Axle shaft 914/89400 JCB 3CX/4CX, genuine

Axle shaft 914/89400 is a genuine JCB part for the JCB 3CX and 4CX backhoe loaders.

Front and rear axle shafts work under different loads: on backhoe loaders the rear axle carries most of the bucket load, so twisting and spline wear are more common on the rear shafts. A shaft with stepped or cracked splines is renewed, since a welded or straightened shaft can break again under load. Sudden grip after wheelspin is one of the hardest conditions for axle shafts, so the differential lock and throttle are used carefully on slippery ground.

Specifications

Compatibility

According to sources, 914/89400, 914/60109 and 914/M0343 are numbers of the rear axle drive shaft of JCB 3CX and 4CX backhoe loaders; according to the product card the 4CX shaft fits both the right and left side. The catalogue also has the aftermarket version of this part. Other parts are in Axle shafts, propshafts and U-joints.

Fitting

For the change, remove the wheel and planetary gearbox and drain the axle oil. Slide the new shaft carefully into place with its splines lubricated with clean axle oil, using a protective sleeve so the splines do not damage the seal lips. Renew the seals and O-rings and top up the axle oil to level. The shaft comes new; check its splines and bearing surfaces before fitting. Also inspect the other shaft in the axle and the universal joint for wear. When the axle shaft is changed, check the splines of the differential side gear and the planetary sun gear too. Shafts on the two sides of an axle may differ in length, so lay the new one beside the old one to compare. Change the axle oil and inspect the metal on the drain plug.