Figure 11B-42. Push Rod and Lower Spring Seat
wrench flats and a bright "turned" finish
and the lower spring seats are serrated
along the push rod contact surfaces (see
Examine the cam follower springs for
wear or damage and check the spring
load. Replace a spring when a load of
l e s s then 172 Ibs (765 N) will compress it
to a length of 2.125". Use spring tester
J 22738-02 to check the spring load (see
R e p l a c e Cam Roller and Pin
To replace a cam roller and pin, proceed
as follows:
Figure 11B-41. Cam Roller Clearance
the total diametric clearance and side
clearance.
Install a new roller and pin if
the clearances exceed those specified in
Figure 11B-41 on page 11B-29. Cam fol-
lowers stamped with the letter "S" on the
pin,
roller
and
follower
body
are
equipped with an oversize pin and roller.
The same clearances apply to either a
standard or oversize cam follower assem-
bly.
Examine the camshaft lobes for scoring,
pitting or flat spots. Replace the cam-
shaft if necessary.
Measure the cam follower bores in the
c y l i n d e r head with a telescope gauge and
micrometer and record the reading.
Measure the diameter of the cam follower
with a micrometer. Record the readings
and compare the readings of the follow-
ers a n d b o r e s t o d e t e r m i n e t h e c a m
follower-to bore clearances.
Inspect the push rods and spring seats
for wear. The push rods have milled
Figure 11B-43. Testing Cam Follower
Spring
Engine (Less Major Assemblies)
11B-29