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TM10-4320-316-14
5-10.
CYLINDER HEAD ASSEMBLY REPAIR AND REPLACEMENT. - Continued.
f.
Installation. - Continued.
(4)
Secure cylinder head (12) to cylinder block using two nuts (9), two washers (10), two nuts (6), and two
washers (7).
(5)
Tighten nuts using torque wrench to 20-23 ft-lb (280-320 kg-cm).
(6)
Refer to Figure 5-5. Install valve stem caps (5).
NOTE
Rocker arm with flat head is for the exhaust valve only.
(7)
Install rocker arm support (2) with intake and exhaust valve rocker arms attached.
(8)
Tighten rocker arm support bolt (1) with torque wrench to 14.5-16.6 ft-lb (200-230 kg-cm).
(9)
Refer to Figure 5-4. Install gasket (5), cylinder head cover (4), two screws (3), holder (2), and plunger
(1).
g.
Adjustment. (Refer to Figure 5-8).
NOTE
Valve clearance should be adjusted when engine is cold.
(1)
Turn flywheel so 'T" mark on flywheel aligns with alignment mark on cylinder block.
(2)
Slightly rotate flywheel (approximately 20 degrees in both directions). If valves move up and down,
this is the exhaust top dead center. Do not adjust the valve clearance with the flywheel in this position.
(3)
Give flywheel another turn until '"T" mark on flywheel aligns with alignment mark on cylinder block.
Slightly rotate flywheel (approximately 20 degrees in both directions). If valves do not move up and down, the flywheel is
in correct position to check valve clearance.
(4)
Check that 'T" mark and alignment mark are aligned correctly.
(5)
Insert screwdriver into adjusting bolt and loosen locknut. Refer to Figure 5-9.
(6)
Turn screwdriver counterclockwise to obtain a clearance. Move valve lever inside for adjustments.
(7)
Insert feeler gauge between valve rocker arm and top of the valve spring cotter.
(8)
While turning the adjusting screw clockwise, slowly slide the feeler gauge back and forth. Stop turning
adjusting screw when slight resistance is felt on the feeler gauge.
(9)
Remove feeler gauge and tighten locknut. Keep screwdriver inserted into adjusting screw to prevent
adjusting screw from turning.
(10) Verify valve clearance of 0.006 inch (0.15 mm) after completion.
5-20
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