Differential drain plugs and Loctite.

brianconwy · Nov 15, 2018

I want to change the oil in the front and rear diffs. Rave says to use Loctite 290 on the drain plug threads when replacing. I actually have Loctite 270 in the garage. Do you think the 270 would do the job or should I wait till I have 290?
http://www.loctite.co.uk/loctite-4087.htm?nodeid=8802623848449

http://www.loctite.co.uk/loctite-4087.htm?nodeid=8802623619073

Thanks.

The Mad Hat Man · Nov 15, 2018

brianconwy said:
I want to change the oil in the front and rear diffs. Rave says to use Loctite 290 on the drain plug threads when replacing. I actually have Loctite 270 in the garage. Do you think the 270 would do the job or should I wait till I have 290?
http://www.loctite.co.uk/loctite-4087.htm?nodeid=8802623848449

http://www.loctite.co.uk/loctite-4087.htm?nodeid=8802623619073

Thanks.

never bothered - very few weep, as they are a tapered thread..... and if they do, it shows there is some oil in there. ....providing it is not excessive.

brianconwy · Nov 15, 2018

Thanks. I will stick a bit of the 270 on, as I already have it.

Rob 90 · Nov 15, 2018

PTFE pipe thread tape works well also I use it on the gearbox / transferbox top up plugs also.

brianconwy · Nov 15, 2018

I am assuming it is more to stop it coming undone than anything, so the plug doesn't work its way out and lose all the oil.

The Mad Hat Man · Nov 15, 2018

brianconwy said:
I am assuming it is more to stop it coming undone than anything, so the plug doesn't work its way out and lose all the oil.

Never known one come out. As I said, the thread is tapered

brian47 · Nov 15, 2018

Unlike the fill/level plug which is flanged and can be done up tight, the drain plug is tapered so that when it's fully in place nothing, or very little protrudes from the axle case which could be at risk of being struck and dislodged when driving off-road.

lynall · Nov 16, 2018

I think you will find loctite 290 is a bit like the old red hermetite

I remove and refit hundreds of taprred level and drain bungs at work each year, none ever get any sealant when refitting.

brianconwy · Nov 16, 2018

In the event I loosened the filler plug and oil dribbled out. It was clear so I left it as it was.

discool · Nov 16, 2018

brianconwy said:
In the event I loosened the filler plug and oil dribbled out. It was clear so I left it as it was.

It would do it unless there’s issues with the diff, but just look at the colour of the oil after it’s been drained it will be a lot different to the fresh stuff.

Differential drain plugs and Loctite.

brianconwy

Well-Known Member

The Mad Hat Man

Well-Known Member

brianconwy

Well-Known Member

Rob 90

Active Member

brianconwy

Well-Known Member

The Mad Hat Man

Well-Known Member

brian47

Well-Known Member

lynall

Well-Known Member

brianconwy

Well-Known Member

discool

Well-Known Member

Similar threads