Soldering starter contact bolt

grampsh1 · Apr 13, 2020

The field coil straps to contact bolt solder has let go what type of solder would you use to re attach
Thanks
Paul

Ted in NE-OH · Apr 13, 2020

Rosin core electrical solder and a big hot soldering iron. Loosen the bolt when soldering gives less of a heat sink.

Russ from MN · Apr 13, 2020

We had that problem with a starter on a JD 440 skidder, ended up getting it silver soldered to hold, regular solder wouldn't last.

Janicholson · Apr 13, 2020

Electrical rosin core solder is the only one that will leave no chemical residue to corrode the joint. The main ingredient is clean and fast. The clean part is necessary to assure good wetting of the components. Fast is not simple. A hot 450 watt (big) electric iron is needed. File the top of the stud to make a good flat surface for heat transfer. It can also be done from inside against a flat on the inside of the stud. The thing that is important is to heat to melt as rapidly as possible and avoid melting thee insulator around the stud. I have done it twice, and it worked. A propane adapter tip with a copper will also work. Jim
one that would work.

chuckinnc · Apr 14, 2020

Starter wires draw tons of amps and get red hot when cranking, regular solder will soften and come loose, use solder with silver content.

Steve@Advance · Apr 14, 2020

It can be soldered "if" you have the experience and right equipment, which I have neither.

Best taken to a starter shop.

David G · Apr 14, 2020

My dad used electrical solder, you need a BIG iron, he used propane torch.

pete 23 · Apr 14, 2020

Resin core. Same as factory. Need to remove all parts to properly clean and shine things up. The reinstall before soldering .

Took me several years to develop good method as no one else in
area was any help.

If it gets red hot you did a lousy job.

teddy52food · Apr 14, 2020

If the wires are getting red hot, you have a problem!

grampsh1 · Apr 14, 2020

Thanks for the help spent time on it today got it soldered need to finish putting back together have to connect brushes make sure all insulated wiring to brushes not shorted
Thanks again
Paul

Texasmark1 · Apr 15, 2020

95/5 hi temp is what we used in industry....95% tin/5% lead. Don't remember the melting temp but way above 40/60. HF has soldering irons up to 300 Watts. I have several in low to high wattage ratings...cheap and reliable. Perfect for working on what you are doing. Use plenty of "Rosin" flux....clean contact surfaces, good heat and put the heat to the connection and let the connection melt the solder, not the soldering iron melt the solder.....ok letting the iron get hot to clean up the tip and all before you start to get things primed, but for the final joint . If it flows smoothly it's good. If rough and chunky looking, or looks like a ball of Mercury sitting on a flat surface, or didn't flow out, not enough heat and will not work.

Soldering starter contact bolt

grampsh1

Member

Ted in NE-OH

Well-known Member

Russ from MN

Well-known Member

Janicholson

Well-known Member

chuckinnc

Member

Steve@Advance

Well-known Member

David G

Well-known Member

pete 23

Well-known Member

teddy52food

Well-known Member

grampsh1

Member

Texasmark1

Well-known Member

Similar threads