| MICHV8 | -- 07-14-2018 @ 11:27 AM |
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I’m having a problem with gear grinding (new pressure plate and clutch from Fort Wayne Clutch) when trying to shift my 59AB and 39 Merc trans. I’ve extended the pedal yoke as far as I can while still getting the pins inserted and still can’t get in gear. The rear wheels are off the floor and do not rotate when engine running in neutral so I don’t think it is a flywheel/disk stuck issue. Any debugging ideas? Thanks for the help.
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| shogun1940 | -- 07-14-2018 @ 2:59 PM |
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Withe the car in neutral and running and the wheels jacked up do you hear the the input gear turning the clutter gear and does it stop when you push the clutch in? If you do not hear an different sound then i would say the clutch is not disengaging.
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| 40cpe | -- 07-14-2018 @ 3:16 PM |
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With the clutch return spring attached, do you have the spec'd 1"-1 1/2" free play? More or less? Did you push the clutch release arm forward with your hand before attaching the clevis?
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| MICHV8 | -- 07-14-2018 @ 3:24 PM |
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I can't move the clutch release arm with anything other than the clutch pedal connected to the yoke...I simply can't get any leverage to move it. Does the fact that the wheels are not turning rule out a stuck flywheel/disk? If it does rule out a stuck plate, then I assume the arm travel is the problem? I'll try to listen for a change when I depress the clutch, but it is a little noisy This message was edited by MICHV8 on 7-14-18 @ 3:31 PM
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| woodiewagon46 | -- 07-14-2018 @ 3:40 PM |
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Could you have put the clutch disk in backwards?
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| 40cpe | -- 07-14-2018 @ 4:29 PM |
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The wheels not moving in neutral is normal. The transmission is the disconnect in this case instead of the clutch. How much free play do you have in the clutch pedal?
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| MICHV8 | -- 07-15-2018 @ 7:14 AM |
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I'll measure the free play it today (I have the yoke threaded out as far as I can and still get the pins in). Just so I understand...the clutch plate could still be stuck to the flywheel even though the wheels are not turning with the trans in neutral?
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| 40cpe | -- 07-15-2018 @ 11:54 AM |
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The transmission is between the clutch and the rear wheels. If the transmission is in neutral the clutch has no effect on turning the driveshaft. It can be stuck, engaged, or released and the engine can't drive the rear wheels. As allenwoodie said, the pressure plate could be in backward. There is a hub on one side that has to face the pressure plate, otherwise it will drag the flywheel.
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| MICHV8 | -- 07-15-2018 @ 1:12 PM |
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I didn't install the clutch disk...is there a way to tell looking through the access plate? I had the plate off with the engine running in neutral and could see the disk spinning along with the pressure plate. When I pushed the clutch in, I could see the clutch disk slow down enough to see the internal disk springs, but it did not slow down completely. Would increasing the pedal throw cause the disk to stop completely? If I could get enough leverage on the clutch arm, I could thread the yoke out farther, but I can't move the clutch arm with my hand...too much resistance.
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| sarahcecelia | -- 07-15-2018 @ 1:49 PM |
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I was a top mechanic for vw, and then Buick. The customer complaint was the car was grinding when it was shifted into 1st gear, and 1st gear was sychronized in them after 1960,and the customer had a car with a fully synchronized trans. That was 100 % of the time, a dry mainshaft! You have to get to the main shaft and just put a "dab" of grease on it. On the VW it was easy. With the car on the lift, about 2 feet or so off the floor, I just pulled the engine back about a half inch, with the four mounting bolt nuts off, then with the car on the lift; I put a "dab" of grease on a long screw driver,and turned the left rear wheel with my foot as I touched the grease on to the shaft. Push the engine forward , install the four nuts on the mount bolts, tighten them up and done. This will give you an idea of what to do.You see, when that shaft is dry, the clutch disc can't slide back away from the flywheel. When that happens it keeps the shaft turning, and then the gears are tuning, so they grind. Regards, Steve Lee
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| sarahcecelia | -- 07-15-2018 @ 2:02 PM |
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Aha!! See my reply a bout a dry mainshaft!! Sounds like your clutch is turning that shaft causing the grind! It seems like you failed to lube the mainshaft so the clutch won't fully release.You have an access plate which should make it a very easy fix. Mind you if you lube that shaft, don't overdo it. You don't want that grease on the clutch disc!! Just a "dab," it will spead itself to all of the splines automaticly, because every time you"clutch it" that disc lands on a different position on that shaft" Regards, Steve Lee
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| Chascwell2 | -- 07-15-2018 @ 4:32 PM |
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Could be a transmission input shaft pilot bearing in the flywheel that needs replacement chascwell
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| TomO | -- 07-16-2018 @ 7:41 AM |
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This question was asked before, how much free play do you have before the throwout bearing touches the pressure plate fingers? If your freeplay is less than 1 inch, check for excess play in the pedal bushings and the cross shaft bushings. If the bushings are not worn, you will have to remove the transmission to check that the pressure plate fingers are adjusted correctly and that the springs on the disc are not hitting on the flywheel bolts. If you have a 10" clutch, you will have to remove the engine to check the clutch as the poil pan has to be removed in order to service the clutch. Tom
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| MICHV8 | -- 07-16-2018 @ 11:54 AM |
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Tom() et al I have about 1-1 1/4 inch freeplay before the throwout bearing (new...pilot bearing is new as well) moves. I will try to add a dab of grease and see if that helps Thanks everyone
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| MICHV8 | -- 07-16-2018 @ 12:41 PM |
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Steve I can see the release bearing, but I can't see the input shaft splines... so is this dab of grease applied as close as possible to the clutch disk?
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| MICHV8 | -- 07-16-2018 @ 1:42 PM |
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Steve I could spot a small gap and maybe the tops of the splines so I worked a dab of grease in the crease and the clutch disk now stops rotating with the pedal in...she shifts real nice and quiet. Great job and thanks to all for the help.
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| supereal | -- 07-16-2018 @ 2:13 PM |
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It is, more than likely, either too much free play in the clutch pedal, or something preventing full travel of the pedal. One of our customers complained of grinding shifts, and it turned out to be that a floor mat had worked forward and was under the pedal just enough to prevent complete disengagement when the pedal was pushed. Wish all were that easy to solve!
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| woodiewagon46 | -- 07-17-2018 @ 6:59 AM |
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Mitch, lets go back to square one. Except for the clutch needing replacement was the car running fine before you replaced the clutch? Did you remove or take apart all the linkage? What else did you change? I'm still leaning towards the clutch disk in back to front. If you can see the transmission shaft and clutch disc, the clutch hub, (that rides on the input shaft), will be longer towards the transmission side, if in correctly. The short side needs to face the engine. Are the throwout bearing forks behind the throwout bearing? I can't imagine a simple clutch replacement having this much trouble. Usually when a clutch is replaced all you need to do is a simple adjustment. Sometimes people just use up the clutch and never adjust it so the stock adjustment works. Puzzling?
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| MICHV8 | -- 07-17-2018 @ 5:13 PM |
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I followed Steve's suggestion and everything is great...thanks for responding
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