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What changed that matters to YOU when replacing this unit?
The factory original unit had a smaller diameter piston, and the cup bore was a perfect fit.
Revision #1 had a LARGER diameter piston, and the ORIGINAL cup bore is to SMALL, if you try to force fit these, the plastic pin/cup will break.
Revision #1 requires the (BLACK) NEW/superseded pin/cup, for proper fit - function.
Revision #2 is a radical design change/complete kit, requires removal - discard ( as not needed) the old style pin/cup.
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Picture #1.
Shows the factory unit with the factory pin/cup, and revision #1 with the (BLACK) NEW/superseded pin/cup.
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Picture #2.
Shows revision #1 with the factory pin/cup pressed firmly in place, just short of breaking.
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Picture #3. shows
the factory unit with the (BLACK) NEW/superseded pin/cup installed.
Revision #1 with the factory pin/cup pressed firmly in place, just short of breaking.
Revision #2 with the pin stub installed.
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Picture #4 and #5.
Shows you the piston face.
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