DJM wrote: ↑Sat Jul 14, 2018 4:27 pm
I've come across a couple of cases of oil leakage from the clutch pushrod with a very odd cause.
Behind the small seal in the end of the gearbox mainshaft (the clutch pushrod seal) is brass or bronze disc with a hole in the centre. This hole only needs to be just big enough for the clutch pushrod to slide through and holds the pushrod central, leaving the seal to its job in keeping the oil in!
I've come across a couple of engines where the hole in the bronze disc was 1.5 to 2.00mm BIGGER than the clutch pushrod which then leaves the oil seal itself trying to hold the pushrod central and keep the oil on place, something it won't do, hence the leakage which even a new seal and pushrod won't cure.
The disc can be checked simply by prizing out the seal but if the hole does prove to be oversize it will be an engine strip to change it.
I know this is a reply to an old post but this bushing can be replaced without an engine strip. One needs only to pull the bushing by tapping it and then making a puller with a bolt and nut to match the tapped size. Mine was as DJM describes...way to big. I made another just big enough to allow the rod to pass and, so far at least, the problem is solved. I have photos but they won't attach.
