Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 07-26-2020, 03:03 PM   #1
asapguy
Senior Member
 
asapguy's Avatar
 
Join Date: May 2010
Location: Snohomish Wa.
Posts: 361
Default Clutch won't disengage

Just got back from helping a guy that just moved to this area from Montana. He has a nicely restored 29 special cp. with less then 300 miles since resto. A couple days ago he was going about 30-35 mph & down shifted to 2nd gear. Says his foot slipped off the clutch & he was jerked forward. Now the clutch won't disengage. I thought maybe pin sheared in clutch fork but the throughout bearing pushes in on the release fingers & everything looks OK. He had way too much free play so I took up the adjustment & the there is plenty of movement to release the clutch. With the rear wheels off the ground & motor running clutch peddle all the way down it just grinds if you try to put it in gear. I've had Model A's for over 60 yrs. & not had this problem. Any ideas?? Perry
asapguy is offline   Reply With Quote
Old 07-26-2020, 04:06 PM   #2
MAG
Senior Member
 
MAG's Avatar
 
Join Date: May 2010
Location: Austin, Texas
Posts: 798
Default Re: Clutch won't disengage

Remove the floorboard and the inspection plate. Rotate the engine with the crank and look for a Clutch Disc Torsion Spring out of place. If so, bummer!
Some clutch discs have "keepers" over the springs to keep them in place. Some have a internal projection that protrudes inside the spring. It is supposed to keep the spring from coming out. But, having had that experience, they will come out and lock the clutch up.
__________________
I noticed the harder I work the luckier I get!
MAG is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 07-26-2020, 06:00 PM   #3
Patrick L.
Senior Member
 
Patrick L.'s Avatar
 
Join Date: May 2010
Location: Upstate NY and western Florida
Posts: 5,829
Default Re: Clutch won't disengage

Sounds like Mag is on the right track.

Did the owner say if there was a difference in the amount of free-play when this happened ?
Patrick L. is offline   Reply With Quote
Old 07-27-2020, 09:57 AM   #4
asapguy
Senior Member
 
asapguy's Avatar
 
Join Date: May 2010
Location: Snohomish Wa.
Posts: 361
Default Re: Clutch won't disengage

He orig. had about 2" of peddle travel before throughout bearing contacted release fingers in the pressure plate. I adj'ed it to about an inch. The fork pushes the bearing in plenty far but the clutch plate never stops spinning. I called & told him to do what MAG mentioned.
asapguy is offline   Reply With Quote
Old 07-27-2020, 10:21 AM   #5
PC/SR
Senior Member
 
Join Date: May 2010
Location: Santa Rosa, CA
Posts: 1,182
Default Re: Clutch won't disengage

Try with the 2" or so free play. Try the easy stuff first, and either fix or eliminate that as a consideration.
PC/SR is offline   Reply With Quote
Old 07-27-2020, 10:42 AM   #6
Patrick L.
Senior Member
 
Patrick L.'s Avatar
 
Join Date: May 2010
Location: Upstate NY and western Florida
Posts: 5,829
Default Re: Clutch won't disengage

My question was whether there was a freeplay difference before and after the break/problem occurred.
Patrick L. is offline   Reply With Quote
Old 07-27-2020, 11:24 AM   #7
Jacksonlll
Senior Member
 
Jacksonlll's Avatar
 
Join Date: Jul 2012
Location: Michigan-- Member of Oakleaf of MARC
Posts: 1,474
Send a message via ICQ to Jacksonlll
Default Re: Clutch won't disengage

Inspect the clutch arm that the pedal linkage pulls on when you push down the pedal. It may be cracked. Common failure.
Jacksonlll is offline   Reply With Quote
Old 07-27-2020, 05:10 PM   #8
Chuck Sea/Tac
Senior Member
 
Chuck Sea/Tac's Avatar
 
Join Date: May 2010
Location: Between Seattle & Tacoma
Posts: 1,978
Default Re: Clutch won't disengage

Perry, we had 16 model A’s and lee’s 39 on tour Sat up to carnation. I got to wondering how you’re doing. Good to hear your out and about.
Chuck Sea/Tac is offline   Reply With Quote
Old 07-28-2020, 04:56 PM   #9
eagle
Senior Member
 
eagle's Avatar
 
Join Date: Aug 2011
Location: Eagle Bend, MN
Posts: 1,613
Default Re: Clutch won't disengage

As Jackson mentioned, the clutch arm can crack. It will appear to be moving the clutch as normal but won't have enough throw.
__________________
"There are some that can destroy an anvil with a teaspoon and shouldn't be allowed to touch anything resembling a tool."
eagle is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 11:58 PM.