Well, I tore apart the 97 F-250 PSD today, come to find pretty much as soon as I got under there that the bellhousing from starter mounting location all the way around to the reverse light switch boss of my ZF 5 speed was cracked about 14 inches of crack all together the piece was just barely hanging on, I got that out and figured I'm not going to waste my time trying to find a used unit thats gonna cost me 2-3 grand so I took it to a local welding shop, their gonna weld it up and I believe it will hold, then I took the pressure plate and disk out and they dont look that bad but the dual mass flywheel was totaled bad, seems the bolt circle on the flywheel where it bolts onto the crankshaft flange runs on a type of sealed ball bearing, well to say the least the seal was gone and half the bearings missing causing the remaining bearins to all to one half of the cirle thus making the flywheel spin off center and causing my terrible vibration, I dont know if me driving it home with this vibration sent the bellhousing on its way of if it was cracked before the dual mass crapped out, I cant believe the tranny doesnt have a detachable bellhousing, kinda pisses me off. but I need to get it back on the road and havent decided if I'm going to put another dual mass flywheel in it or buy a single mass flywheel set up, I dont know if the single mass will cause problems or what

 

A co-worker went with the single mass was is very happy with it. I have also read where others have had good luck with it and if I had to change one out, I would also go with the single mass.

alanscott


[link:ford-trucks.com/users/alanscott/|http://www.ford-trucks.net/users/alanscott/clubftesml.jpg]...Click!

 

I had vibration and heavy clunking and shaking of the engine at idle speed. Also a harmomic vibration at various other engine RPMs. The clutch went so I bought a LUK 12" with a solid flywheel. The truck had a dual-mass-flywheel. I unbolted the DMFW after removing it from the truck and found the springs were almost totally collapsed and nearly warn in two from rubbing on the back of the flywheel inside the DMFW. I was able to move the two masses in separate directions (by hand) over an inch at the outside.

With new system installed, vibration is gone, clunking and shaking at idle is gone. I do however hear a little more overall vibration at at the time of engage of the clutch at low engine RPM. It is a metallic sound and sound tinny rather than something large. I will have to track that down. Also, the inspection cover between the tranny and engine does not provide enough clearance for the seemingly thicker flywheel. It rubs on the FW.

Other than that, I am happy with my installation. It took me 2 days in the driveway of my home to make the change, but dollar wise, it was well worth it. Great clutch.

Ken

`89 F250 7.3ltr, ZF5spdOD 4x2

Ken - WB7QYB