TM 9-2320-260-34-1
3-83. INJECTOR AND VALVE ADJUSTMENT (TORQUE METHOD) (Contd)
Before checking or setting valve clearance, ensure crossheads are
adjusted (para. 3-16).
NOTE
Crossheads operate two valves with one rocker lever. Crosshead
adjustments are necessary to ensure equal operation of each valve.
Loosen locknut (4) on adjusting screw (3) of crosshead (13).
8.
Back out adjusting screw (3) one full turn.
9.
Using light finger pressure on rocker lever contact surface (9), hold crosshead (13) against valve
10.
stem (11).
Turn adjusting screw (3) down until adjusting screw (3) touches valve stem (12).
11.
Tighten locknut (4) 22-26 lb-ft (30-35 Nm.
12.
NOTE
Ensure adjusting screw does not move when tightening locknut.
13.
While holding adjusting screw (3) with screwdriver, tighten locknut (4) 25-30 lb-ft (34-41 NZm).
Using feeler gage, check clearance between crosshead (13) and valve spring retainer (10). There
14.
must be a minimum clearance of 0.020 in, (0.51 mm).
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