no filling plug on lt77 box ?

[uglymug]

Why haven't I got a filling plug on the side of my lt77 box ? Big drain plug at the bottom but just a blank casting. Not on the other side either. So how do I fill it then ? How much to put in as some say 2litres but Difflock say 3litres ?

Edited by uglymug on Monday 13th June 20:51

[adam quantrill]

It must be empty then!


If you look on the drivers side just over half way up you'll see a plug with a 1/2" square drive. It's a few inches forward of the drain, too.

[Smokey Boyer]

Sorry if I am telling something you know, you are looking for a 1/2" square stud on the drivers side of the box, and will need a good 1/2" spanner or a Stilson wrench to remove it.

The box takes just short of 2L of oil. The additional litre quoted on some sites is for the extension case that is not on the TVRs.

[uglymug]

hi , nope nothing ! only the drain plug, swear. when i get home will take some photos ....

[ElvisWedgely]

If I'm not mistaken the TVR S 2.9 doesn't have a filler plug either because I used to own one and I remember having this problem. I'm not sure what box is fitted to those but I was told the oil in there was for the life of the box.

Well, there is only one thing for it. Turn the car upside down and fill from the drain plug

Tony. TCB.

[uglymug]

hi , box is on the bench anyway, so will tip on its side to fill. By the way it is joined to a 390se NGK engine.....

[adam quantrill]

Stick in 2.25l to be on the safe side. let's see the photos then!

[The Hatter]

If it has no fill plug I wonder if it's not an LT77? R380?

[adam quantrill]

Wot - like this one....?

[stevoj]

Maybe I'm missing something here but it has a drain plug! what for if you can't fill it back up?

I too would need to see it to believe it.

[uglymug]

hi, hopefully pics came out OK....its a 28A suffix D....










there seems to be a breather plug in the top part. Have ordered 2l of Difflock so will fill thru drain plug....................

Edited by uglymug on Wednesday 15th June 09:49

[TVRleigh_BBWR]

can you not fill from here.

[uglymug]

hi , yes seen that but thought not to touch as could have spring/pins for mechanism underneath as have always in the past filled up by square headed bolt on the blank side. Just had a look and can fill thru this hole when gearbox is in the car. Anyway thanks to all for your ideas...........ta like

[mrzigazaga]

Looks newish

[adam quantrill]

Looks painty ;^)

Blimey - there's a flat bit where the filler should be! Never seen one like that before.

If you take off that little plate on the top with the two bolts I'm pretty sure any oil put in there will end up in the right place.

You could check by draining it, then put some oil in that hole, and see if it dribbles out the drain.

[gmw9666]

Hi mark
I've got exactly the same problem......which hole did you used to fill in the end?