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

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

The bearing is chosen by part number and standard bearing designation, since a bearing with the same outer dimensions but a different load rating or contact angle upsets the axle setting. Preload matters on taper roller bearings: too much preload overheats the bearing and shortens its life, while too little leaves play and shock in the gear mesh. After a bearing change the setting is therefore made with measurements, renewing the shims if necessary.

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 4) of this part. Other parts are in Bearings.

Fitting

The bearing is changed in clean conditions; take the new bearing out of its packaging only at fitting and do not wipe off the protective oil. Press it into its housing or onto its shaft only with a suitable driver and only through the ring that has the interference fit; the rollers and cage must never be struck. On taper roller bearings the cone and the cup are replaced together. After fitting, set the bearing preload or clearance by the method in the machine's service manual and top up the axle oil to the specified level.