Oil Relief Valve and Oil Regulator Valve Replacement

TM 9-2320-363-34-1 · Chapter 3 — Power Package Maintenance

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

Tools and Special Equipment:                        Equipment Condition:
Shop Equipment, SC 4910-95-CL-A31                   Reference              Condition Description
Tool Kit, SC 5180-90-CL-N05
                                                    Page 3-220             Oil Pan Removed
Materials/Parts:
Ring, Seal              P/N 23505891
Ring, Seal              P/N 23505892
Gasket                  P/N 5117269
Gasket                  P/N 8929347
Oil, Lubricating        Appendix B, Item 37

TM page 3-217

Illustration from TM 9-2320-363-34-1 (PDF page 293)

1. REMOVE TWO BOLTS (1) FROM CYLINDER BLOCK (2).

2. REMOVE OIL OUTLET TUBE ELBOW (3) FROM OIL OUTLET TUBE (4) AND REMOVE OUTLET TUBE (4) FROM OIL PUMP ASSEMBLY (5).

3. REMOVE AND DISCARD TWO SEAL RINGS (6 AND 7).

4. REMOVE AND DISCARD GASKET (8).

5. REMOVE TWO BOLTS (9) FROM OIL OUTLET TUBE ELBOW (3).

6. REMOVE OIL PRESSURE RELIEF VALVE (10) AND GASKET (11). DISCARD GASKET.

7. REMOVE TWO BOLTS (12) FROM CYLINDER BLOCK (2).

8. TAP OIL PRESSURE REGULATOR VALVE BODY LIGHTLY TO LOOSEN IT FROM GASKET (13) AND REMOVE OIL PRESSURE REGULATOR VALVE (14). DISCARD GASKET.

1. CLEAN ALL OLD GASKET MATERIAL FROM OIL PRESSURE REGULATOR VALVE BODY AND CYLINDER BLOCK MATING SURFACES.

2. USE GENERAL CLEANING METHODS TO CLEAN ALL PARTS (PAGE 2-30).

Inspect all parts for wear or damage. If parts are pitted or scored, replace.

TM page 3-218

Illustration from TM 9-2320-363-34-1 (PDF page 294)

CAUTION Do not interchange oil pressure regulator valve and oil pressure relief valve to prevent damage to equipment. Oil pressure regulator valve port opening is larger than oil pressure relief valve port opening. Oil pressure regulator valve is also identified by pin located farthest from outlet port.

1. INSTALL OIL PRESSURE REGULATOR VALVE (1) AND NEW GASKET (2) ON CYLINDER BLOCK (3).

2. INSTALL TWO BOLTS (4) AND TIGHTEN TO 22-28 LB-FT (30-38 N.m).

TM page 3-219

Illustration from TM 9-2320-363-34-1 (PDF page 295)

NOTE

Make sure all old gasket material has been removed from mating surfaces of oil pressure relief valve and elbow.

INSTALL NEW GASKET (5) AND OIL PRESSURE RELIEF VALVE (6) ON OIL OUTLET TUBE ELBOW(7). INSTALL TWO BOLTS (8) AND TIGHTEN TO 22-24LB-FT (30-38 N.m).

5. COAT TWO NEW SEAL RINGS (9 AND 10) WITH CLEAN ENGINE LUBRICATING OIL.

6. INSTALL SMALLER SEAL RING (9) ON ELBOW END OF OIL OUTLET TUBE (11) AND LARGER SEAL RING (10)ON PUMP END OF OIL OUTLET TUBE(11).

7. INSTALL LARGER DIAMETER END OF OIL OUTLET TUBE (11) IN OUTLET NECK OF OIL PUMP ASSEMBLY UNTIL OIL OUTLET TUBE(11) BOTTOMS IN BORE. INSTALL SMALLER DIAMETER END OF OIL OUTLET TUBE(11) IN OIL OUTLET TUBE ELBOW (7) UNTIL OIL OUTLET TUBE(11) BOTTOMS IN BORE.

9. INSTALL NEW GASKET (13) AND OIL OUTLET TUBE ELBOW ASSEMBLY (7) ON CYLINDER BLOCK (3).

10. INSTALL TWO BOLTS (14) AND TIGHTEN TO 22-24 LB-H (30-38 N.m).

NOTE Follow-on Maintenance:

Install oil pan (page 3-220).

TM page 3-220

Illustration from TM 9-2320-363-34-1 (PDF page 296)