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1976 Chevy C10 Starter


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TravisH
User

Sep 7, 2017, 12:54 PM

Post #1 of 16 (734 views)
  post locked   1976 Chevy C10 Starter  

I have 76 Chevrolet p/u and just started noticing my starter makes a grinding sound when I first try to start it. I'm thinking the the starter is going out me. Inspected the flywheel/flex plate and was no unusual damage no missing teeth just the usual wear and tear from use. Thought I would ask and get a second opinion before replacing the starter.


Hammer Time
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Sep 7, 2017, 1:47 PM

Post #2 of 16 (728 views)
  post locked   Re: 1976 Chevy C10 Starter  

It's probably just a bad starter right now but if you keep driving it that way, it will soon need a flywheel too.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



TravisH
User

Sep 7, 2017, 3:20 PM

Post #3 of 16 (719 views)
  post locked   Re: 1976 Chevy C10 Starter  

Thankyou for getting back with my manual said as much too thought better ask. I'm sure starters doing that will eat the teeth right off a flywheel.


Tom Greenleaf
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Sep 7, 2017, 3:35 PM

Post #4 of 16 (715 views)
  post locked   Re: 1976 Chevy C10 Starter  

Mark "flywheel" and spin it with a pry bar one whole turn to see the gear with starter out you should be sure. Busted off teeth in one area would only do a screech grind every third attempt - at least if V8 they almost always stop in just one of 3 spots when shut off,
T



TravisH
User

Sep 7, 2017, 4:21 PM

Post #5 of 16 (698 views)
  post locked   Re: 1976 Chevy C10 Starter  

Hi Tom, I didn't remove the starter but did rotate the flywheel with a tool to inspect the teeth other than where two or three dinged teeth from engaging the stater after engine running stupid stuff like that is what I found no busted of teeth. Can you explain a little more about the starter gear and flywheel engaging at the end of your reply.

Travis


Hammer Time
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Sep 7, 2017, 4:44 PM

Post #6 of 16 (693 views)
  post locked   Re: 1976 Chevy C10 Starter  

The teeth don't have to be broken right off. The get worn down from the grinding and that causes more grinding.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Tom Greenleaf
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Sep 7, 2017, 4:48 PM

Post #7 of 16 (690 views)
  post locked   Re: 1976 Chevy C10 Starter  

I'll try. "Flywheel" is the "ring gear" on real flywheel or torque convert's flex plate. This starter has solenoid on top of it which throws the "starter drive" smaller gear toward the large one. That gear if you spin in by hand will only turn one way never both off truck or on it would be more of a hummm sound randomly at first.


IDK - need to look at teeth of each more likely IMO the "flywheel's" gear is at fault since you see some wear- issues with it. It's possible a new starter that 100% known comes with a new "starter drive" it would quit this noise? May not know till you try one doubt they are too costly remanufactured or if real clever you can replace just the "starter drive" knowing it's new is a little fussy to do on the bench.


What stinks is not hearing and seeing this in person. If shims used (you didn't say which engine doesn't matter I forgot already) take a thin one out and there's a paint type trick to see where gear rides and how deep on the flywheel gear.


You can replace just the "large gear" it's just heated and shrinks to tight up but trans is coming out and would let someone else with all grey hair do that as nobody would know what you are talking about anymore.
Hard to say. I'd try a ready to go reman starter just look hard at the little gear on a replacing that it shows nothing for marks and is new. Can't know if that would end the problem but if you keep grinding this you'll need both gears new,


Tom



TravisH
User

Sep 7, 2017, 5:08 PM

Post #8 of 16 (680 views)
  post locked   Re: 1976 Chevy C10 Starter  

I gotcha this just stated out of the blue hadn't done before till last week didn't drive it till this Tuesday and new not to drive it till looked into it further. Out of curiosity is the starter gear worn or the spring behind the gear become weak that would cause this?

Travis


Hammer Time
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Sep 7, 2017, 5:10 PM

Post #9 of 16 (677 views)
  post locked   Re: 1976 Chevy C10 Starter  

Could be either of those thing or the solenoid that pushes it just not strong enough.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Sep 7, 2017, 5:10 PM)


TravisH
User

Sep 7, 2017, 5:31 PM

Post #10 of 16 (672 views)
  post locked   Re: 1976 Chevy C10 Starter  

I understand now thanks Tom, luckily I didn't start it but 3 all together times since the first time it did the grinding noise. Tell you the truth the first time I thought it was operator error and it didn't always do it though. I will be installing a re manufactured starter and will pay close attention to the starter gear.

On the flywheel I didn't know or forgot that just the ring gear can be replaced thought you purchased the whole flywheel. I realize on big trucks semis the ring gear is replaced.
On this truck of mine to remove the flywheel couldn't the transmission be slid back on longer bolts to give access to the flywheel. Doing everything coming off just short of removing the transmission from the vehicle.

Travis


TravisH
User

Sep 7, 2017, 5:44 PM

Post #11 of 16 (662 views)
  post locked   Re: 1976 Chevy C10 Starter  

Alright Thankyou for getting back with me and answering my question.

Travis


TravisH
User

Sep 7, 2017, 5:51 PM

Post #12 of 16 (657 views)
  post locked   Re: 1976 Chevy C10 Starter  

Tom I should have mentioned that this truck has an automatic transmission TH350. Replacing just the ring gear was a new one for me not to say it couldn't be done. Appreciate yours and Hammer Times advice.

Travis


Tom Greenleaf
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Sep 8, 2017, 1:23 AM

Post #13 of 16 (631 views)
  post locked   Re: 1976 Chevy C10 Starter  

Travis: Storm coming could delay responses several regulars are potentially involved.
Forget rebuilding this stuff it's too common still for whole good replacement parts or should be still. Save that for when options are limited this being a GM truck parts for it should be available for ages more.
As Hammer said (just use (HT) is also fine, the small gear may not throw out far enough along with other base things that must be right. Sorry, forget the name of a paint to see where gears actually touch and alter or fix just that. IDK - if still messing with that would probably use paper "white-out" or something harmless.


Check - Parts should not be way too costly to just toss whole units just know they are bad and keep old stuff till known fixed then get any "core" charges back later.
You can watch starter work on bench or floor using even jumper cables throw the gear out and retract it's also greased to do so smoothly may be sticky or sticky now? Lots of things real nice with this to be looking right at it and just know it by looks and type of sounds too.


Trigger wire to solenoid connection could be weak. Clean all that stuff up and grease connections with proper greases - waterproof electric greases for all stuff rated also for high temps.
Enough for now. If this chooses one spot to grind and doesn't other times flywheel is probably too worn? It would coast over bad area with an extended crank period.


Your eyes and ears looking at anything odd matter now or already said you'll need both flexplate and the starter even the TH350 can be out without much trouble especially if 2X4 drive. If a center bearing for driveshaft take whole bearing out with it don't mess with that.


There should be existing pictures of good and bad parts to this all over the "web - images" searching around.
Naming parts I've used many as people call these things by nick-names that caught on just complicates searching for any pictures or video on what is good and what is bad.
One last not common thing is engine block area that holds starter is cracked! More on newer none to me personally. IDK if so you will know it and seek help on the fix if you save a chunk of engine if so - not as common just heard of it a couple times unsure if that can be fixed well or at all if so,
Tom



Hammer Time
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Sep 8, 2017, 4:39 AM

Post #14 of 16 (625 views)
  post locked   Re: 1976 Chevy C10 Starter  

Just buy a good reman starter and replace it.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



TravisH
User

Apr 11, 2019, 12:40 PM

Post #15 of 16 (45 views)
  post locked   Re: 1976 Chevy C10 Starter  

It’s been a while had some other things come up out of my control and couldn’t work too much on my 1976 Chevy pickup that you gave me advice. Been meaning to get back with you and let you know that I finally got that truck up running awhile back and driving.

Thavis


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Apr 11, 2019, 4:50 PM

Post #16 of 16 (35 views)
  post locked   Re: 1976 Chevy C10 Starter  

Well, I guess we can finally close this question.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







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