Group
21
Reconditioning engine
C/eaning, checking
,
...
"
34
Check
connecting
rods
Use a connecting rad aligner.
Check
for out-of-true,
distortion
and S-form.
C20
Replacing starter ring
gear
(manua/
gearbox
on/v)
Operations C21-22
C21
Remove
old
ring
gear
Make a punch mark exactly between
two
cogs and
opposite one
of
the
milled
recesses
in
flywheel.
Drill
through
ring
gearwith
a
10
mm
drill.
Notel
Do
not
drill
inta
flywhe
el.lf
necessarysplit ring
gearwith
cold
chisel.
Lift
off
ring gear.
C22
Install
new
ring
gear
Place ring gear in aven at approx. 250
"C
(480°F).
Check
temperature by means
of
solder (40% tin,
60%
lead). Solder melts at 220-230"C (430-450"F).
Clean
mating
surfaces.
Place ring gear in position, bevelled side facing
flywheel.lf
necessarytap ring gear
inta
position
with
a
brass
drift.
Leave
to
cool.
Oil
pump
Operations
C23-28
Disassemble
oil
pump
Clean
and
check
all
parts
C23
C24
Check for damage, wear etc.
Pay
special attention
to
the half moonshaped segment and surface between
inlet and
autlet
ports.
If
defective,
pump
must be replaced since separate
parts are not
available. Parts are available for relief
valves.
,
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