Master cylinder plastic level window

[Mr Bump]

Evening all,

Is it possible to get hold of a plastic level window for a gpz1100 anywhere? Mines all crazed and looks like it’s weeping a little.

Thanks,

Olly

[z1bman]

what size is the one fitted ?

https://www.ebay.co.uk/itm/18mm-Sight-M ... 0005.m1851

[z1bman]

some of the oil spy glasses on kawasakis are the same

[Mr Bump]

[quote="z1bman"]what size is the one fitted ?

Its a big one, about 23 mm. Most ones listed seem to be 10 or 18 mm.

Cheers, Olly.

[z1bman]

have you measured yours ? this one is 25 mm outside diameter 52005-1009

https://www.ebay.co.uk/i/332317148176?c ... 912&crdt=0

[Mr Bump]

Hello mister,

Had another look last night and pulled the master cylinder apart.

The aperture in the m/cyl casting is definitely 23mm, there’s an O ring in there too. As luck would have it i had a scrap gpz1100 clutch cover kicking abou with a sight glass in it which I’m pretty sure is the 1009 sight glass you’ve identified. If I cut the seal off around the outside of the glass the metal remaining looks like it’s a press fit in the m/cly casting.

Sealing may or may not work, the rear face of the seal which wouldn’t need cutting off would butt up against the back of the aperture, so with a bit of sealant it might work.

The 1009 seal is only a £10 or so, so I’ll probably buy one and give it a go.

I’m a bit surprised there isn’t a solution out there as I can’t imagine it’s a very rare failure (?).

I’ll let you know if it can be made to work.

Olly

[Mr Bump]

Nope, won’t work. With the rubber cut off it’s still too tight a fit, so ultimately the glass cracks.

Has anyone any ideas or advice please? I don’t really want to have to replace the whole master cylinder if I can help it.

If I do end up needing another one, does anyone have a suitable gpz1100b / z1000j master cylinder for sale, or is there an alternative or upgrade that works well?

Thanks,

Olly