Re: H Starter short circuit

Posted by captaink on December 15, 2005 at 06:30:07 from (66.115.214.56):

In Reply to: Re: H Starter short circuit posted by Rock2k on December 14, 2005 at 20:29:20:

I’m not exactly sure what you need, so I will probably give you more than you are looking for.

This is from memory, but I believe that two brush arms share a pivot pin and mounting bracket on the cover of the starter. Behind each arm is a spring that holds the brush firmly against the commutator. There isn’t a lot of clearance between the brush arm and the commutator or the field housing of the starter, since the movement required for the brush arm is relatively minimal. The brush arm should not touch anything except the brush, the pivot pin and the spring that holds the brush against the commutator (armature). If the brush arm touches the commutator, a new brush may be all that is needed to correct this. The brushes normally extend about 3/16 of an inch between the arm and commutator.

The connection of the “grounding” brush is straight forward, braided wire to the end cap of the starter. The “hot” one may or may not be so straight forward. When you disassembled the starter, you should have had to remove two screws from wire leads or possibly a flat copper piece in order to get the end cap off. This is where the “hot” brushes connect. This may be a direct connection to the terminal on the starter or may be a “tap” off the field windings; I’m not positive on yours as starters can be made either way.

The power flow is from the terminal on the outside of the starter where the battery cable connects, through the field windings on the outside of the housing to two of the brushes (hot) through the commutator to the windings in the armature, out through the two grounded brushes. That being said, the connection of the “hot” brushes is actually made to the field windings or directly to the terminal on the starter. I have seen starters that have had an oversized flat screwdriver slot in the bottom of the terminal that the battery cable connects to and the field and brush leads were soldered into this grove. Possibly on yours, it may have gotten hot enough to melt this solder out and that is why you are not seeing where the connection is at.

Hope this helps, fire back if you have more questions…

Replies:

• Re: H Starter short circuit Rock2k 09:49:38 12/15/05 (1)
  • Re: H Starter short circuit captaink 10:10:14 12/15/05 (0)

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