Replacing the stud/bolt on a starter?

BigTone

Member
The treads on the bolt where the battery cable hooks to the starter are stripped bad, I can still get the nut on there enough to hold the cable down but can that stud/bolt be replaced? its on an M....thanks guys
 
yup steiners has the replacement bolt. also, if you have a starter repair shop near you, they will have it.
 
get a repair stud. all the GOOD mom n pop shops have them.

it's essentially a new short stud with a wide nut shaped base that is hollow and has threads inside it.. you screw it down onto the old stripped stud and then use the top of it as the new stud.

kinda like an oil drian plug repar plug..

I have one on a naa works fine..

soundguy
 
I have replaced many of those studs over the years, have to admit I never saw or heard of that repair stud you referred to. It took a while to develop a good method of doing the job as I could find no one to show or tell me how.
 
When in a bind and don't have a repair stud I use a coupling nut. Put nut on damaged stud and then bolt thru cable into coupling nut.
 
I acutally just found them in the steiners catalog, im going to check napa tomarrow but if i cant find one im going to my IH dealer..

You said you replaced them before, how difficult was it? any pointers?
 
The stud is insulated from the case & is soldered to the field coils. Takes a good hot soldering copper to do it.
 
The original stud is left as is. The repair screws down on the dammaged threads and stays in place as it is. Do not over tighten and twist the original in the case, as it will ruin the connection, or dammage the insulator. Jim.
 
The stud can't be replaced without some specialized equipment.

It is SOLDERED to the field coil. You need to get that big hunk of copper hot enough to melt the solder.

Most people have those useless trigger-pull "soldering guns" or wimpy little pencil soldering irons. Those tools won't even touch this job.

You need a big iron that carries a LOT of heat to quickly melt the solder without damaging the wiring inside the starter.

teddy52food mentions a "soldering copper" which is basically a giant soldering "iron" that you heat up in an oven, or with a torch. Most people don't have those just lying around.
 
The studs are not too hard to change using a torch. Make sure the field coil ends fit into the stud properly and are clean. Leave off all but the inside insulating washers and apply heat to the stud on the outside of the case. Once you have it soldered in you can add the other washers and nut.

I have use repair studs on Ford starters nut they have 5/16 thread. I have never seen one for the 3/8" stud that the Delco starters use.
 
I should have added that when you are having problems with the threads, most of the time the soldering inside takes a beating also and gets loosened from field coils. It is one of the main causes of poor starter performance on those old girls.
 

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