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ENGINE: LUBRICATION
LUBRICATION
OIL PUMP ..
Fitting Data
OIL PRESSURE RELIEF VALVE
CENTRIFUGAL OIL FILTER
OIL SUMP GASKETS . . . .
LOW OIL PRESSURE INDICATOR SENDING UNIT
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Pressure metered type engine lubrication through
a gear pump.
The lubrication system
(fig.
124) includes, besides
the gear pump:
- a suction intake horn (4,
fig.
126), with filter
screen;
a centrifugal delivery oil filter (6, fig. 124);
- a pressure relief valve (5);
- a sending
unit (4)
for low oil pressure
in-
dicator.
Standard oil pressure: 42.7 to 56.9 p.s.i. (3 to
4 kg/em ').
OIL PUMP
The oil pump is mounted on lower edge of
crankcase.
When servicing the pump, examine the teeth of
gears and replace gears
if
teeth tum out to be
worn or damaged.
Clearance between tooth ends and pump housing
must not exceed .006" (0.15 mm)
(fit
of new parts
.0004" to .004" -
om
to 0.10 mm).
Fig. 125 • Ojl pump in place in crankcase.
Fig. 126.
Ojl pump assembly.
1. Drive shaft.· 2. Pump hous-
ing.
-
3.
Oil
delivery
pipe
to front main bearing cap. -
4.
Suction
horn
with
filler
screen.
Clearance between drive gear shaft and seat
must not be greater than .006" (0.15
rom);
fit of
new parts .0005" to .0020" (0.013 to 0.050
rom).
Fitting clearance between pin and driven gear
is
.0004" to .0020" (0.010 to 0.050
rom); this
clearance
must not exceed .004" (0.10 rom).
The guide bushing of pump drive shaft is in-
serted
with
a press fit of .001" to .0028" (0.025
to 0.070
rom).
Clearance between drive shaft and guide bush-
ing must not exceed .006" (0.15 rom); fit of new
parts .0010" to .0024" (0.025 to 0.062
rom).
Standard clearance between pump drive gear
and camshaft gear should be .0024" (0.060
rom);
wear limit .004" (0.10
rom).
Check filter screen on suction horn for clogging
or tear; in the affirmative, replace the screen.
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