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SECTION 11
REASSEMBLY
Figure 11-30. Cylinder Barrel Sealant Pattern/Cylinder
Barrel Fastener Torque Sequence.
3. Install one (1) new piston pin retainer in one side
of each piston pin bore.
4. Install the pistons (inside cylinder barrels), piston
pins, and new piston pin retainers to connecting
rods. Refer to Figure 11-31.
Cylinder
Connecting Rod
Barrel
Piston
Piston Pin
And Retainers
Figure 11-31. Installing Pistons/Cylinder
Barrels to Connecting Rod.
NOTE: To prevent damage to the connecting rods
when reinstalling the cylinder barrels,
make sure the barrels and connecting
rods are supported at all times.
Do not
allow the connecting rods to drop against
the edges of crankcase.
5. Slide the cylinder barrels over pistons and crank-
case studs.
6. Install the plain washers and hex. nuts. Torque
hex. nuts #1 and #2 to 100 In. Ib. Torque the re-
maining hex. nuts to 100 in. Ib. in the most expe-
dient sequence.
Refer to Figure 11-30.
7. Torque all hex. nuts to 200 Іп. Ib. in the sequence
shown.
MEASURE VALVE-TO-TAPPET
CLEARANCE
IMPORTANT:
The piston must be at top dead center (TDC) of the
compression stroke to measure valve-to-tappet clear-
ance. By rotating the crankshaft and observing the
tappets for movement, it can be determined If a cylin-
der is at TDC.
И, for example, the crankshaft is rotated and
movement is observed in the 42 side valve box--the
opposite cylinder (#1 side) will be at TDC and valve-
to-tappet clearance can be measured.
Rotating the flywheel one complete revolution (360°)
will then cause movement in the #1 side valve box.
The #2 side cylinder will be at TDC, enabling mea-
surement of valve to tappet clearance for that side.
The valve faces and seats must be lapped-in before
checking/adjusting valve-to-tappet clearance.
1. Rotate the crankshaft and look into the valve
boxes. The tappets will move in only one of the
boxes.
2. Install valves into valve guides for the cylinder in
which no movement was observed. Hold valves
firmly against seat and measure valve-to-tappet
Clearance with a flat feeler gauge. Refer to
Figure 11-32.
11.11
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