6
LOCKED FOR PRINTING – SELECT SECT. NEEDED >
123
1. Measure valve stem diameter approximately
1-1/2” (38 mm)
from end of valve,
Fig.
15
.
Replace valve if stem diameter is less than
0.233”
(5.92 mm)
.
Fig. 15
1.5” (38 MM)
2. Valve faces can be resurfaced to
45
5
. See
Fig. 16
for dimensions for valves.
3. Lap the valves and seats with Valve Lapper
#19258
and Valve Lapping Compound
#94150
.
NOTE:
In most instances it is more economical to
replace the valves than to reface them.
Fig. 16
SEATING AREA CENTERED
ON VALVE FACE
1/32” (0.8 MM)
MINIMUM
3/64” – 1/16”
(1.2 MM TO 1.6 MM)
ASSEMBLY
1. Use Valve Guide Driver (1)
#19416
to install new
valve stem seals (2),
Fig. 17
.
a. Oil inner surface and lip of valve stem seal.
b. Press seal on to valve guide bushing until it
bottoms.
Fig. 17
2. Install valves,
Fig. 18
.
NOTE:
Lightly coat valve stems with Valve Guide
Lubricant
#93963
before installing valves.
Be sure valve guide lubricant is not on valve
face, seat or end of valve stem.
3. Install springs and valve spring retainers over
valve stems.
Fig. 18
NOTE:
Place a shop rag or short section of rubber
fuel line under valves inside combustion
chamber to hold valve in place while
compressing spring.
CAUTION
•
Wear eye protection when using Valve Spring
Compressor.
PREVENT EYE INJURY!
4. Temporarily install rocker studs (3) in cylinder
head.
5. Compress valve spring and retainer with Valve
Spring
Compressor
#19347
(5). Install the valve
retainer locks (4),
Fig. 19
.
Fig. 19
6. Make sure the retainer locks are seated into the
valve stem groove and valve retainer. Gradually
release pressure on the valve spring compressor.
Repeat procedure for other valve. Remove rocker
studs.
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