Transmission bearing 907/53800 JCB, aftermarket, option 1

Transmission bearing 907/53800 is an aftermarket part for the JCB machines.

Most bearing failures are caused not by the bearing but by the oil: dirty or old oil, a low level and water in the oil soon ruin the raceways. Changing the transmission oil and filter on time therefore directly extends bearing life. If a bearing has failed, metal particles in the oil may have damaged the others, so the gearbox is flushed and the other bearings are checked too. Fine metal dust collecting on the magnetic drain plug is an early sign that one of the bearings has started to wear.

Specifications

Compatibility

According to the product card, 907/53800 is a transmission bearing. The card also lists 907/20045, another JCB number for the same part. Standard bearing designation: 25584A-520. Fit is confirmed by the part number. The catalogue also has the genuine version and aftermarket version of this part. Other parts are in Transmission.

Fitting

To change a bearing, remove the relevant shaft from the gearbox, pull the old bearing with a suitable puller and check the shaft and housing seats. Lubricate the new bearing with clean transmission oil and press it on applying force only to the ring being seated, never through the rollers or balls. On taper bearings, set the preload or end float with shims to the service manual. After assembly, fill the gearbox with the specified oil and listen for noise and watch the temperature on the first run.