SERVICE MANUAL
CYLINDER HEAD & VALVES
Section 3
Figure 30. - Valve Seat and Insert
Counterbore Radii
d.
Install valve seat inserts as follows:
1. Chill valve seat inserts and driver tool
in dry ice or Liquid Freon for one-half
hour before installing.
NOTE: Chilling will prevent metal scraping at
counterbore, ensuring maximum contact of mating
surfaces.
2.
Align insert to avoid cocking.
3.
Press insert into cylinder head using an
arbor press and insert driver as shown in
Fig. 31. Exert an even pressure of 2225
N•m (500 Ibf-ft) for five (5) seconds to
assure proper seating.
Figure 31. - Installing Insert
4.
Properly seated, insert should be recessed
into head as shown in Fig. 32.
Figure 32. - Insert Properly Installed
Inspect Valve Springs as follows:
1.
Clean all valve springs and valve spring
seats in a suitable solvent.
2.
Examine springs and seats for rust, pitting
and cracks.
3.
Test valve spring tension using a spring test
loader (see Tool List for tool number) as
follows:
CGES-185-3
PRINTED IN UNITED STATES OF AMERICA
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