3-35. CYLINDER HEAD AND VALVE REPAIR (Contd)
d. Assembly and Testing (Contd)
Step 26 does not apply to No. 2 cylinder head.
Cover plate (25) and two
a. Install on cylinder head (9).
new preformed packings
b. Secure with two screws (26).
Four intake valves (13) and
a. Dip valve stems into clean
exhaust valves (14)
b. Install valves (13) or (14) on
Ensure cylinder head is clean
valve stem guides (18) from bottom
and valves are installed in their
side of cylinder head (9).
original locations as numbered in
step 7. Ensure valve heads are
fully seated on valve inserts (12)
Cylinder head (9)
Place on wooden bench or
Wooden bench or protective
protective surface with machined
surface will prevent damage to
A maximum of two 0.031 in. (0.794 mm) spacers may be used under lower valve spring
guide when cylinder head has been resurfaced and valve seat has been reground. Do not
use spacers to compensate for weak springs.
Eight upper valve spring
a. Place over valve stem guides
guides (3), valve springs
(18) on cylinder head (9).
springs (4), and lower valve
spring guides (5) (spacers
b. Compress valve springs (4)
Use valve spring compressor
(33) if necessary)
and install sixteen new valve
(ST-448) (32) and head holding
collets (2) on stems of valves (13)
fixture (ST-583). Stud of valve
spring compressor (32) should
be installed on rocker lever
screw hole (31).
Ensure valves and valve seats are clean and dry.
Check seal between valve (13) or
Use valve vacuum tester
(14) and valve seat as follows:
a. Select correct size vacuum cup
for size of valve being tested.
b. Put vacuum cup over head
O-ring on vacuum cup must
of valve (13) or (14).
make seal on cylinder head (9)
around valve (13) or (14). Grease
can be applied to O-ring for a bet-