Stuck clutch disc

1952 - 1968, M38A1, M170, questions, discussions, regarding anything related to the M38a1 series.
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bazookajoe
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Stuck clutch disc

Post by bazookajoe » Tue Jul 12, 2016 12:12 pm

Just finished a total resto on a 38A-1. Starts fine,runs great but when i went to put it in gear it was grinding like the clutch pedal was'nt pushed in, so i made the cable tighter but to no avail. I believe the clutch disc is stuck to the flywheel or pressure plate. I removed the floor plate and viewing port and can see that the fingers on the pressure plate are going in all the way but the clutch disc isn't releasing. Any ideas how to unstick it without removing the engine and tranny, I have had this happen to a couple of 151's but they are easy to unstick.


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Re: Stuck clutch disc

Post by Joe Gopan » Tue Jul 12, 2016 12:43 pm

Could also be the clutch pilot bushing. (rare) You can try this. Set the parking brake or get the bumper against a tree. Put it in third gear push in the clutch and hit the starter. You shouldn't have to do this on new work. Do not be surprised if the pilot bushing is too tight on the shaft and spins inside the flywheel.
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Re: Stuck clutch disc

Post by artificer » Tue Jul 12, 2016 6:01 pm

Check the clutch plate is in right way round.
The raised portion is toward the transmission NOT the flywheel.
John GIBBINS Member Institute of Automotive Mechanical Engineers [Ret], ASE Master Medium/Heavy Truck & Auto Technician USA -2002 Licensed Motor Mech NSW MVIC 49593 Current 2015
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bazookajoe
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Re: Stuck clutch disc

Post by bazookajoe » Wed Jul 13, 2016 11:52 am

The clutch disc isn't stuck, i can see its not turning when the pedal is pushed in so i think its gotta come out.

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Re: Stuck clutch disc

Post by dcartledge » Fri Jul 15, 2016 11:17 am

We had an issue with "shipping clips" left installed. Once we popped them off the clutch worked as it should.

Might want to check before you tear it all down,
d
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bazookajoe
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Re: Stuck clutch disc

Post by bazookajoe » Fri Jul 15, 2016 4:25 pm

Some dumass put the disc in backwards.....duh...problem solved and fortunately no damage,thanx for the tip. The springs on the clutch disc were catching on the bolts that hold the flywheel.

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Re: Stuck clutch disc

Post by artificer » Fri Jul 15, 2016 5:00 pm

some dumass put the disc in backwards....i think its gotta come out :roll:
John GIBBINS Member Institute of Automotive Mechanical Engineers [Ret], ASE Master Medium/Heavy Truck & Auto Technician USA -2002 Licensed Motor Mech NSW MVIC 49593 Current 2015
TO DIAGNOSE, TROUBLESHOOT OR FAULT FIND ANY AUTO SYSTEM....
Understand how system parts interact with one another. GOOD parts can then be established & the NOT GOOD problem/s part/s isolated for repair or replacement.


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