1994 gmc 4x4 Clutch Problem

Clutch started acting funny, Some times it would engage no problem, then the odd time real hard to press in pedal - No clutch. Now It is stuck -- no clutch. Can shift through gears with engine off
okay. Can shift on the go useing rpm's. Just can't put into gear from start -- clutch won't engage. Hydraulic fluid topped up okay. Anyone have same problem ?
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The clutch won't disengage. Have someone step on the clutch pedal while you are under the truck and can watch the slave cylinder. If it's full of fluid now, was it low before? you may need to bleed the system if it was real low.
Al
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Pull back the carpets, and look where the clutch pushrod goes in - is it wet? If so, it's time for a new master cylinder.
Look underneath - I THINK there's a small cover you pull off to get to the end of the slave (there is on mine, but it's earlier). Check for moisture when you pull back the end of the boot. If so, replace the slave.
(and for that matter - you might want to just replace both at the same time and call it DONE!)

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Bent or broken clutch fork.
Dave
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Could have a broken spring on the clutch plate. that causes it to jam. old john the springs are small and are in a circle around the clutch PLATE.
Hello, shemp311! You wrote on 16 Feb 2006 07:14:50 -0800:
s> Clutch started acting funny, Some times it would engage no problem, s> then the odd time real hard to press in pedal - No clutch. s> Now It is stuck -- no clutch. Can shift through gears with engine off s> okay. Can shift on the go useing rpm's. Just can't put into gear from s> start -- clutch won't engage. s> Hydraulic fluid topped up okay. Anyone have same problem ?
With best regards, snipped-for-privacy@comcast.net. E-mail: snipped-for-privacy@comcast.net
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shemp311 wrote:

================Shemp.....
git yerself a buddy to sit in the truck......
take the cap off the clutch master cyl. ..........
take the slave cylinder off the tranny, leaving the hydraulic line attached to the slave cyl.
push the apply rod into the slave.....
holding preasure against the slave's apply rod... have yer buddy apply the clutch pedal with SLIGHT apply preasure and see if the clutch pedal will go down.
WARNING........be sure to YELL stop before the apply rod is extended all the way out of the slave, or you may pop the rod and the guts out of the slave. Remember..."slight" preasure on the clutch pedal so's he don't go slam'n his foot down and fubar'n a possibly, and likely, good slave cylinder.
REPEAT the above process a couple of times so's yer sure that the hydraulics ARE working ok.
IF.....the pedal goes down with this test, then the hydraulics are most likely ok...and the prob is INSIDE the bellhousing somewhere. Meaning....."there ain't no doubt...she's gotta come out"!!! The problem WILL be evident once the tranny is pulled and you've got a visual on the guts of the clutch assembly and related parts. Guess's...??...... fork.....bearing....preasure plate.....fubarred bearing retainer.
IF......the pedal DOES NOT want to move......then the prob is between yer foooot and the slave cylinder. The quickest way to isolate the prob will be to crawl under the dash and take a gander at the pedal linkage and work yer way from there to the slave. I'd start with a visual and then unhook the clutch master's apply rod from the pedal to see if the pedal itself had a bind due to worn bushings or pivot rods. If the pedal feels okay....take the hydraulic line off the slave cyl. and see if you can push the master cyl's apply rod in by hand. If you can't, then unhook the hydraulic line under the hood, at the master, and try to push the master's apply rod in again. These steps should isolate the prob quickly fer you.
hopefully helpfull
~:~ MarshMonster ~:~
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