Mitsubishi S12A2 User Manual

6-28
Chapter 6 INSPECTION AND REPAIR OF BASIC ENGINE
5.8 Crankshaft Gear - Inspect
If there is any defect on the crankshaft gear teeth, such as
flaking, wear, or local contact, replace the crankshaft gear
with a new one.
5.9 Crankshaft Gear - Replace
5.9.1 Crankshaft Gear - Remove
Using a gear puller, remove the gear from crankshaft.
Note: When removing the crankshaft gear by heating, the
heating temperature is 180°C [356 °F] or less.
Crankshaft Gear - Remove
5.9.2 Crankshaft Gear - Install
(1) Measure the outside diameter of crankshaft and inside
diameter of crankshaft gear, and check the interference.
(2) Heat the crankshaft gear evenly to the specified temper-
ature.After checking gear direction and position, install
the crankshaft gear.
Crankshaft Gear - Install
Crankshaft Gear Installation Direction
Use protective gloves when you touch hot parts.
Handling with bear hands could result in burns.
Crankshaft gear
(a) Check the correct installing direction and position
of crankshaft gear.
(b) To shrinkage-fit the crankshaft gear to crankshaft,
heat the crankshaft gear evenly to the specified
temperature.
Gear engaged position
Match mark side
Interference standard:
0.106 to 0.171 mm
[0.0042 to 0.0067 in.]
7 mm
[0.28 in.]
Dowel pin
Crankshaft gear
Shrink fit temperature: 180
㷄
[356
㷊
] or below

Mitsubishi S12A2 Specifications

General

Brand	Mitsubishi
Model	S12A2
Category	Engine
Language	English