Pinion bearing 907/09000 JCB 3CX/4CX, aftermarket, option 4

For the JCB 3CX and 4CX backhoe loaders: pinion bearing 907/09000, an aftermarket part. This bearing is the taper roller bearing supporting the pinion.

The bearings inside an axle usually wear together, so when one has failed the other bearings, seals and gears in that assembly are checked too. Replacing a bearing on its own is no lasting fix if it will run with a worn gear or shaft seat. During service also check that the axle breather is clean, since a blocked breather builds pressure in the axle and pushes oil out past the seals.

Specifications

Compatibility

According to sources, 907/09000 is an HM803149/HM803110 taper roller pinion bearing used on JCB 2CX, 3CX, 4CX and 5CX backhoe loaders. The catalogue also has the aftermarket version (option 1), aftermarket version (option 2) and aftermarket version (option 3) of this part. Other parts are in Bearings.

Fitting

When the old bearing is removed, check the housing and shaft seat for burrs, rust and wear, since a worn seat lets the new bearing spin. Renew the seals and O-rings next to the bearing too. When the axle oil is drained, look at the metal particles in it: a lot of particles suggests the gears may also be worn.