Power Steering Pump Replacement

TM 9-2320-363-34-1 · Chapter 7 — Steering Maintenance

This task covers: a. Removal b. Cleaning c. Inspection d. Installation

Tools and Special Equipment:                            References:

Shop Equipment, SC 4910-95-CL-A31                       TM 9-2320-363-20
Tool Kit, SC 5180-90-CL-N05

Materials/Parts:                                        Equipment Condition:

Ring, Seal        P/N ER-8913-041                       Reference              Condition Description
(M915A2 and M916A1)
                                                        TM 9-2320-363-20       Vehicle Blocked
Gasket (All except P/N 8929299
M915A2 and M916A1)                                      TM 9-2320-363-20       Power Steering Reservoir
                                                                               Drained
Washer, Lock (6)
Oil, Lubricating        Appendix B, Item 37

                                                  NOTE
                         Perform step 1 only if gear case cover is to be removed.

1.      REMOVE SCREW (1) AND CLAMP (2) FROM GEAR CASE COVER (3).

2.      DISCONNECT STEERING GEAR HOSE (4) AND POWER STEERING RESERVOIR HOSE (5)
        FROM POWER STEERING PUMP (6).

3.      REMOVE SIX CAPSCREWS (7) AND SIX LOCK WASHERS (8) FROM POWER STEERING PUMP
        (6). DISCARD LOCK WASHERS.

4.      REMOVE POWER STEERING PUMP (6) FROM GEAR CASE COVER (3).

5.      REMOVE POWER STEERING DRIVE COUPLING (9) FROM AIR COMPRESSOR DRIVE GEAR
        (10).

6.      REMOVE SEAL RING (11) (DDEC II) OR GASKET (11.1) (DDEC Ill) FROM POWER STEERING
        PUMP (6). DISCARD SEAL RING OR GASKET.

        Use general cleaning methods to clean all parts (page 2-30).

        Inspect all parts for wear or damage.

7-2    Change       1

1. APPLY OIL AND INSTALL NEW SEAL RING (11) (DDEC II) OR NEW GASKET (11.1) (DDEC III) ON POWER STEERING PUMP (6).

Aline power steering drive coupling (9) on air compressor drive gear and power steering pump gear properly. Failure to do so may cause damage to engine components.

2. INSTALL POWER STEERING DRIVE COUPLING (9) ON AIR COMPRESSOR DRIVE GEAR (10) AND POWER STEERING GEAR (12).

3. INSTALL POWER STEERING PUMP (6) ON GEAR CASE COVER (3).

4. INSTALL SIX NEW LOCK WASHERS (8) AND SIX CAPSCREWS (7) ON POWER STEERING PUMP (6). TIGHTEN CAPSCREWS TO 22-28 LB-FT (30-38 N.m) USING CRISSCROSS PATTERN STARTING WITH BOTTOM-LEFT-CORNER CAPSCREW.

5. IF DISCONNECT, CONNECT STEERING GEAR HOSE (4) AND POWER STEERING RESERVOIR HOSE (5) TO POWER STEERING PUMP (6).

6. IF REMOVED, INSTALL CLAMP (2) AND SCREW (1) ON GEAR CASE COVER (3).

Fill power steering reservoir (TM 9-2320-363-20).

Change 1 7-3