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Oil Pump
The oil pump is of trochoid
type and is mounted at the
rear of the crankcase.
The
oil
filter
is
attached
to
this oil pump.
The oil pump incorporates a
relief valve which, when the
delivery
pressure
becomes
more
than
3.5
kg/cm 2 ,
relieves excess pressure by
passing
oil
back
into
the
oil sump.
When
disassembling
and
reassembling
the
oil
pump,
pay attention to the following items.
(I)
Apply engine oil to the rotating parts before assembling.
(2)
After assembling, check that the pump shaft turns smoothly.
(3)
Measure the clearance between the outer rotor and the pump body
using a feeler gauge, and if the clearance is excessive, replace
the rotor assembly or the pump body or both.
(4)
Measure the clearance between the outer and inner rotors using a
feeler
gauge,
and
if
the
clear ance
is excessive,
replace
the
rotor assembly.
(5)
To check the clear ance between the rotor and cover,
inser t
the
rotor
into the pump body and apply a straight edge across the
body face.
If the clearance does not conform to the standard,
replace the rotor assembly or body.
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