LT77 5 speed leak - Copper washer or not ???

AH-4x4 · Mar 14, 2022

Hi, following a fluid change on my LT77 gear box I have developed a leak on the drain plug. I can’t remember if there was a copper washer there but on the parts diagram its doesn’t show any. Is this correct ???

When I looked up parts for the LT77 I see on eBay that people sell a kit with a copper washer ( FTC 4112 ). If correct does the copper washer go between the fabric washer and the drain plug or between the fabric washer and the gear box face?

freelance · Mar 17, 2022

One or the other, not both

v8250 · Mar 17, 2022

As per @freelance . I prefer copper washers and a wrap of gas PTFE around the thread.

flat · Mar 17, 2022

You don’t use both. I use the copper washer and re-anneal it each time but you can use whatever you fancy - copper or fibre - they both do the same job

kevstar · Mar 17, 2022

Just done mine used fibre no leaks.

AH-4x4 · Mar 21, 2022

Thanks all, maybe i need to check the torque setting on the drain plug to stop the leak... the books noted 51 Nm. Seem high..!!!

LT77 5 speed leak - Copper washer or not ???

AH-4x4

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freelance

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v8250

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flat

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kevstar

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AH-4x4

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