Vehicle & Technical > Discovery

Transfer box drain plug leak - fixable?

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jnoshea:
Hi Guys,

As if I needed something else to go wrong  :lol:
After draining and refilling the transfer box yesterday I couldn't tighten the drain plug enough, it keeps slipping on the last thread. Of course, there's now a small puddle of EP90/80 on the road this morning. This must be a common problem, anyone know the best way to fix it?  I guess a new a drain plug won't do it, since it's probably the thread on the transfer box casing that's worn.

Cheers

Skibum346:
Did you put a new copper washer on it?

As you say the thread may be suspect but a new washer may be able to seal better.

Failing that, I'd suggest re, threading it... or getting someone who's a professional to do it... so that when the shavings end up in they oil... they have to pay for a new Tx box!

Skibum

daveyravey:
Sounds like the helicoil needs replacing.
10 min job if you have the right tool

jnoshea:

--- Quote from: "diamond dave" ---Sounds like the helicoil needs replacing.
10 min job if you have the right tool
--- End quote ---


What's a helicoil and what tool would I need?

daveyravey:
A helicoil is the threaded screw into which the drain plug fits.
I'm not sure where you'd get one nowadays, maybe difflock or similar

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