ZF noise?
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Tuned
Joined: Mar 2007
Posts: 254
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From: Sacramento Ca
ZF noise?
Hello all:
Over the weekend I noticed a new noise in the truck. I am now getting more noise from the transmission. The noise is not very loud and is worst when I have the truck ideling in neutral. As soon as I push in the clutch, it goes away. I am concerned that I may be losing bearings on the input shaft. On the other hand, I know these gear boxes can be noisy in general. The truck has 95K on it. The trans / clutch has never been touched with the exception of an oil change 15k back. I use the truck to pull a 5th wheel so the entire truck gets a moderate workout on a regular basis.
Thoughts on what is going on?
Over the weekend I noticed a new noise in the truck. I am now getting more noise from the transmission. The noise is not very loud and is worst when I have the truck ideling in neutral. As soon as I push in the clutch, it goes away. I am concerned that I may be losing bearings on the input shaft. On the other hand, I know these gear boxes can be noisy in general. The truck has 95K on it. The trans / clutch has never been touched with the exception of an oil change 15k back. I use the truck to pull a 5th wheel so the entire truck gets a moderate workout on a regular basis.
Thoughts on what is going on?
Thread Starter
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Tuned
Joined: Mar 2007
Posts: 254
Likes: 0
From: Sacramento Ca
Hello all;
After driving the truck a short distance last night. I got to playing with the noise a little. It has gotten distinctly louder over the weekend. It is a smooth sound like a wherring. Thats what makes me think of bearings. On other vehicles, I've lost clutches, had 2 piece fly wheels come apart, ate throw out bearings, knocked springs out of clutches, etc. This is not like that. I am thinking this is in the trans, not the clutch.
How difficult is it to put a set of bearings onto the input shaft of the trans? Anywhere I can look to get instructions? Anybody done this before? I would prefer to not have to pay for a complete rebuild as the prices I have seen are around $2000. That leaves me doing it my self or finding a junk yard special.
Thoughts?
After driving the truck a short distance last night. I got to playing with the noise a little. It has gotten distinctly louder over the weekend. It is a smooth sound like a wherring. Thats what makes me think of bearings. On other vehicles, I've lost clutches, had 2 piece fly wheels come apart, ate throw out bearings, knocked springs out of clutches, etc. This is not like that. I am thinking this is in the trans, not the clutch.
How difficult is it to put a set of bearings onto the input shaft of the trans? Anywhere I can look to get instructions? Anybody done this before? I would prefer to not have to pay for a complete rebuild as the prices I have seen are around $2000. That leaves me doing it my self or finding a junk yard special.
Thoughts?
Postmaster
Joined: Mar 2005
Posts: 2,949
Likes: 6
From: Earth
The noise you're hearing may be gear rollover. It's normal with a ZF, although I saw a ZF service manual that said a two-stage clutch will quiet/eliminate it. The ZF I swapped into my Bronco (with a low-end Zoom clutch set) makes the same whirring bearing type noise.
Which begs the question, what the heck is a two stage clutch and where can you get one? Is there an equivalent aftermarket replacement available?
Which begs the question, what the heck is a two stage clutch and where can you get one? Is there an equivalent aftermarket replacement available?
Postmaster
Joined: Mar 2005
Posts: 2,949
Likes: 6
From: Earth
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