Z1b--------bled to death

[d123456789p]

Dudes

Last year got my bike MOT'd, as I put it in the garage from the MOT station it proceeded to bleed oil all down the side stand onto the garage floor, I cannot see where it came from but the full contents of the sump has gone, is there a common seal that can go? Its not the sump itself, it looked higher than that, the bike has now stood the whole summer unused (criminal!) and I want to finish this season with a machine ready to come out in the spring.

Any thoughts?

Cheers in advance.

[Pigford]

Drive shaft seal.....

Not a common problem, but best way will be remove the sprox casing, clean area well, refill with oil & run bike & WATCH... Talc the area first (once cleaned) to make easier

[Pasc]

While you are checking out the sprocket seal also take a look at the gearchange shaft seal.

[d123456789p]

...............just thinking ahead, are these both engine out strip jobs?

[ted1r]

HOW BAD A LEAK IS IT ?MY 1R DOES THE SAME AFTER A LONG RUN.

[Thezedsintheshed]

Both the gearchange shaft oil seal and the output shaft oil seal can be changed without having to remove the engine from the frame.
Both oilseals are fitted to a seperate cover which bolts to the crankcases behind the engine sprocket.
Basic procedure is
bike on centerstand
remove left hand rider footpeg
remove gearlever
remove outer sprocket cover
remove engine sprocket
remove inner cover behind engine sprocket ( this is the cover that holds both the oil seals )

Another thing to check while the cover is off the engine , there is a coller / bush which fits over the output shaft and which the oilseal runs on , look for any damage to the bush or any sign of a groove worn into the bush , if so then change the bush , there is also an "O" ring which fits behind the bush onto the output shaft , change the "O" ring as a matter of course

Change both oilseals and then reassemble in reverse order.

Parts needed , 2 new oilseals , " O" ring for bush / output shaft,new gasket for the inner cover , new lock tab for the engine sprocket.

While you have the bike stripped down to this stage it will also be worth you checking the state of the rubber grommet that seals around the alternator wires where they come out of the alternator cover because this is also a common oil leakage problem on Zed motors
, if the seal is knackered it would be worth changeing it at the same time because the sprocket cover , gear lever and footpeg also have to be removed to fix the grommet , so you may well save yourself having to remove the same parts to fix it at a later date.

[d123456789p]

The zedsintheshed
Thats quite a comprehensive description of the job and as soon as I get back to UK I will do just that......cheers

Ted1r
The MOT station was 3 miles from home and there was no leak then, once on the side stand the contents were all over the floor in half an hour, bearing in mind the oil was hot and thinner than cold