I just bought a 1993 7.3 diesel F250 yesterday to go with my 89 7.3 with a blown engine. The 93 is a turbo and had the clutch completely go out. It spins and I'm afraid it may have damaged the flywheel but I'm not sure yet. The trucks appear almost identical except the 4 years apart. I have a few main questions:

Can/should I use an old clutch on the 89 which has 90k miles on it? If not is there a preferred clutch that I should get for this truck. I pull horses boats and other big stuff so I am looking to replace with all super duty parts.

Is there anything special involved in changing the clutch, I know the 4WD transfer case will have to come out and the transmission too but are there any special tricks or difficulties to expect?

 

No special tricks just work. Unless I am mistaken your 89 will have the same clutch and flywheel dualmass setup. This is going to sound stupid but does it try to pull, is there any noise or vibration from the clutch. The reason I ask is that I have towed in vehicles with a bad clutch onlt to put the tcase back in gear and the customer drive off.
If you replace the clutch I would replace the flywheel too as that is usually what goes bad.

 

The clutch just spins but I have not tried putting it in gear yet. I am on the road now en route to pick it up and tow the 93 to the same location as the 89. The guy I bought it from said that it moves a little bit when in gear but the clutch just spins when its idling and I'm worried that it may ruin the flywheel. After looking at parts on Auto Zones website I'm pretty confused about what I should get. My friend suggested a new LuK clutch and flywheel but that stuff is like $700 at least. I will know much more when I get everything dropped out of it but I am hoping to spare myself large expenses by using the parts off the 89 wherever possible. I think the clutch itself may be something I shell out top dollar on but I'm hoping I can use the flywheel from one of the two trucks. I'll post more after I get the truck loaded and rolling.

 

The clutch has to spin while idling unless he is talking about when he has the clutch pedal depressed and it is not releasing.

 

Ok the clutch spins when in idle and it sounds like it is slipping around somehting or definitely making an unusual spinning noise. When i put it in gear it will catch for a very split second when letting the clutch out which moves the truck maybe 2 inches if I'm lucky. I just finally got it back to where the other truck is and I plan to begin dropping the tranny and transfer case. Is there any maintenance that I should plant to do on either while I have them out. I am planning to change the fluids but are there other important seals or anything I should have ready to go?

What would be the concerns with taking the old clutch out of my 89 and using it for my 93 instead of buying a new one?

 

ooh and buy yurself a handy 3 dollar alignment tool they will save you sooooooooo much time putting it back together.. thanks star lol

 

If you do not have any leaking seals now it should be good.
Check your vents while it is out and make sure they are clean free of obstruction.

 

if you can afford it i would put in a 12.25" solid mass flywheel. and clutch kit.

 

Dave knows the numbers to see if your flywheel is in specs, I think it is 5/8 travel, but maybe he will chime in.

 

5/8 is the service limit. at very least get it resurfaced.

 

Thanks for the extra info, I am almost finished with the job now. I replaced the dual mass flywheel with a solid mass flywheel that was bigger for the turbo, I believe it was 12.25, it was a LuK clutch and flywheel brand new for around $600. I have learned a ton doing this and it was definitely a bigger job than I should have taken on with my limited tools and no lift. The clutch flywheel and tranny are all in, the problem I am having now is with my master and slave clutch cylinders. I observed fluid all over the master cylinder and assumed it was blown. I tried to replace it now twice and both parts were so close it was ridiculous but one wouldnt fit the holes and the other was to thick to get a thread. After cleaning out the original it appears to still be in good shape. I cleaned it out pretty good and the left the original o-rings because i returned all of the incorrect parts already. I looked through everything and the slave appears to be in good shape too. I have another master from the 89 that does not fit the 93 but the slave does. The 89 slave clutch cylinder appears to have a bleed valve and the 93 doesn't. I have tried hooking both up and pumping the clutch but I can't seem to get the line to bleed. The original 93 master is in the truck after being thoroughly cleaned and I am pretty confident that I got the junk that was stopping it up out, it slides nice and clean now. How do I get the dot3 to bleed to the slave cylinder? Also how do I make sure the slave cylinder is properly bleed or filled?

 

fill the the clutch master with dot 3 brake fluid to the line on the inside. have someone else pump the clutch and there is an allen screw on top of the slave right next to the line going in. when you get the air out and your clutch still isnt right look under the dash and follow the clutch linkage there is a little tie rod end with a plastic piece and the plastic wears out so you dont get full pedal throw. screw the tie rod out so you have no play in the clutch linkage and bleed it again. then when the air is out just pump it a bunch and it should work great.

 

Dude - You are cool, you just saved me! I didn't even check that, or think of that. just saved a lot of time, money, & sanity!

thanks