Transmission pump seal 904/20226 JCB, genuine

For the JCB machines: transmission pump seal 904/20226, a genuine JCB part. This seal is used on the transmission pump.

An oil seal seals a rotating shaft where it leaves its housing, keeping oil in and dust and water out. A metal or rubber-covered outer case holds the seal in its bore, while a spring-loaded rubber lip bears on the shaft. When the lip hardens, wears or its spring weakens, the seal starts leaking: the oil level drops and dirt getting in ruins the bearings.

Specifications

Compatibility

According to the product card, 904/20226 is an oil seal. The card also lists 904/M9409. Fit is confirmed by the part number. The catalogue also has the aftermarket version of this part. Other parts are in Transmission.

Fitting

Remove the old seal without scoring the bore or shaft. Clean the bore, lubricate the seal lip with the working oil or grease and drive the seal in evenly, lip towards the oil, with a flat mandrel on its outside diameter. After assembly, top up the oil and check for leaks after the first run. Where possible, the new seal is set a few millimetres away from the old seal's track rather than on it.