84 VF500:Advice needed

Hi,New guy here,

I've just bought a 1984 VF500,with "a slight oil leak from the area of the sump",I had a chance to have a really quick look at the bike today (not a small leak at all) and it seems that the oil seal on the g/box output shaft(mainshaft) is the culprit.

My question is, can it be changed it in place and if so how do you do it or is an engine stripdown required?
Any help or advice would be very welcome

Sorry if this is covered elsewhere,and before anyone jumps down my throat about the search facility, I've just spent the last couple of hours trying to come up with international terms and phrases to use, but to no avail,,apart from one post leading to another site requiring registration that is closed.

I have to say i'm not mechanically inept so sorry if i sound miffed, i just want to be back on the road real quick....plus i'm knackered.
Thanks all,Ian

 

your saying where the front sprocket is?? or where the shifter hooks to??

 

Hi Matt thanks for replying,
Yes, the shaft that the front sprocket sits on,its the seal behind that.
Sorry, have just checked the Clymer manual,who have it labelled mainshaft but the parts manual says its the countershaft.
Its definitely the seal on the shaft with the front sprocket on it.:thumbsup:
Dammit i hate conflicting publications and language differences, Still means ones research must be more thorough tho

 

Maybe I should re-research

 

IF PO neglected leak and ran the engine low on oil it could have damage to bearings and not be worth fixing.......

 

i wanna say you can still get that seal?


http://www.bikebandit.com/houseofmotorcycles/honda-motorcycle-vf500f-interceptor-1984/o/m9685

 

nah your going to have to split the case to get to that seal.

Splitting the case is a pain in the a$$ so if I were in your position; i'd pull the engine myself and take it to someone to fix that seal. Its probably about a 3 or 4 hour job after the motor is out + that seal and a ghasket kit

 

One cause of that seal failure, which is not common, could possibly be the failure of the transmission shaft bearing just behind the seal, allowing the shaft to move excessively and destroy the seal..........in which case you're looking at expensive transmission work, not a $10 seal.

The most common cause for bearing failure in that area is a badly adjusted, too tight chain.

 

Here is a picture of a VF1000 I think some of the seals are the same.