Group 21 Reconditioning engine
Cleaning, checking
C37
Remove ring gear
Mount the flywheel in a vice protected by soft jaws.
Lever off ring gear with a screwdriver. It may be neces-
sary to split the ring gear above the drilled hole.
Clean mating surfaces on flywheel.
C38
Heat new ring gear to approx.
230°C
(446°F)
Check temperature with solder (40% tin, 60% lead).
Sol-
der melts at
220-230°C
(428-446°F).
C39
Install new ring gear
Position ring gear.
IMPORTANT! Bevelled side of ring gear must face
fly-
wheel.
If necessary tap ring gear until flush. Use a brass
drift.
Leave to
cool.
ON
89.5 mm
(3.52 in)
I
88.3 N (19.7 lbs)
T
56.5-60.5
mm
(2.22-2.38 in)
C40
Clean and inspect oil pump
Disassemble and clean oil pump.
Check for damage and wear and also that relief valve
plunger runs smoothly.
Check that axle is firmly secured to cylinder block.
Test relief valve in a spring tester.
Replacement oil pumps are only available as complete
units (pump body cover, gears and relief valve). Spare
parts for the relief valve are, however, available.
Re-assemble pump.
C41
Clean and check parts
Oil strainer, sump, lower crankcase, valve covers and
timing gear case.
37
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