Spur gear

Bevel gear

Helical gear

Worm gear

Clutch shaft and fly wheel

Gear box and final drive

Cam shaft and clutch shaft

Crankshaft and final drive

Universal joint

Fly wheel

Half shaft

Clutch shaft

Prevent fluid leakage

Prevent the seal rolling in groove

Provide cushioning effect

Withstand radial movement

Wrong selection gear shift lever

Excessive end float of gear

Wrong clutch engagement

Wornout clutch plate