1969 T100 Spacer Problem

Hello Folks,

I've been away from Triumphs for a while but am currently restoring a 1969 T100 into a sort of cafe racer. The crankcases were obtained as a pair but I'm wondering about the spacer which fits between the crankcase and the timing side main bearing. It's down on the parts book as a large diameter ring which fits between the outer race of the bearing and the crankcase, presumably to set the clearance for the opposing roller bearing. When I've tried to buy one it seems to be a small bevelled edge washer which fits around the crankshaft stub and would be too small to fit as in the diagram. Does this part (70-9503) actually exist as the recess for the bearing seems to be the same depth as the bearing itself, which would then be flush with the crankcase inner face?

confused, MikeJ

 

Hello Rocker, thanks for the tip! The part I'm after is No50 but having ordered one, it turned up as a smaller diameter part that wouldn't fit between the bearing and crankcase-it's a bit of a mystery as I've looked on ebay as well and the photo for that part number doesn't match the drawing on the parts book.

Cheers, MikeJ

 

Thanks almegro, I think it was only fitted for the 1969 bikes as the later parts books don't list it, so maybe they changed the casting. I'll check the assembled crank when I've got a few more bits to see,

Cheers, MikeJ

 

Hello Darkman,

The cases don't have a breather from the rear of the primary drive inner case so I'm guessing it has the pipe underneath. There is a pipe with a rubber grommet just behind the cylinders and extending into the primary drive chest. So there isn't an abutment ring on the '69 models? - that's a relief as they seemed a bit difficult to find!

Cheers, MikeJ

 

Hello, according to the parts book on Draganfly it certainly looks as though the part no 50 (listed as 70-9503) fits inside the timing side crankcase behind the bearing, so it's still a bit of a mystery-maybe a glitch in the parts book drawing? thanks for the info. about the timing tool bore though,

Cheers, MikeJ

 

Hello, according to the parts book on Draganfly it certainly looks as though the part no 50 (listed as 70-9503) fits inside the timing side crankcase behind the bearing, so it's still a bit of a mystery-maybe a glitch in the parts book drawing? thanks for the info. about the timing tool bore though,

Cheers, MikeJ

 

Hello, maybe Triumph tried to save money on the parts diagram books and used an older drawing with a wrong sized washer shown or maybe it was just an old fashioned mental glitch somewhere,

Cheers, MikeJ