Counterbalance Valve Replacement and Repair

TM 9-2320-363-34-1 · Chapter 11 — Winch Maintenance

This task covers: a. Removal b. Disassembly c. Cleaning d. Inspection e. Repair f. Assembly

                    a. Installation

Applicable Configuration:                         Materials/Parts   (Cont):
M916A1 and M916A2                                 Packing (3)                 P/N 76511

Tools and Special Equipment:                      Packing                     P/N 2507-16-16

Shop Equipment, SC 4910-95-CL-A31                 Packing                     P/N SAE 11-20-16
Tool Kit, SC 5180-90-CL-N05
                                                  References:
Materials/Parts:                                  TM 9-2320-363-20
Kit, Parts                  P/N 58864 9863
                                                  Equipment Condition:
Packing                     P/N 58864 9962
                                                  Reference                   Condition Description
Washer, Lock (6)            P/N 1295
                                                  TM 9-2320-363-20            Winch Hydraulic Oil Tank
                                                                              Drained

1.    REMOVE SIX CAPSCREWS (1), SIX LOCK WASHERS (2), AND COVER (3). DISCARD LOCK
      WASHERS.

2. DISCONNECT THREE HOSES (4) AND REMOVE THREE ELBOWS (5) AND THREE PACKINGS (6). DISCARD PACKINGS.

3. DISCONNECT HOSE (7) FROM ELBOW (8).

4. REMOVE ELBOW (8), PACKING (9), BUSHING (10), AND PACKING (11). DISCARD PACKINGS.

5. REMOVE FOUR SCREWS (12), VALVE BODY (13), AND PACKING (14). DISCARD PACKING.

1. REMOVE VALVE (1) FROM VALVE BODY (2).

2. REMOVE AND DISCARD TWO BACKUP RINGS (3) AND PACKING (4).

3. REMOVE AND DISCARD BACKUP RING (5) AND PACKING (6).

4. REMOVE AND DISCARD PACKING (7) AND BACKUP RING (8).

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

Inspect all parts for wear or damage.

Use general repair methods to repair damaged parts (page 2-33).

1. INSTALL NEW BACKUP RING (1) AND NEW PACKING (2).

2. INSTALL NEW PACKING (3) AND NEW BACKUP RING (4).

3. INSTALL NEW PACKING (5) AND TWO NEW BACKUP RINGS (6) AS SHOWN.

4. INSTALL VALVE (7) IN VALVE BODY (8).

1. INSTALL NEW PACKING (1), VALVE BODY (2), AND FOUR SCREWS (3).

2. INSTALL NEW PACKING (4), BUSHING (5), NEW PACKING (6), AND ELBOW (7).

3. CONNECT HOSE (8) TO ELBOW (7).

4. INSTALL THREE NEW PACKINGS (9) AND THREE ELBOWS (10) AND CONNECT THREE HOSES (11).

5. INSTALL COVER (12), SIX NEW LOCK WASHERS (13), AND SIX CAPSCREWS (14).

Fill winch hydraulic oil tank (TM 9-2320-363-20).