Westerbeke 3.0KW BPMG-60HZ Service Manual page 35

ASSEMBLY
• Oil pump
• Pour the engine oil of approximately 2.0 ml into
the oil pump through the inlet and outlet ports.
• Apply the engine oil for the 4-stroke cycle engine
to the a-rings (1.5-10.70, 1.5-8.50, 1.5-15.50)
and the O·ring at the boss before setting them in
the oil pump.
• When assembling the oil pump to the cylinder
head, carefully set
it
so that the cam shaft pin
and the notch on the oil pump shaft meet each
other.
• Fasten the oil pump with the three M6
bo~s
with
the tightening torque and in the tightening order
specified below.
Tightening order:
<D,
~
and @
Tightening torque: 5-6 N - m (0.5-0.6 kg - m)
Cam shaft
O-Ring~
~
, /1.5-15.5
1.5-8.5
~
Oil rOUTJ
Oil nNJ
+-<i~
Oil pump
• Plunger
• When setting the plunger stopper into the
plunger case, pay attention to the orientation of
the plunger stopper so that it is set as shown.
• When assembling the plunger assembly to the
cylinder, fasten it together with the cover.
Tightening torque: 19-21 N-m (1.9-2.1 kg-m)
(12-15Ib - It)
Plunger stopper
Cover
• Piston ring
Fitting oil rings to piston
1. Set the spacer expander in the oil ring groove,
and check to see if both the ends of it correctly
link with each other as shown in
<D.
Oilrin~~
CORRECT
Engines
&
Generators
28