140-3 SERIES
15-15
TESTING AND ADJUSTING CYLINDER BLOCK
REPLACING CRANKSHAFT GEAR
Special tools
1. Removal of gear
Make a scratch in the surface at the root of the
teeth with a grinder, then assemble pullers
and , and turn the nut to remove the gear.
If the gear cannot be removed in this way,
make a scratch in the surface at the root of
the teeth with a grinder, then heat the gear
with a burner and knock the gear out with a
copper rod.
Be careful not to damage the shaft.
2. Press fitting gear
1) Check the gear mounting surface, key
groove, and flange surface, and if there are
any scratches, correct them with an oil-
stone.
2) Knock a new key into the key groove of the
shaft.
3) Heat the gear for the specified time at the
specified shrink-fitting temperature.
Crankshaft gear shrink-fitting temperature:
200°C
Heating time: Min. 30 minutes
4) Put the timing mark on the outside, then use
a hitting tool to press fit until the side face of
the gear is in close contact with the shaft
flange.
Knock in quickly before the gear be-
comes cool.
No. Part No. Part Name Q’ty
790-101-2800 Bearing puller 1
790-101-2300 Push puller 1
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