rust on starter terminals

[GeorgeC]

Were the wrong kind of nuts used here?

 

[Dan Thomas]

Yup. The nuts are usually brass.

 

[Gary Ward]

My first thought…man
I want to spray something on those terminals…lol

 

[Dan Thomas]

Copper or brass nuts. The stud is copper, so a steel (iron) nut will suffer galvanic corrosion on it.

 

[GeorgeC]

For posterity, the terminals on the SkyTec are M8/1.25 and M4/0.7.

 

[bnt83]

Look like the nuts that came with the unit IMHO, just old an corroded. The case of the starter doesn't look any better.

 

[GeorgeC]

Look like the nuts that came with the unit IMHO, just old an corroded. The case of the starter doesn't look any better.

Sigh. It's *right* under the hinge on the cowling.

 

[GeorgeC]

The brass hardware sure is nice. Should I do anything about the superficial rust on the case of the starter?

 

[Gary Ward]

Not much but do put insulated boots or caps on the hot terminals.

 

[bnt83]

Brand new starter I bought two months ago from Chief. Silver cadmium plated steel nuts. The brand new FAA/PMA starter contactor from Aircraft Sprue came with the same nuts.

I could see spraying them with something like https://skygeek.com/ardrox-av-30-corrosion-inhibiting-compound-13-5-oz.html

 

[eman1200]

Were the wrong kind of nuts used here?

View attachment 122183

nut alergy?