Jump to content

Recommended Posts

Posted

Had new trolling motor Altrex and new (2) Hummingbird grafts installed at same time.   The bolts on trolling motor head and jack plate have oxidization    Any help would be greatly appreciated as  to where to look for problem

 

 

  • Super User
Posted

Oxidation or corrosion?

Could be several things if the fasteners are not 316 SST.

Dissimilar metals create electrical current creating oxidation before serious corrosion occurs. Aluminum is dissimilar to Stainless steel it needs to be sealed using a sealant like 3M 5200. Your TM motor has a zinc anode to be sacrificial protecting the less noble metals like aluminum, check the zinc anode.

WD-40 was developed for this issue, clean the oxides off use it.

Tom

  • Like 3
Posted

It also might be road salts causing filiform corrosion. Common in snow states & eventually shows up on most aluminum wheels. Usually looks like the image below when growing under a coated surface. The worm-like tendrils with some blistering are common identifiers. Will be a grayish brown, black or white growing under clear coat or on uncoated metal surface, usually steels, aluminum or magnesium.

IMG_0785Medium.png.2ab537dc97ce5fb52efc8b1bc30f706d.png

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    • No registered users viewing this page.


  • Outboard Engine

    Fishing lures

    fishing forum

    fishing forum

    fishing tackle

    fishing

    fishing

    fishing

    bass fish

    fish for bass



×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.