Crankshaft gear 320/03132 JCB Dieselmax, aftermarket

For the JCB Dieselmax 444 engine: crankshaft gear 320/03132, an aftermarket part.

The gear is an interference fit on the front of the crankshaft. When replacing it, check the mating gears for wear; in a badly worn train, one new gear may not cure the noise. On the Dieselmax the gear train sits at the front behind the timing cover and runs on gears rather than a belt, so there is no periodic timing belt change. Its life depends on oil cleanliness and gear backlash. The crank gear is under constant load from the first turn and its tooth faces are hardened. The gear is chosen by part number. The gear is made of steel.

Specifications

Compatibility

The part is listed for JCB 3CX and 4CX backhoe loaders. The catalogue also has the genuine version of this part. Other parts are in JCB Dieselmax engine.

Fitting

The gear is usually heated and fitted onto the crankshaft; line up the timing marks per the service manual and measure the backlash. Refit the front cover with a new gasket and front seal. Clean and inspect the crankshaft nose and keyway before fitting. Compare the backlash with the limit in the service manual.