TM-9-2320-361-34
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
MAY 1992
TM-9-2320-361-34 - Page 77 of 764
TM 9-2320-361-34
3-7. ROCKER ARMS AND PUSHRODS MAINTENANCE (Contd)
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
WARNING
Disconnect battery ground cable prior to performing valve adjust-
ment procedure. Failure to do so may cause injury to personnel.
Disconnect battery ground cable (TM 9-2320-361-20).
NOTE
The intake valve is the front valve and the exhaust valve is the
rear valve in each cylinder.
Cylinders are numbered from the front of the truck to the rear.
Assistant will help with this procedure.
Remove radiator (TM 9-2320-361-20).
Rotate crankshaft bolt (1) clockwise until rocker arm (2), No. 1 cylinder intake valve, is fully open.
Adjust valves to proper clearance. Refer to table 3-2, Valve Clearance Limits, for measurements.
Perform steps 5 through 8.
Table 3-2. Valve Clearance Limits
CYLINDER
NUMBER
1
2
3
4
5
6
VALVES ADJUSTED
IN STEP 4
E
I AND E
I
E
I
VALVES ADJUSTED
IN STEP 11
I
E
I
I AND E
E
VALVE CLEARANCE SETTING
I = Intake valve gap 0.010 in. (0.254 mm)
E = Exhaust valve gap 0.025 in. (0.635 mm)
NOTE
All rocker levers are adjusted the same way.
Loosen nut (6) and turn adjustment screw (5) two full turns counterclockwise.
Place feeler gage between rocker arm head (4) and valve stem (7).
Tighten or loosen adjustment screw (5) until a slight drag is felt on feeler gage.
Hold adjustment screw (5) stationary and tighten nut (6).
When all valves in step 4 are adjusted, perform steps 10 and 11.
Rotate crankshaft bolt (1) 360° clockwise until rocker arm (3), No. 6 cylinder intake valve, is
fully open.
Adjust remaining valves to proper clearance. Refer to table 3-2, Valve Clearance Limits, for
measurements. Repeat steps 5 through 8 to adjust remaining valves.
3-26
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