
B. Rotate the crankshaft 240° (degrees). This puts the
#3
piston at the TDC position in it's cylinder.
Adjust the valve clearances for the intake and exhaust valves
of
the
#3
piston at the TDC position in it's
cylinder. Adjust the valve clearances for the intake and exhaust valves
of
the
#3
cylinder.
C.
Rotate the crankshaft another 240°. This puts the #2 piston at the TDC position in its cylinder.
Adjust the valve clearances for the intake and exhaust valves
of
the #2 cylinder.
Torquing
Cylinder
Head
Bolts
Tighten the cylinder head bolts according to the
sequence shown in the illustration to the right.
Make sure the engine is cold when this is done.
Before applying the specified torque to the bolt,
loosen it
114
to
1/2
of
a
tum
and then apply the
torque. Follow this procedure according
to
the
numbered sequence shown in the illustration
to
the right.
Cylinder
Head
Bolt
Tightening
Sequence
Bolts #1,2, and 3, (12 mm socket) 2.0 - 3.0 kg-m (14 - 22 ft-Ib)
Bolts #4,5,6,7,8,9,10, and
11
(14 mm socket) 7.5 - 8.5 kg-m (54-61 ft-Ib)
(Rockershaft Hold Down Bolts -
12
mm socket - 1.5-2.2 kg-m
(11-16
ft-Ib)
Valve
Clearance
Adjustment
II
CAUTION
II
Adjust the valve clearance when the engine is
cold. Valves are adjusted by cylinder in the
firing order
of
the engine.
Tighten the cylinder head bolts to the specified
torque before adjusting the valves.
1.
Pull
off
the air breather pipe from the rocker
cover,
and
take off the cover bolts and the rocker
cover to expose the rocker shaft and valve
assembly.
Mark
on
gear
case
TDe mark on
crankshaft
pulley
Timing mark
2.
Adjust the valve clearances at TDC for each cylinder when they are on their compression stroke.
Remember the engine's firing order is 1 - 3 - 2. You may find that turning the engine's crankshaft is more
easily accomplished when the engine's glow plugs are removed before the crankshaft is rotated.
WESTERBEKE
GENERATORS
66
I
I
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