Service Manual

6-4 COMPRESSION
To Replace Valve Guide
To Remove Valve Guide:
(1 ) Use a valve guide remover
guide.
(A) to replace
valve
(2) Fix valve guide remover on cylinder with bolts
and nuts.
(3) Put a coat of engine oil to the remover bolt
threads and screw
it in until the threads can
be seen
at valve guide lower end.
(4) Install thrust washer (B) and nut (C) (left
hand thread) to the remover bolt.
Draw out
(5) Turn out the bolt to remove valve guide
bushing until
it is completely removed from
the guide.
To Install Valve Guide:
(1) Use a valve guide remover to install valve guide.
(2) Apply a coat of engine oil to the outer surface
of
valve guide (A).
(3) Install thrust washer (B) and new valve guide
(A) to the remover bolt and retain them with
nut
(C) as shown.
Draw in
(4) Turning the remover bolt, drive new valve
guide into the hole to proper depth.
Valve Guide Depth h
30 mm (1.18 in.)
Exhaust 30 mm (1.18 in.)
(5) Use stanisol or kelosen lubricant to finish
(6) Turn to finish specified reamer (A) clockwise.
(7) Throughly clean valve area before reassembling
reaming by
a valve guide reamer.
engine.
VALVE SEAT RECONDITIONING
1. Inspect valve seats for damage. If seats are
warped or distorted by beyond recondition-
ing, replace cyl. block.
Pitted or worn
valve seats can be refaced. Lap
valves to seats after refacing.
2. To repair the seats; first use 45" cutter (A)
then
30" to obtain standard valve seat width
and
45" again to finish.
Check the
seat for good contact all the way
around with machinist's dye.