TM 5-1940-322-24
0161 00
ENGINE VALVE TAPPETS MAINTENANCE (Contd)
ADJUSTMENT (Contd)
NOTE
Perform adjustment of the following tappets with cylinder
number 1 at TDC position plus one 360 clockwise turn.
Valve tappet clearance is optimal when a slight drag is felt on
feeler gauge being used.
The intake valve rocker lever clearance should be adjusted to
0.010 in. (0.25 mm). The exhaust valve rocker lever clearance
should be adjusted to 0.020 in. (0.51 mm).
6.
Loosen nut (5) on adjusting screw (4) and rotate screw until feeler gauge (7) is snug between rocker
arm (6) and valve stem cap (8) of valve being adjusted.
7.
Remove feeler gauge (7) from valve stem cap (8) and rocker arm (6). Tighten nut (5) to 18 lb-ft
(24 Nm).
CYLINDER
INTAKE VALVE (I)
1
Do not set
Do not set
2
Do not set
Set
3
Set
Do not set
4
Do not set
Set
5
Set
Do not set
6
Set
Set
I
I
I
E
E
E
CYLINDER 5
CYLINDER 3
CYLINDER 1
CYLINDER 6
CYLINDER 4
CYLINDER 2
0161 00-8