79jasper
Chickenhawk
Ah, bummer. Lol I also couldn't remember if sd still had the dmf.no inspection port on a SD truck
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Ah, bummer. Lol I also couldn't remember if sd still had the dmf.no inspection port on a SD truck
Driveline vibrations are a bear sometimes. All pretty good advice. I would lean towards an input bearing or maybe a thrust bearing in the trans. ZF5’s like to eat the input shaft seal and start the downhill slide with a leak. Not sure about a zf6.
Around here, shops that do manual transmissions are hard to come by. The one I used is gone now and it’s a shame. They were really good and reasonable.
As for clutches, I’m an IDI guy with more than stock power and I’ve not really had any issues with my LUK single mass flywheel and clutch combo. For what that’s worth.
My experience. Bought my 97 zf5 about 8 years ago with 177k on the clock. It had a vibration mostly noticeable at highway cruise speed for me, 65-70 and anything close to 3000+ rpm was always a challenge like it just didn’t want to go there. Also with a heavy load, 15-20k lbs, in lower gears it was very noticeable. I did all the standard things but it never changed and figured it was trans related and I’d have to replace it some day.
Fast forward to 3 months ago, I’m pulling my 10k holiday trailer from TN to WA and the throw out bearing starts complaining. I decide it’s time for a complete clutch kit anyway since I’m at 245k now. Wow what a difference and I wasn’t expecting it. Vibration is completely gone and the truck revs so much easier and smoother.
Shop said a I had a bargain brand SMF and a broken spring. I went with a Luk SMF kit and couldn’t be happier, best $1300 I’ve spent in a while.
Bob
LUK the way to go, rid of the DMF!!
good point about the clutch fork. Known issue with cracking. The OP could remove the slave cylinder and measure the distance from the bellhousing opening to the fork. I'll have to look around for the correct distance on a working fork.