10.9
Section 10
Reassembly
10
Figure 10-29. Valve Components.
Valve Keepers
Retainer Spring
Cap
Figure 10-30. Installing Valves with Valve Spring
Compressor.
Install Cylinder Heads
NOTE: Cylinder heads must be a ached with the
original type of mounting hardware, using
either hex fl ange screws, or mounting studs
with nuts and washers. Do not intermix the
components.
1. Check to make sure there are no nicks or burrs on
the sealing surfaces of the cylinder head or the
crankcase.
Heads secured with mounting studs, nuts, and
washers:
2. If all of the studs were le intact, go to Step 6. If
any studs were disturbed or removed, install new
studs as described in Step 3. Do not use/reinstall
any loosened or removed studs.
3. Install new mounting stud(s) into the crankcase.
a. Thread and lock two of the mounting nuts
together on the smaller diameter threads.
b. Thread the opposite end of the stud, with the
preapplied locking compound, into the
crankcase, until the specifi ed height from the
crankcase surface is achieved. See Figure
10-31. When threading in the studs, use a
steady tightening motion without interruption
until the proper height is obtained. Otherwise
the frictional heat from the engaging threads
may cause the locking compound to set up
prematurely.
Figure 10-31. Installing New Mounting Studs to
Specifi ed Height.
The studs closest to the li ers must have an exposed
height of 75 mm (2 15/16 in.).
The studs furthest from the li ers must have an
exposed height of 69 mm (2 3/4 in.).
c. Remove the nuts and repeat the procedure as
required.
4. Check that the dowel pins are in place and install
a new cylinder head gasket (part number facing
up).
5. Install the cylinder head. Match the numbers on
the cylinder heads and the crankcase. See Figure
10-26. Make sure the head is fl at on the gasket
and dowel pins.
6. Lightly lubricate the exposed (upper) threads of
the studs with engine oil. Install a fl at washer and
hex nut onto each of the mounting studs. Torque
the hex nuts in two stages; fi rst to 16.9 N·m
(150 in. lb.), then fi nally to 33.9 N·m (300 in. lb.),
following the sequence in Figures 10-32 and
10-34.
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