TM-9-2320-272-24-4

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 4 OF 4

JUNE 1998
TM-9-2320-272-24-4

  TM-9-2320-272-24-4 - Page 312 of 836

TM 9-2320-272-24-4
5-44. TRANSMISSION CONTROL VALVE REPLACEMENT
THIS TASK COVERS:
a. Removal
b. Installation
INITIAL SETUP:
APPLICABLE MODELS
EQUIPMENT CONDITION
All
Low shift valve, low trimmer valve, and modulate
TOOLS
lockup valve removed (para. 5-43).
General mechanic’s tool kit (Appendix E, Item 1)
SPECIAL ENVIRONMENTAL CONDITIONS
Torque wrench (Appendix E, Item 146)
Work area clean and free from blowing dirt and
REFERENCES (TM)
TM 9-2320-272-24P
dust.
NOTE
Separate and tag screws for installation.
1.
Remove screw (4) and detent spring and roller (5) from control valve (2).
2.
Remove three screws (3) from control valve (2).
3.
Remove screw (1) from control valve (2).
4.
Remove fifteen screws (6) from control valve (2).
CAUTION
Do not tilt control valve to allow selector valve to drop out.
Selector valve may be damaged.
Remove items as an assembly and do not separate. Loose parts
inside will fall free, resulting in damage to control valve.
5.
Remove control valve (2), separator plate (7), and oil transfer plate (8) from transmission (11).
b. Installation
CAUTION
Do not tilt control valve to allow selector valve to drop out.
Damage to selector valve may result.
1.
Position oil transfer plate (8), separator plate (7), and control valve (2) on transmission (11) so pin
on detent lever (10) aligns with slot on selector valve (9).
2.
Install control valve (2) on transmission (11) with fifteen screws (6). Finger-tighten screws (6).
3.
Install control valve (2) with three screws (3). Finger-tighten screws (3).
4.
Install control valve (2) with screw (1). Finger-tighten screw (1).
5.
Position detent spring and roller (5) on control valve (2) with roller in notch of detent lever (10), and
install with screw (4).
6.
Tighten twenty screws (1), (3), (4), and (6) 9-11 lb-ft (12-15 N•m) in sequence shown.
5-306


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