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Gearbox rear oil-seal removal
Posted: Fri Nov 15, 2013 8:55 am
by JohnRoss
I would like to replace the rear oil seal on the gearbox connecting to prop shaft.
The seal is held in place by a metal cap tightly pressed on to the aluminium case.
I notice two crimped spots around the edge of this cap.
What is the best way to remove this cap?
John Ross
Limassol
Cyprus
Re: Gearbox rear oil-seal removal
Posted: Fri Nov 15, 2013 10:34 am
by bmcecosse
You need to prise it off. Do you have the new seal in stock? The bronze sleeve may be worn - a new seal may not make much difference - but worth a try.
Re: Gearbox rear oil-seal removal
Posted: Fri Nov 15, 2013 12:58 pm
by les
The original one is crimped over in a couple of places, neatest way to get over this is to file an 1/8'' groove at these points.
Re: Gearbox rear oil-seal removal
Posted: Fri Nov 15, 2013 6:31 pm
by JohnRoss
bmcecosse wrote:You need to prise it off. Do you have the new seal in stock? The bronze sleeve may be worn - a new seal may not make much difference - but worth a try.
I can get seals locally. "the bronze sleeve" is that the end of the prop shaft that slides onto the splines? If this part is worn I could get it turned or resleeved locally and a suitably different sized seal fitted. Would that work?
Re: Gearbox rear oil-seal removal
Posted: Fri Nov 15, 2013 7:18 pm
by bmcecosse
See the MOSS exploded view
http://www.moss-europe.co.uk/Shop/ViewP ... exID=17075 Note the seal IS the metal part that you will need to prise/cut off - it may not be reusable. Yes - if the bushing is worn - I'm sure you can have one made locally. New ones need to be pressed in and then reamed to size anyway. How bad is the oil leak? If 'not much' I would leave well alone! Can you noticeably lift the prop shaft up/down in the bushing ?