Reply to "Reverse gear - grinding noise"

Sig, there are two subtly different input shaft sizes in Panteras, by year. The clutch discs also vary. The spline on the early shaft is 1-1/16, 12 tooth (same as the Mangusta) while the later shaft is 1-1/8, 12 tooth. Most people cannot tell the 0.030" OD difference by looking at the shafts & matching discs- you must measure with precision tools.

It is possible to bolt an early clutch together with a late disc and it will function while rattling and possibly cocking sideways in operation. Adding an early disc to a late clutch assembly will be very tight if it assembles at all. I am always amazed by the ingenuity of non-Pantera mechanics in making things work that should never meet.

Another source of sticking is the throwout bearing (two models of those, too!) which slides on a steel ZF nose-piece. Wear sometimes raises a ridge on the underside of the replaceable tubular nose. Be sparing with any grease or solvents you put in there on the nose-piece and/or input shaft splines. If it somehow gets into the clutch, a perfect clutch may begin to slip under heavy load & cannot be restored, only replaced.