Bill, the slotted end went with some of the earlier brakes that did not have
a positive hold down, the ones with the adjustable peg that the shoe rested
against. Your car should have later model brakes, that have a "nail" type
hold down, so the slot is not required.
Best guess ... your car's brakes have been replaced before. The slotted end
will work fine with the later hold down design, it's just not required.
Randall
> I just received a new wheel cylinder unit from Moss, part #580-025 for my
> 1960 TR3A, TS67947L. The original Girling unit I removed from my
> 9-inch brakes
> has a piston with the slotted end extending from the cylinder,
> but the Moss
> unit has no slotted end and is practically flush with the cylinder body.
>
> Is it possible I was shipped an incorrect unit, or am I
> describing a brake
> system that does not fall within Moss's range for this part--TR3A
> from TS56377
> TR3B thru TR4 to CT5655 (wire wheels), CT5782 (disc wheels)?
>
> I'm assuming I need a cylinder that has a piston with a slotted end to
> contact the brake shoe, correct?
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