pressure plate question

redneckaggie

rebel w/o a cause
Joined
Dec 21, 2007
Posts
2,358
Reaction score
1
Location
angleton/stephenville tx
Took the truck to a local trans shop to figure out some issues that I have been having because I do not have tools nor time to pull the trans. problems were that the clutch was getting harder to push(not extrememly hard, just enough to notice) and there has been a squeeling coming from that area that stops as soon as any pressure was put on the clutch pedal.

little history- a clutch kit was put in the truck about 3-4 years ago(maybe 30,000 miles) because the dmf failed and I upgraded to a smf. when that clutch kit went in the fins on the old pressure plate from the dmf were bent irregularly, meaning that they were almost all different heights, when the tob was set on them only about 1/4 of them were touching it and the rest were bent down.

guy pulls the trans, calls and says I need a new clutch kit because the forks on this pressure plate are bent, I told him to let me come check it out and when I show up and place the tob across the fins of the pressure plate it is about 1/4 to 1/2 out of level compared to the surface of the pressure plate, but it is touching all of the fins so fins arent bent irregularly

question is what would cause this, the guy just wants me to throw another clutch kit at it and I cant see throwing expensive parts at it just to see if it happens again, seems to me something else must be wrong to cause this. I checked the sleeve that goes over the input shaft and the input shaft and none of them are scared or look irregular in any way.
 

redneckaggie

rebel w/o a cause
Joined
Dec 21, 2007
Posts
2,358
Reaction score
1
Location
angleton/stephenville tx
yes it is actually cheaper to buy a clutch kit rather than just the pressure plate. and I will just save the clutch for later use or if someone needs one for something, the clutch is like new. but I still dont get why the fins would wear more to one side than the other, the tob does ride on all the fins, just sits cocked to one side more than the other
 

typ4

Full Access Member
Joined
Dec 24, 2005
Posts
9,131
Reaction score
1,431
Location
Newberg,OR
were any bolts loose?? trans, mount, so on also check the throwout fork and pivot, I would replace it, my clutch guy says it is common. Just got off the phone with him.
 

icanfixall

Official GMM hand model
Joined
Apr 10, 2005
Posts
25,858
Reaction score
682
Location
West coast
The fins or fingers as I have known them to be called are getting worn out. They may have heated up and lost some pressure so replace the plate at the very leats. Think about how deep you are into this problem. Not changine everything is going to cost you in the long run if and when a used part lets go unexpectely. I hate throwing new parts at a problem that may or may not fix something but saving the used good parts is a gret idea too... Spares are good to have around...
 

redneckaggie

rebel w/o a cause
Joined
Dec 21, 2007
Posts
2,358
Reaction score
1
Location
angleton/stephenville tx
actually the top two bellhousing bolts were left out by the shop that did the last replacement and I put them in about 6 months ago when I finally noticed it, other than that the guy didnt mention anything else. I am going in with a new fork but the parts store can not find a new pivot ball I would love to have new everything under there but the parts stores are telling me the pivot ball, and the sleeve over the input shaft are discontinued items so if you know of where to get them that would help alot
 
Last edited:

redneckaggie

rebel w/o a cause
Joined
Dec 21, 2007
Posts
2,358
Reaction score
1
Location
angleton/stephenville tx
Ok finally found the pivot ball and it will be here thursday. got the flywheel from the machine shop and they said that it had a couple thou worth of run out in it. I also tried to ask them to balance it but they said without the whole engine it was impossible because there was a counter balance on the flywheel and they did not know the specs to balance it to for the engine??? Is that true???
 

redneckaggie

rebel w/o a cause
Joined
Dec 21, 2007
Posts
2,358
Reaction score
1
Location
angleton/stephenville tx
Picked it up today and everything seems right, no squeel, no hard pedal, nothing out of the ordinary, little bit of gear lash noise at idle.

Grand total was
280 for a luk 12" clutch kit
23 for a clutch fork
30 to have the flywheel resurfaced
200 for labor

All in all Im happy
 

Latest posts

Forum statistics

Threads
93,029
Posts
1,156,233
Members
26,618
Latest member
Nathanelliott44

Members online

Top