TM 10-4320-307-24
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ROCKER LEVER HOUSING ASSEMBLY_ REPAIR /REPLACE(CONT).
8.
Visually inspect rocker levers (4) for cracks, un-
usual wear, or damaged threads: replace if nec-
essary.
9.
Inspect lever bushings (5) for cracks or pitting.
10.
Measure lever bushing (5) inside diameter while
installed. Bushing inside diameter should be
between 1.1245 inches (28.562 mm) and 1.286
inches (28.666 mm).
11.
If lever bushings are cracked, pitted, or worn
beyond tolerances, replace as follows:
a.
Place rocker lever (4) on block and insert
mandrel (6) into bore of lever bushing (5).
b.
Apply force of arbor press to mandrel (6) and
drive lever bushing (5) out of rocker lever
(4).
CAUTION
Make sure that oil holes in replacement bushings are properly aligned with oil passages in rocker
levers. Failure to do so will cause lubrication failure and severe engine damage.
c.
Press new lever bushing (5) into rocker levers, with oil holes aligned with rocker lever (4) oil passages using
mandrel and arbor press.
12.
Visually inspect adjusting screws and adjusting screw nuts for thread damage. Replace component if threads are
damaged.
13.
Inspect ball end of adjusting screws for scratches and wear. Check with a 0.25 inch (6.35 mm) radius gauge.
Replace adjusting screws if ball end is damaged.
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