Annabelle May Boater

This has been a really helpful thread. I too had a weep from the output flange oil seal and was successful in replacing it. If it helps, the oil seal is a R23 type (seal with wiper) and its metric size is 54 x 70 x 10 (the is internal diameter 54mm, Outer diameter 70mm and width 10mm). The seal pack for the PRM gearboxes from ASAP-Supplies provides this seal (MT349) but it also provides the 'o' ring which fits over the shaft and inside the output flange. In order to remove the nut (30mm socket works) from the end of the output shaft, I bought a 1m length of 30mm x 30mm angle iron and drilled 2 x 10mm holes with centres 76.3mm apart toward the end of one of the flats. This I then bolted through 2 of the holes in the output flange, giving me a lever to work against. This lever would be needed again to torque the nut back up to 162.7nm. I went a step further to ensure I could fit the MT349 seal at the correct point (just inside the chamfer of the retaining plate), I removed the plate which holds the output shaft bearing. This first required removal of the gearbox oil pump, the 3 seals (O-rings) inside the oil pump are also in the ASAP-Supplies kit. Be aware that the output shaft and thrust bearing will start to slide out when this retaining plate is removed. Having removed the plate which holds the oil seal, it was much easier to fit the oil seal to the plate in the workshop. To use the famous words of a well known car maintenance manual - refitting is the reverse of removal. With thanks to those who have posted above, this job did turn out to be fairly straightforward.