TM-9-2320-272-24-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4
JUNE 1998
TM-9-2320-272-24-1 - Page 890 of 1015
TM 9-2320-272-24-1
3-192. WINDSHIELD WIPER CONTROL VALVE REPLACEMENT
THIS TASK COVERS:
a. Removal
b. Installation
INITIAL SETUP:
APPLICABLE MODELS
REFERENCES (TM)
All
TM 9-2320-272-10
Air reservoirs drained (TM 9-2320-272-10).
GENERAL SAFETY INSTRUCTIONS
Do not disconnect air lines before draining air
reservoirs.
TOOLS
General mechanic’s tool kit (Appendix E, Item 1)
EQUIPMENT CONDITION
rake set (TM 9-2320-272-10).
Parking b
TM 9-2320-272-24P
MATERIALS/PARTS
Lockwasher (Appendix D, Item 370)
Antiseize tape (Appendix C, Item 72)
Do not disconnect air lines before draining air reservoirs. Small
parts under pressure may shoot out with high velocity, causing
injury to personnel.
Tag air lines for installation.
1.
Remove setscrew (6) and remove knob (5) from shaft (4).
2.
Remove nut (7), lockwasher (8), and control valve (10) from instrument panel (9). Discard
lockwasher (8).
3.
Remove clamp (2) and disconnect wiper motor run delivery line (1) from adapter (3).
4.
Disconnect manifold tee supply line (14) from adapter (15).
5.
Remove clamp (12) and disconnect motor park delivery line (13) from adapter (11).
6.
Remove adapters (3), (15), and (11) from control valve (10).
If new wiper control valve is being installed, use fittings from
old valve.
Clean all male pipe threads and wrap with antiseize tape before
installation.
1.
Install adapters (3), (15), and (11) on control valve (10).
2.
Connect motor park delivery line (13) to adapter (11) with clamp (12).
3.
Connect manifold tee supply line (14) to adapter (15).
4.
Connect wiper motor run delivery line (1) to adapter (3) with clamp (2).
5.
Install control valve (10) on instrument panel (9) with new lockwasher (8) and nut (7).
6.
Install knob (5) on shaft (4) with setscrew (6).
3-526
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