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 08-08-2018, 12:23 PM   #1
victorsee
Junior Member
 
Join Date: Sep 2016
Location: Vineyard Haven, Ma
Posts: 4
Default Abrupt stop in reverse gear

A 'new' (to me) problem has emerged on my 28 Model A Tudor. I tried rolling the car out of the garage... it rolled about 2 feet and abruptly stopped; felt like a 'stick in the spokes'; I started the car and it moves forward in 1st gear; Put it in reverse and let out clutch gently and moves about 2' and jams/stops.
Turned off the engine; jacked up the rear end, and I could hand spin either/both rear wheels freely; left it jacked up, started engine, put car in 1st then second gear... wheels turned freely; put car in reverse, and wheels spin freely. Lowered rear off jack to ground, started engine, put in reverse and car abruptly stops after a 2' distance. OK, Could it be front wheels? doesn't feel like front; Jacked up front end, and both wheels spin easily forward and reverse.
Thought; suggestions; help?
Victor C
victorsee is offline   Reply With Quote
Old 08-08-2018, 12:30 PM   #2
Keith True
Senior Member
 
Keith True's Avatar
 
Join Date: May 2010
Location: Epping N.H.
Posts: 2,214
Default Re: Abrupt stop in reverse gear

Does the car have an overdrive installed?
Keith True is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 08-08-2018, 03:00 PM   #3
JohnTee
Junior Member
 
Join Date: May 2010
Location: Clinton, Tennessee
Posts: 9
Default Re: Abrupt stop in reverse gear

Saw a similar problem several years ago. Opening the rear end revealed several teeth broken off the pinion and several damaged teeth on the ring gear. Further investigation revealed that although the pinion preload nut and its corresponding jam nut were locked together by the "winged washer" they had not been properly torqued together to lock them to the threads of the pinion and were moving as a unit allowing the pinion to move in relation to its mesh with the ring gear until its mechanical limits were exceeded.
JohnTee is offline   Reply With Quote
Old 08-08-2018, 03:01 PM   #4
victorsee
Junior Member
 
Join Date: Sep 2016
Location: Vineyard Haven, Ma
Posts: 4
Default Re: Abrupt stop in reverse gear

Thanks for the response. No. No overdrive.
victorsee is offline   Reply With Quote
Old 08-08-2018, 03:07 PM   #5
victorsee
Junior Member
 
Join Date: Sep 2016
Location: Vineyard Haven, Ma
Posts: 4
Default Re: Abrupt stop in reverse gear

RE: broken teeth on ring gear.. this happened suddenly; the car has been driven regularly.. as late as yesterday without incident.. including in reverse. I parked in garage.. last night and found the sudden stop in reverse..taking it out of garage this am. No strange or different noises when usoing it yesterday. Would the have been a whine or grind sound?
victorsee is offline   Reply With Quote
Old 08-08-2018, 03:43 PM   #6
MALAK
Senior Member
 
MALAK's Avatar
 
Join Date: Jun 2010
Location: Highland, CA
Posts: 173
Default Re: Abrupt stop in reverse gear

I'm thinking it [might] be something with the e-brake. I know that my car will lurch to a stop when just rolling the car backwards, when applying the e-brake. But it won't do that going forward. I think it's the construction of the e-brake that it self energizes in the reverse direction.
Something else to check. Hopefully you find it. When you figure it out be sure to post it so we-all know.
MALAK is offline   Reply With Quote
Old 08-08-2018, 04:17 PM   #7
Terry, NJ
Senior Member
 
Terry, NJ's Avatar
 
Join Date: May 2010
Location: Bucks Co, Pa
Posts: 3,227
Default Re: Abrupt stop in reverse gear

I had a similar situation with my coupe only it was the pinion bearings. The bearing cages had disintegrated and the rollers were loose in the bottom of the banjo and now and then one would jump between the gears. I was driving 5mph and it almost put me through the windshield. I the embarked on one the most complex jobs one can do to an A. I put new rear gears in it! 3.54s to be exact and now I love it! Next time I try this, I will use 3.27s However, I have a set of 3.78s (Not the old, ruined ones) which I will sell for a reasonable price.
It's a lot of ball busting work and you can't do it overnight, but well worth the time and effort. Good Luck!
Terry




Quote:
Originally Posted by JohnTee View Post
Saw a similar problem several years ago. Opening the rear end revealed several teeth broken off the pinion and several damaged teeth on the ring gear. Further investigation revealed that although the pinion preload nut and its corresponding jam nut were locked together by the "winged washer" they had not been properly torqued together to lock them to the threads of the pinion and were moving as a unit allowing the pinion to move in relation to its mesh with the ring gear until its mechanical limits were exceeded.
Terry, NJ is offline   Reply With Quote
Old 08-08-2018, 05:30 PM   #8
wmws
Senior Member
 
wmws's Avatar
 
Join Date: Feb 2013
Location: Coatesville, Pa
Posts: 415
Default Re: Abrupt stop in reverse gear

When you have it jacked up will both rear wheels turn backwards at the same time.
wmws is offline   Reply With Quote
Old 08-08-2018, 06:13 PM   #9
Gary WA
Senior Member
 
Gary WA's Avatar
 
Join Date: May 2010
Location: Clinton,WA/Whidbey Island
Posts: 2,651
Default Re: Abrupt stop in reverse gear

I had same problem broken pinion teeth. I took magnet fished it in drain plug hole and brought out teeth.
__________________
www.whidbeymodelaclub.com
Gary WA is offline   Reply With Quote
Old 08-08-2018, 10:42 PM   #10
gustafson
BANNED
 
Join Date: Oct 2017
Posts: 128
Default Re: Abrupt stop in reverse gear

problem will be found in the diff, rest assured
gustafson is offline   Reply With Quote
Old 08-09-2018, 06:03 AM   #11
Tom Wesenberg
Senior Member
 
Tom Wesenberg's Avatar
 
Join Date: May 2010
Location: Mpls, MN
Posts: 27,061
Default Re: Abrupt stop in reverse gear

My 29 Tudor did the same thing when I bought the car.
Found one parking brake lining held to the band by 1 rivet.
Tom Wesenberg is offline   Reply With Quote
Old 08-09-2018, 06:38 AM   #12
victorsee
Junior Member
 
Join Date: Sep 2016
Location: Vineyard Haven, Ma
Posts: 4
Default Re: Abrupt stop in reverse gear

Thanks all for the suggestions; my first direction will be the rear brake /parking brake assembly.. its easier; if brakes check out, then pursuit of the rear end broken tooth or more. I cant recall if both rear wheels went turned together in reverse, i think they did. Is question related to broken teeth in pinion?
If rear end, I can't get to that until late September..

I will get back when its resolved with and update; In the meantime, thank you to all.. and happy driving!
victorsee is offline   Reply With Quote
Old 08-09-2018, 06:50 AM   #13
Synchro909
Senior Member
 
Join Date: Jun 2014
Location: Melbourne, Australia
Posts: 3,527
Default Re: Abrupt stop in reverse gear

Quote:
Originally Posted by gustafson View Post
problem will be found in the diff, rest assured
I agree - drain the oil from the deeferenchul and look for hard, shiny bits.
__________________
My Model A is not slow - it's buffering.
Synchro909 is offline   Reply With Quote
Old 08-09-2018, 07:59 AM   #14
Hoop
Senior Member
 
Hoop's Avatar
 
Join Date: May 2010
Location: Jacksonville FL
Posts: 949
Default Re: Abrupt stop in reverse gear

Check the pins with their cotter pins that hold the brake assembly together and make sure they are not installed backwards.

Definitely will snag, engage the brake and make you think you backed into a brick wall.

(Of course, if you want to remove and disassemble the rear end first .... )
__________________
"Remember that when it comes to intelligence, half of all of us are below average."
Hoop is offline   Reply With Quote
Old 08-09-2018, 08:33 AM   #15
JohnTee
Junior Member
 
Join Date: May 2010
Location: Clinton, Tennessee
Posts: 9
Default Re: Abrupt stop in reverse gear

You have a wise plan of action - check out the easy things first! For the benefit of everyone, please keep us posted on what you find. Have a great day.
JohnTee 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 11:09 AM.