Couple of weeks ago my clutch stopped disengaging (85 4cyl 5 speed Isuzu) found it was a bad master, replaced it bled and all was fine. Last night it stopped working again. Slave seems to have lots of movement. Lost on what to look for, any ideas on what is going on would be great.
take a look at the picture of my clutch in this thread: bad clutch you may need a new clutch, mine would not shift into 1st or reverse with engine running if I tried to start with it in gear, the car would move
[This message has been edited by ZaraSpOOk (edited 11-22-2012).]
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10:15 PM
Patrick Member
Posts: 36516 From: Vancouver, British Columbia, Canada Registered: Apr 99
Yes the gears work fine when not running & if I push in the clutch and try to start the car moves.
Well, if you're actually getting 1.5" of travel at the slave, I'm afraid you might have some sort of mechanical problem (other than hydraulic) such as ZaraSpOOk provided an example of.
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10:34 PM
imabaddude Member
Posts: 94 From: Braidwood, IL, US Registered: Sep 2012
My Fiero is an automatic, so not sure about this, but when I had my 931 the master cylinder for the clutch went failed and sent crap down the line that destroyed the slave cylinder. When I took out the slave I could see all kinds of little bits of crud and gasket from the master that had worked it's way down there.
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11:07 PM
Nov 23rd, 2012
phonedawgz Member
Posts: 17091 From: Green Bay, WI USA Registered: Dec 2009
I had a clutch fork failure of this type. the fork fatigued (It didn't seem like a very strong design in the first place). I welded new steel into it to make it very robust.
I had to remove the engine/tranny obviously.
If you get rid of the slave and push the cup by hand does it feel springy (IE is the pressure plate there and ok)?
Chay
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01:50 PM
race9887 Member
Posts: 97 From: Balgonie, Saskatchewan Canada Registered: Mar 2012
Thanks for the help, I am in the middle of a Saskatchewan snow storm -21 C with the wind feels like -30 C and no garage, going to be nicer next week. Look into it then and keep you guys posted.
Thanks for the help, I am in the middle of a Saskatchewan snow storm -21 C with the wind feels like -30 C and no garage, going to be nicer next weekJune. Look into it then and keep you guys posted.
Okay, gotcha!
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09:07 PM
Nov 27th, 2012
race9887 Member
Posts: 97 From: Balgonie, Saskatchewan Canada Registered: Mar 2012
Got warmer (-12 C) and got a chance to look at a few things. The clutch fork lever is pushed almost to the bellhousing. I thought that all the fork levers had a notch machined in them to keep the lever from slipping
But it does not appear that this tranny is like that, I am thinking that the lever just slipped on the shaft. Look into it better on the weekend my Mechanic (Dad) is working nights till Saturday and won't be any help till then.
The bolt is still there, looks like it goes to the outside of the shaft. No idea Patrick what that groove is for, just took the pic.of the net cant find anything on how the isuzu is set up. ------------------ Our projects
Fieros: 85 Coupe, parts car 86 SE(everything except automatic), 86 SE 3800 Series 2 conversion car.
That's where the release lever pinch bolt passes through. In this picture borrowed from BuddyCraigg, you can see it on the bottom of the release lever about midway up the left side of the transmission. This is a Getrag, but all Fiero manual transmissions are arranged this way. The release lever is mounted onto that end of the shaft.
[This message has been edited by fierofool (edited 11-27-2012).]
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10:19 PM
race9887 Member
Posts: 97 From: Balgonie, Saskatchewan Canada Registered: Mar 2012
I have seen both the 4speed and 5 speed Getrag and this is not quite the same set up. The lever looks to be made from flat bar formed to the correct shape. I will see if I can get a good photo in the morning.
Yes, some of the release arms were made of stamped steel and others were forged or cast. The Fiero Store has one of solid steel, but they are all interchangeable. http://fierostore.com/Produ...spx?s=64300&d=85&p=1
The forks of the 3 manual transmissions are also different. Designed to hold the transmission specific throwout bearing. The one you show in your pic appears to have a smooth end. Every one I've seen were splined on the end to assist the pinch bolt in holding the arm in place.
or you could have the problem I have, the input (or is it output) bearing to the tranny has a flange on it that holds the TOB, mine broke off (seperated form the bearing) and was preventing the clutch arm from fully moving! it caused my TOB to break off one of its ears. Those of you reading my thread (THIS ONE may be interested to know it wasn't the clutch that was bad (although a couple springs were eventually braoken) nor even the Throw Out Bearing, it was the #@%* sleeve on the input of the tranny that caused my failure!!!
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04:47 PM
Dec 2nd, 2012
race9887 Member
Posts: 97 From: Balgonie, Saskatchewan Canada Registered: Mar 2012
Well it was the lever slipping on the fork shaft, the splines are worn and there is no notch for the pinch bolt to pass through. We tightened up but that didn't work so out can the welder and now all works. Hope I get my 3800SC into my 86 SE before I have to remove it.
