|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
05-26-2017, 09:59 PM | #1 |
Senior Member
Join Date: Mar 2013
Location: New Zealand
Posts: 366
|
Stuck starter motor
The usually reliable starter motor in my '29 RPU has started sticking lately. It sticks in maybe one out of 10 starts and after rocking in top gear it un-sticks quite easily. Can anyone explain why it is doing this and what I should do to fix it? The search function didn't supply the answer.
|
05-26-2017, 10:13 PM | #2 | |
BANNED
Join Date: Apr 2017
Location: Lower Left Coast
Posts: 469
|
Re: Stuck starter motor
Quote:
__________________
Before Walmart you had to buy a ticket to the fair to see a bearded lady! |
|
Sponsored Links (Register now to hide all advertisements) |
|
05-26-2017, 11:16 PM | #3 |
Senior Member
Join Date: Sep 2014
Location: oroville calif
Posts: 893
|
Re: Stuck starter motor
check bendix shaft to see if its bent, if it is nudge it back till its straight
|
05-26-2017, 11:23 PM | #4 |
Senior Member
Join Date: Nov 2016
Location: VA
Posts: 569
|
Re: Stuck starter motor
Spray it good with brake cleaner. No oil should be on it. Make sure you press firm when starting. Partial start will lock it up.
|
05-27-2017, 12:36 AM | #5 |
Senior Member
Join Date: May 2010
Location: Southern California
Posts: 3,131
|
Re: Stuck starter motor
Remove the starter and inspect the starter ring gear on the flywheel. It should be seated flush up against the stop on the flywheel. Henry should have had the stop on the opposite side as each time the starter engages it wants to pull the ring away from the stop. Some repos do not sit tight on the flywheel and will eventually walk away and leave a space.
You can rotate the engine a few degrees at a time and drive it back into place with a hammer and a punch. Mine got so bad I finally had to remove the flywheel and have a new ring installed. I had the shop drill and tap in several places and secure it with set screws. Tom Endy |
05-27-2017, 05:39 AM | #6 |
Senior Member
Join Date: May 2010
Location: Southbridge, Ma.
Posts: 1,614
|
Re: Stuck starter motor
Sponsored Links (Register now to hide all advertisements)
|
05-27-2017, 07:03 AM | #7 | |
Senior Member
Join Date: May 2010
Location: NC
Posts: 2,975
|
Re: Stuck starter motor
Quote:
|
|
05-27-2017, 10:13 AM | #8 |
Senior Member
Join Date: May 2010
Location: Stayton, Oregon
Posts: 3,806
|
Re: Stuck starter motor
Could be a bad spot in the ring gear. If it is, starter may "stick" every time the engine stops on that spot on the ring gear.
__________________
Fred Kroon 1929 Std Coupe 1929 Huckster |
05-27-2017, 10:23 AM | #9 |
Senior Member
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
|
Re: Stuck starter motor
Coating the FLYWHEEL teeth with Wheel Bearing grease helps.
I learned that MANY years ago, workin' on Jaguars. Up to 1964, they had a very similar Inertia type drive. "Sometimes" when they would jist go "WHIRRR" & wouldn't engage, I'd jist RAP the starter, with a BIG HAMMER!--Never tried that, on a Model A???? Better get out of here, Folks might git tired of seeing my NAME! BUT, whut's a Guy do, whin sumbody asks for HELP? & a little "humor" to start their day?? Bill British?
__________________
"THE ASSISTANT GURU OF STUFF" Last edited by BILL WILLIAMSON; 05-27-2017 at 11:25 AM. |
05-27-2017, 04:53 PM | #10 |
Senior Member
Join Date: Mar 2013
Location: New Zealand
Posts: 366
|
Re: Stuck starter motor
Thanks everyone, I will do what you suggest. Beaufort (post #4) says no oil should be on it and Bill (post #9) says put some grease on the ring gear. Is that a contradiction or are they referring to different things?
|
05-27-2017, 05:20 PM | #11 | |
Senior Member
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
|
Re: Stuck starter motor
Quote:
Bill W.
__________________
"THE ASSISTANT GURU OF STUFF" |
|
05-27-2017, 05:27 PM | #12 |
Senior Member
Join Date: Jul 2011
Location: Redondo Beach, CA
Posts: 5,848
|
Re: Stuck starter motor
|
05-27-2017, 08:30 PM | #13 |
Senior Member
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
|
Re: Stuck starter motor
UR you a GLUTTON fer "PUNISHMENT"?---Cindy sez I have TOO MUCH time on my hands
Bro Bill
__________________
"THE ASSISTANT GURU OF STUFF" |
05-27-2017, 08:58 PM | #14 | |
BANNED
Join Date: Feb 2015
Location: East Central Iowa
Posts: 1,275
|
Re: Stuck starter motor
Quote:
We love ya, Bill..
__________________
Good enough.. Isn't. |
|
05-27-2017, 09:31 PM | #15 | |
Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
|
Re: Stuck starter motor
Quote:
I don't drive my Model A when the temps drop below 40*, so a coat of light oil on the helix won't bother the engagement. It one was to use heavy oil, then you'd have to click the starter several times to make the drive move up the helix. Or, you can just use the hand crank. |
|
05-27-2017, 10:41 PM | #16 |
Senior Member
Join Date: Mar 2013
Location: New Zealand
Posts: 366
|
Re: Stuck starter motor
I have taken it off now - see the attached 3 pics. There is a very small amount of grease on the spindle (the spindle is that small cog, right?) and plenty on the helix but there does not appear to be any grease on the ring gear. Can you see anything in the photos that indicate the cause of it sticking? The shaft does not appear bent when I rotate it.
|
05-27-2017, 11:32 PM | #17 |
Senior Member
Join Date: Mar 2013
Location: New Zealand
Posts: 366
|
Re: Stuck starter motor
And a related question: When I took the starter-motor off, I decided to take its front cover off to look inside (it was a dumb thing to do, because I don't know enough about electrics to identify any problems anyway). And when I tried to re-assemble it I got frustrated trying to spread the spring-loaded brushes apart far enough to slip them back onto the bronze thing that rotates inside them. I am sure there must be an easy way of doing this? Sorry, I don't know the correct name for the bronze thing that rotates.
Last edited by Mad Mac; 05-27-2017 at 11:38 PM. |
05-27-2017, 11:33 PM | #18 |
Senior Member
Join Date: Nov 2016
Location: VA
Posts: 569
|
Re: Stuck starter motor
hit it with brake cleaner and wipe it down...you will be fine.
|
05-28-2017, 12:02 AM | #19 | |
BANNED
Join Date: Apr 2017
Location: Lower Left Coast
Posts: 469
|
Re: Stuck starter motor
Quote:
Now, there are tricks to getting the brushes spread wide enough to slip it back onto the commutator which usually depend on small pieces of wire and holding your tongue just right. The way I always did it was to slide the armature a bit out of the end you took the plate off of and use cut coat hanger pieces to hold the brushes back enough to get the cap back on the armature shaft, then remove the wires and slide the whole thing back together. You can make little right angle hooks, slide the brush back in the holder, slip the hook into the copper wire on the back of the brush and bend it over the edge of the end cap to hold it. Do not slide it through the spring as that may not hold the brush in the guide.
__________________
Before Walmart you had to buy a ticket to the fair to see a bearded lady! Last edited by RawhideKid; 05-28-2017 at 12:04 AM. Reason: spelling |
|
05-28-2017, 12:51 AM | #20 |
Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
|
Re: Stuck starter motor
I usually pull the 4 brushes back far enough to cock them in the holders, so they aren't actually in place. Then I can slip the end plate on and bolt it in place. Then I use a hook to left each spring and slip the brush into the holder. Be sure the springs are centered on the brushes, or the brushes will wear at a slant.
Clean the grease off the helix, and you should be good to go. I like a bit of thin oil on the helix to make sure it doesn't rust. |
|
|
Sponsored Links (Register now to hide all advertisements) |
|