ARMY TM 9-6115-673-13&P
AIR FORCE TO 35C2-3-512-1
(3) Remove bolt (Figure 5-5) and support with rocker arms attached.
(4) Remove valve inserts from valve stems so they don't get knocked off and lost.
(5) Remove intake rocker arm with locknut and adjusting screw from support.
(6) Remove exhaust rocker arm with locknut and adjusting screw from support.
(7) Remove push rods from cylinder head.
(8) If necessary, remove spring pin from cylinder head.
b. Inspection.
(1) Inspect components for nicks, cracks, scoring, corrosion, and other damage.
(2) Using a micrometer, measure outside diameter of rocker arm support shafts
[0.4685 - 0.4724 in. (11.9 -12 mm)].
(3) Using a micrometer, measure inside diameter of rocker arms
[0.4738 - 0.4764 in. (12.034 - 12.1 mm)].
(4) Measure push rod length and distortion:
(a) Length - 5.110 - 5.126 in. (129.8 - 130.2 mm)
(b) Distortion - 0.0020 - 0.0118 in. (0.05 - 0.3 mm)
(5) Replace defective parts.
c. Installation.
(1) If removed, install spring pin (Figure 5-5) in cylinder head.
(2) Insert push rods into cylinder head.
(3) Install exhaust rocker arm on support with adjusting screw and locknut.
(4) Install intake rocker arm on support with adjusting screw and locknut.
(5) Place valve inserts on valve stems.
(6) Position support, with rocker arms attached, in cylinder head ensuring spring pin is
aligned with hole in support.
(7) Secure support in cylinder head with bolt. Torque bolt to 15 -17 lbs-ft (20-23 Nm).
(8) Adjust valve clearance, refer to paragraph 4.12.10.
(9) Install valve cover, refer to paragraph 4.56.c.
5-36
