip lightly with the lubricant that is being sealed.

(7) Apply Tooling (H) to the wiper seal groove prior to installation.

Installation Procedure

Table 3

Required Tools

Illustration 19

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Illustration 20

Typical Example

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1. Place a suitable wedge between Tooling (D) and the frame of the machine in order to align Tooling (D) with bearing (18). Use Tooling (D) in order to install bearing (18).

Illustration 21

2. Install O-ring seals (17).

Illustration 22

3. Install face seals (16).

Illustration 23

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4. Attach a suitable lifting device and Tooling (E) to Tooling (A) and steering cylinder (13). Position steering cylinder (13). The weight of steering cylinder (13) is approximately 50 kg (110 lb).

5. Install pin (not shown), washer (15) and bolt (14). Tighten bolt (14) to a torque of 240 ± 40 N·m (177 ± 30 lb ft). Strike the head of pin (15) with a suitable hammer and torque bolt (14) to a torque of 240 ± 40 N·m (177 ± 30 lb ft). Continue this procedure until bolt (14) maintains a torque of 240 ± 40 N·m (177 ± 30 lb ft). Recheck the torque of bolt (14) after the machine has been operated.

8. Install pin (not shown), washer and bolt (9). Tighten bolt (9) to a torque of 240 ± 40 N·m (177 ± 30 lb ft). Strike the head of pin (10) with a suitable hammer and torque bolt (9) to a torque of 240 ± 40 N·m (177 ± 30 lb ft). Continue this procedure until bolt (9) maintains a torque of 240 ± 40 N·m (177 ± 30 lb ft). Recheck the torque of bolt (9) after the machine has been operated.

10. Connect hose assemblies (8). Install bolt (7). Connect grease hose assembly (6).

11. Use two people in order to position support assembly (5). The weight of support assembly (5) is approximately 29 kg (65 lb). Install bolts (4).

31

12. Position deflector (3). Install bolts (2).

32

13. Remove the suitable cribbing from front fender (1).

End By:

a. Separate the steering frame lock.

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