Crankcase; Preparatory Data; Fault Diagnosis; Clutch - Generic TR 125 Service Manual

XIII Crankcase

Preparatory data

Fault diagnosis

Crankcase

Clutch

Gearshift mechanism
Bent axle connecting rod assembly 13.6
Variable speed chamber
13.1 Preparatory Data
Function of crankcase:
Crankcase is the force bearing part of engine. It is mainly used to support crankshaft, clutch, transmission,
cylinder block and cylinder head. It bears impact from combustion and inertia force from movement of
crankshaft connecting rod; and forms a partial enclosed space (for air and oil).
Suspension hole is set on the crankcase, which can be connected with the suspension hole in the vehicle block
so that the engine can be linked together with frame and other parts.
Precautions on Operation:
Crankcase is a thin-wall casting part. Avoid impact on it during operation in case it may be distorted or broken.
Clean carefully all the components before inspection and test and purge them with high-pressure gas.
Drain the lubricating oil from crankcase before working on it.
13.1
13.2
13.3
13.4
13.5
13.7
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