TM-9-2320-260-34-1

TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; VOLUME 1 OF 2

JULY 1994
TM-9-2320-260-34-1

  TM-9-2320-260-34-1 - Page 82 of 657

TM
9-2320-260-34-1
3-12. OIL COOLER MAINTENANCE
THIS TASK COVERS:
a. Removal
d. Assembly
b. Disassembly
e. Installation
c. Cleaning and Inspection
INITIAL SETUP
APPLICABLE MODELS
All
TOOLS
General mechanic’s tool kit
(Appendix B, Item 1)
Engine oil cooler tester (Appendix B, Item 113)
Torque wrench, 3/8-in. dr.
(Appendix B, Item 4)
MATERIALS/PARTS
Nine lockwashers (Appendix D, Item 215)
Two gaskets (Appendix D, Item 65)
Two retaining rings (Appendix D, Item 341)
Two O-rings (Appendix D, Item 298)
Rubber bushing (Appendix D, Item 368)
Drycleaning solvent (Appendix C, Item 41)
Antiseize tape (Appendix C, Item 43)
Lubricating oil (Appendix C, Item 21)
Sealing compound (Appendix C, Item 38)
EFERENCES (TM)
TM 9-2320-260-10
TM 9-2320-260-20
TM 9-2320-260-34P-1
EQUIPMENT CONDITION
Cooling system drained (TM 9-2320-260-20).
GENERAL SAFETY INSTRUCTIONS
Keep fire extinguisher nearby when using
drycleaning solvent.
Compressed air source will not exceed 30 psi
(207 kPa).
Eyeshields must be worn when cleaning with
compressed air.
1. Remove four clamps (14), two hoses (15), and bypass tube (16) from thermostat housing (1) and oil
cooler (13).
2. Remove clamp (10) and radiator outlet hose (9) from oil cooler (13).
3. Remove clamp (12) and hose (11) from oil cooler (13).
4. Remove air compressor coolant line (2) and rubber bushing (3) from elbow (8). Discard rubber
bushing (3).
5. Remove five screws (7), lockwashers (6), oil cooler (13), and gasket (5) from cylinder block (4).
Discard lockwashers (6) and gasket (5).
1. Remove four screws (19), lockwashers (20), end cover (17), and gasket (21) from housing (25).
Discard lockwashers (20) and gasket (21).
2. Remove two retaining rings (22), O-rings (23), and element (27) from housing (25). Discard retaining
rings (22) and O-rings (23).
3. Remove elbow (8) and two plugs (18) from end cover (17).
4. Remove valve (26) and plug (24) from housing (25).
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