CP/CS-323 VIBRATORY COMPACTORS VEHICLE SYSTEMS Caterpillar


Steering Valve

Usage:

Remove & Install Steering Valve

1. Using a screwdriver, remove steering wheel cap (1).

2. Remove nut (2) and steering wheel (3).

3. Remove clamp assembly (4).

4. Remove four bolts (5) and lower the steering valve down to the floor plate.

NOTE: Mark the hoses as to their location for assembly purposes.

5. Disconnect and cap five hose assemblies (6). Remove the steering valve.

NOTE: The following steps are for the installation of the steering valve.

6. Connect five hose assemblies (6).

7. Position the steering valve on the machine and install four bolts (5).

8. Install clamp assembly (4).

9. Install steering wheel (3) and nut (2).

10. Install steering wheel cap (1).

11. Check the hydraulic fluid level before operating the machine.

Disassemble Steering Valve

NOTE: The following story is from the V60D, V70D and V80D Lift Truck. While not an exact representation, it is typical for the CP/CS-323 Vibratory Compactor.

Start By:

a. remove steering valve


Typical Example. Steering valve illustrated is from the CP/CS-323 Vibratory Compactor


Typical Example

1. Remove hydraulic fittings (2) and spacer (1).

2. Mark the steering valve housing and covers for proper alignment during assembly.


Typical Example

3. Remove cover (3), shims (4) and spacer (6). Remove the shaft with spool (5) as an assembly.

4. Using a hammer and punch, Remove dowel (7).


Typical Example

5. Remove torsion bar (8) and the spacer from inside of the spool.


Typical Example

6. Position the spool and shaft vertically on a wooden block.

7. Slowly turn the shaft backward and forward until drive ring (13) falls free. Turn the shaft in a clockwise direction and lift the shaft out of the spool until the actuator ball is disengaged from the groove in the shaft. Remove shaft (12) and actuator ball (16).

8. Remove washer (wave spring) (11). Remove snap ring (9) with tool (A). Remove washer (14), bearing (10) and washer (15).


Typical Example


Typical Example

9. Remove the bolts and cover (19). Remove commutator ring (18), commutator (17) and washer (20) from under the commutator.


Typical Example

10. Remove retainer (21) and seal (22).


Typical Example

11. Remove manifold (23) and drive link (24).


Typical Example


NOTICE

Take extra care to not loosen or damage the springs and vanes.


12. Remove outer rotor (25). Remove the vanes and spring from inner rotor (26). Remove the inner rotor.


Typical Example

13. Remove spacer (27).


Typical Example

14. Using tool (B), remove seal (28) and ring (29) through the top of the cover.

15. Remove seal (30) from the bottom of the cover.

Assemble Steering Valve

1. Thoroughly clean all of the parts with solvent. Dry the parts with air. Inspect the parts for wear or damage. Replace as required.


NOTICE

Do not put oil on the parts before assembly. Keep the work area and all the parts clean.



Typical Example

2. Install washer (2), the bearing and washer (1). Install the snap ring on shaft (3) with tool (A).


Typical Example


NOTICE

Make sure the actuator ball is in the ball seat and not in the through hole opposite the ball seat.


3. Install spring (6) on spool (4). Install actuator ball (5) in the ball seat.


Typical Example

4. Install washer (wave spring) (7) over washer (2).

5. Install the shaft in the spool so the actuator ball (5) is aligned with the groove in the shaft.

6. Slowly push in and turn the shaft in a counterclockwise direction until the washer on the shaft makes contact with the spool.


NOTICE

The spool must be in the "NEUTRAL" position before installing the drive ring into the spool. The drive ring may be installed incorrectly if the spool is not in the "NEUTRAL" position.


7. Using torsion bar (8) as a gauge, (position the bar between the washer and the spool), put the spool in the center of its movement. This is the "NEUTRAL" position of the spool.

8. Install drive ring (9). Tilt the spool and let the drive ring slide into the spool and onto the shaft. Remove the torsion bar.

9. Install spacer (10).

10. Install the torsion bar. Align the hole in the torsion bar with the hole in the shaft and install dowel (11). Using a hammer and a punch, locate the dowel approximately 0.8 mm (0.03 in.) below the outside surface diameter of the shaft.

11. Install spacer (13).

12. Install the original thickness of shims (12).

13. Carefully slide the spool and shaft into the housing.

14. Install the ring with tool (B) through the top of the cover.

15. Install the seal in cover (14) until it is seated on the cover top surface.

16. Put clean grease on the seal. Install the seal in the groove on the bottom of the cover.

17. Install the cover using the identification marks put on the housing and cover at disassembly. Install the bolts and tighten to a torque of 25 ± 3 N·m (20 ± 2 lb.ft.).

18. Place the housing and spool on wooden blocks. While holding the shaft, turn the spool with drive link (15) until the end of the spool is even with the finished surface of the housing.

19. Remove the drive link. Align the groove in the end of the drive link with the pin in the torsion bar and install the drive link.

20. Measure the distance between the end of the spool and the housing with a feeler gauge. The end of the spool must be within 0.000 to 0.635 mm (0.0000 to 0.0025 in.) of the finished surface of the housing. Add or remove shims from between the cover and the washer to obtain the above specification.

21. Remove the drive link.

22. Place the housing and cover on wooden blocks. Install two 5/16"-18 NC guide pins in the housing.


NOTICE

Do not damage the finished surfaces of the spacer, inner and outer rotors, manifold, the commutator and the cover. The finished surfaces must be free of scratches.


23. Install spacer (16) with the grooved side of the spacer installed toward the housing.

24. Put clean hydraulic oil on the vanes and the inner rotor. Install the springs and vanes in the inner rotor. Install outer rotor (17) on inner rotor (18). Measure the difference in thickness of the inner and outer rotor. If the difference is more than 0.05 mm (0.002 in.), the rotors must be replaced.

25. Install the drive link in inner rotor (15) with the drive link groove aligned with the pin in the torsion bar. Install the inner rotor, vanes and the spring on the spacer.

26. Install outer rotor (17) over the inner rotor and onto the spacer.

27. Install manifold (19) on the rotors.

28. Install commutator ring (20) with the groove (slot) towards the manifold.

29. Install commutator (21) with the end of the drive link aligned with the elongated hole in the commutator and the counter sunk area of the commutator installed towards the cover.

30. Install seal (22).

31. Install the retainer over the seal.

32. Put a small amount of clean hydraulic oil on the commutator and the manifold.

33. Install washer (23) on the cover. Use clean grease to hold the washer in place. Install cover (24) and the washer making sure the pin in the cover is aligned with the hole at the center of the commutator.

34. Remove the guide pins. Install the bolts and tighten evenly to a torque of 25 ± 3 N·m (20 ± 2 lb.ft.) while the input shaft is turned.

End By:

a. install steering valve

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