TM 9-2320-302-34
0027 00-5
ROCKER ARM ASSEMBLIES MAINTENANCE - CONTINUED
0027 00
INSPECTION - CONTINUED
NOTE
Rocker arm bushing inside diameter is the same for each rocker arm (exhaust, intake, and injector). Exhaust
arm only is shown.
2.
Inspect rocker arm bushings (19) for excessive wear or scoring. Measure rocker arm bushing inside diameter. If diame-
ter is more than 1.4191 in (36.050 mm), replace rocker arm assembly.
NOTE
Rocker arms are not matched sets and each rocker arm may be replaced. The checks in step 3 through 5
apply to each rocker arm.
3.
Check each cam follower roller (20) for scoring, pitting or flat spots. If any of these conditions are evident, replace
defective rocker arm.
4.
Check side clearance between cam follower roller (20) and rocker arm. If more than 0.015 in (0.040 mm) maximum,
replace defective rocker arm.
5.
Ensure cam follower roller (20) turns freely on its pin. If roller does not turn freely, binds or if there is vertical move-
ment between roller and pin, replace defective rocker arm.
19
1.4191 in (36.050 mm)
0.015 in (0.040 mm)
20
8
