|The MGA With An Attitude
REAR WHEEL CYLINDER Doesn't Fit -- FT-044
Moss Motors part number 180-075
On 10/17/2010, Adam Prince of Honeoye Falls, New York, wrote:
"Replaced both rear wheel cylinders. The cheaper ones from Moss Motors were mismanufactured with too thick of a flange. Filed the flange down to fit".
Moss Motors offers two different rear slave cylinders. The more expensive one is 180-630 - Lockheed/Delphi. The less expensive one is 180-075 - aftermarket (made in Taiwan) and labeled "Classic Gold" (as Moss special manufacture). 180-075 is the one with the problem.
In photo above, space between the two white lines is a bit too narrow so the part does not fit on the brake backing plate. Photo below left shows the part that doesn't fit at top, and another part that was removed from the car (did fit). Red arrows point at the area with different dimensions. Photo below right shows Adam's solution, filing the surface that mates against the outboard side of the backing plate. Seems to me it may be easier to file the opposing surfaces (inboard side of the backing plate) across the ends as pointed out by white arrows in photo above.
Moss Motors has been notified of the problem (October 2010). They report there has been one other similar complaint in 2010. No telling yet if these are rare cases or if people are fixing the parts without reporting the problem.
Addendum September 2011: -- (Photos from Michael Kelly in Taylorsville, KY)
Here is another approach showing filing of the smaller opposing surface at the ends only (before left, after right).
Pictures below show the extent of motion where the cylinder slides in the backplate slot (paint removed).