Bevel pinion and gear kit 459/10234 JCB Loadall, genuine

Bevel pinion and gear kit 459/10234 is a genuine JCB part for the JCB Loadall telehandlers. This kit is the pinion and gear of the transmission bevel gearbox.

Crown wheel and pinion sets differ in ratio, spiral direction (right or left hand), pinion thread and mounting dimensions, so two similar-looking sets may not fit the same axle. The set is therefore chosen by part number and the tooth counts on the old set. On four-wheel-drive machines the front and rear axle ratios must match each other, since different ratios strain the driveline and wear the tyres.

Specifications

Compatibility

According to sources, 459/10234 is the pinion and gear kit of the bevel gearbox on JCB Loadall telehandlers (for example the 506-36); the product card also gives 459/10220. The catalogue also has the aftermarket version of this part. Other parts are in Reduction gears.

Fitting

Fitting a crown wheel and pinion is precise work needing measuring tools and should be done by an experienced workshop. Pinion depth is set with shims and backlash with the differential bearing adjustment, then the tooth contact pattern is checked with marking compound. Pinion bearing preload and pinion nut torque are set to the service manual. After assembly, fill the axle with the specified oil and check for whine and heat during the first hours.