TM 9-2320-240-34-1
3-15. ROCKER LEVER HOUSING AND PUSH TUBES MAINTENANCE (Contd)
7.
Inspect push tube socket seat (2) for wear as follows:
a. Apply blue pigment to ball end of new adjusting screw (1).
b. Place ball end in socket seat (2) and rotate.
c. Replace push tubes (3) if 80% of area is not pigmented.
Inspect adjusting screw (1) for wear as follows:
8.
a. Using 0.25 in, (6.35 mm) radius gage, check ball end (4) of adjusting screw (1) for flat and out-of-
round areas. Discard adjusting screw (1) if ball end (4) is flat or out-of-round.
b. Thread new nut (5) full length of adjusting screw (1). Replace if adjusting nut (5) binds or strips
threads.
Inspect rocker lever housing (7) for cracks, breaks, and damaged threads. Replace rocker lever
9.
housing (7) if cracked, broken, or threads are damaged.
Inspect shaft bore (6) for scratches and wear. Measure shaft bore (6) at several places. Replace
10.
rocker lever housing (7) if shaft bore (6) is scratched or diameter exceeds 1.125 in. (28.58 mm).
11.
Inspect rocker lever shaft (9) for scratches. Measure outside diameter at several places for wear.
Replace rocker lever shaft (9) if scratched or outside diameter is less than 1.122 in. (28.50 mm).
12.
Remove two plugs (8) from rocker lever shaft (9). Check for clogged oil passages (10). Clean if oil
passages (10) are clogged.
Install plugs (8) on rocker lever shaft (9). Tighten plugs (8) 50-70 lb-ft (68-95 Nm). Mark ends of
13.
plugs (8) to indicate setscrew hole (11) position.
3-42
