TM 5-1940-322-24
0161 00
ENGINE VALVE TAPPETS MAINTENANCE (Contd)
ADJUSTMENT (Contd)
NOTE
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).
Perform adjustment of the following tappets with cylinder number
1 at TDC compression stroke (timing pin will engage).
Valve tappet clearance is optimal when a slight drag is felt on
feeler gauge being used.
4.
To adjust valve tappet clearance, loosen nut (9) on adjusting screw (8). Rotate screw (8) until feeler
gauge (11) is snug between rocker arm (10) and valve stem cap (7) of valve being adjusted.
5.
Remove feeler gauge (11) from valve stem cap (7) and rocker arm (10). Tighten nut (9) to 18 lb-ft
(24 Nm).
CYLINDER
INTAKE VALVE (I)
EXHAUST VALVE (E)
1
Set
Set
2
Set
Do not set
3
Do not set
Set
4
Set
Do not set
5
Do not set
Set
6
Do not set
Do not set
I
E
E
E
I
I
CYLINDER
CYLINDER
CYLINDER
CYLINDER
CYLINDER
CYLINDER
6
5
4
3
2
1
7
8
FEELER
GAUGE
9
11
10
0161 00-7
