SERVICE MANUAL
CYLINDER HEAD & VALVES
Section 3
6.
Inspect cylinder head COOLANT DIRECTORS
for RESTRICTIONS or LOOSENESS.
a.
Visually check for RESTRICTIONS.
b.
Tap or pull directors by hand to check for
LOOSENESS.
c.
Remove
loose
or
restricted
coolant
directors. Use a slide hammer (1, Fig. 24)
with a small enough jaw to hook under
coolant director (2) "opening" as shown in
Fig. 24.
d.
New coolant directors should be tapped into
place with a small hammer and block.
They must be recessed 1.5 mm (.06")
below the bottom deck of the cylinder head.
e.
Aim coolant directors at angles shown in
Fig. 25.
Figure 24. - Coolant Director Removal
1.
Slide hammer
2.
Water director
Figure 25. - Aiming Coolant Directors
1.
Coolant Director
2.
Exhaust Valve
3.
Coolant Director
4.
Intake Valve
5.
23Angle
6.
55Angle
7.
Inspect Valve Guides as follows:
a.
After cleaning ALL valve guide bores,
position a light at bottom of valve guide
bore; examine walls for burning, cracking or
excessive wear.
b.
Measure I.D. of valve guide at several
points. VALVE GUIDE I.D. LIMITS ARE:
9.500 mm (0.3740 in)
9.525 mm (0.3750 in)
c.
Replace any guides which are:
1.
Burned
2.
Cracked
3.
Worn Beyond Limits
4.
Without Rifling
d.
Remove valve guides with valve guide
remover (see Tool List for tool number).
CGES-185-3
PRINTED IN UNITED STATES OF AMERICA
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