My rear clutch drum/input shaft assembly has about .020" of play and found this nifty video:
Since mine has the early thinner '834' clutch piston and associated diaphragm spring, is it worth upgrading to the later thicker piston and stronger later-style diaphragm spring to help minimize this play? How much slop in that assembly is too much? Is there any other way to reduce this slop other than replacing the piston?
John Cope also has a video about this. According to John if/when the piston comes too far out of the bore, it also tears the seals on the way back in and results in a no drive condition. This is a 727 only problem and only with a transbrake with big line pressure as stated in the video.
