You haven't by any chance had any fuel leaks or been bleeding the injectors all over the top of the engine and not cleaning it off, have you?
If you get diesel running off the back of the block it can drain down right over the clutch and soak that turkey down.
When I put my new engine in, I ran a bead of silicone over the cracks where the block, adapter plate and bellhousing join to keep that from happening. I didn't want to take a chance on messing up my nice fresh kevlar clutch
Before I tore mine apart , my old clutch was fuel soaked and did the exact same thing, trying to back up, even without the trailer was chatter central, then one night I was having trouble backing in blind side in a downpour and smoked the poo out of the thing and no more chatter after I burned it all off and worked ok after that, but when I yanked the engine, I put the rebuilt kevlar clutch in and that thing is nice even when backing up the 5er into squirrily camp spots.
I have to agree, the reverse gear is way too tall on these things. I don't know what the heck they were thinking . The zf5 for the gas burners has a much more practical ratio.
That tall reverse is the only thing keeping me apprehensive about going to a 3.73 rear end. With the 4.10 that reverse is tall enough when loaded, 3.73 I would think, would give the poor clutch a workout.
-------Robert
If you get diesel running off the back of the block it can drain down right over the clutch and soak that turkey down.
When I put my new engine in, I ran a bead of silicone over the cracks where the block, adapter plate and bellhousing join to keep that from happening. I didn't want to take a chance on messing up my nice fresh kevlar clutch
Before I tore mine apart , my old clutch was fuel soaked and did the exact same thing, trying to back up, even without the trailer was chatter central, then one night I was having trouble backing in blind side in a downpour and smoked the poo out of the thing and no more chatter after I burned it all off and worked ok after that, but when I yanked the engine, I put the rebuilt kevlar clutch in and that thing is nice even when backing up the 5er into squirrily camp spots.
I have to agree, the reverse gear is way too tall on these things. I don't know what the heck they were thinking . The zf5 for the gas burners has a much more practical ratio.
That tall reverse is the only thing keeping me apprehensive about going to a 3.73 rear end. With the 4.10 that reverse is tall enough when loaded, 3.73 I would think, would give the poor clutch a workout.
-------Robert