Most everyone with a Triumph will have had or most likely does have an oil leak at the rear of the gearbox, let's face it it can be soooooooo many things given those cars propensity to leak oil but a really common one is caused by the gear selector shafts. The seals used in this application are o'rings and whilst they work they don't work well for long, one weakness in the way that they are used here is that there is no compression of the ring, there is a backing plate that clamps over the o rings and shafts but it only holds the rings very loosely in position, there is no slot or compression, this is not an ideal situation for O rings. Imo quad rings with a backing ring to provide a slight compression are much better in this application, the quad rings have a flattish face which the backing ring/spacer sits nice and evenly one and quad rings provide a double seal effectively due to their shape. Back in the day there wouldn't have been a Quad Ring shop in Coventry🤣🤣, nowadays we have such things.
Quad rings and PTFE backing rings/spacers, 3000 miles in and not a drop, works for me. Buy them from one of the seal suppliers, couple of cent vs £10s from the Moss's etc. First photo here shows the backing plate and selector shafts and the oil leak is visible other photos show the backing rings and new quad rings.Â
Â
Replies
Don't seal up all the leaks....the car will have no character left!
Â
Very nice mod niall! Looks very neat. Fairly amazing that they probably knew it would leak back in the day but pushed ahead with the design anyway. Jay was showing me pictures of his spitfire diff earlier. He changed the breather assembly for a more effective one. The factory breather was a cost saving...washer and a split pin😄
Perfect timing, was unsure what to get her indoors ( or mine is more of a Great Outdoors kinda Girl) so three of these will be just what she has always wanted.........!
Great tip, Niall, are they readily available?
pibren
ps well done on using the forum!
Yeah I'll dig out the suppliers I used if anyone wants the details. Off the shelf available in ones and twos for buttons.Â