Can anyone advise the correct method for checking the auto transmission fluid on a late mk11 340. With a cold engine the fluid level is spot on, With the engine warmed up and running in low no sign of oil on the dipstick, advice appreciated, thanks.

 

I'm guessing your 340 has the BW12 unit. If so, shift pattern will be PRND1D2L.

The car has to be warmed up and at idle as per factory manual below:

If you have the dreaded DG250 box, there are 2 dipsticks to check (also in the factory manual & handbook).

I swapped my DG250 for the later XJ6 BW65 unit which fortunately shows the fluid levels (both hot & cold) on the dipstick.

 

Thank you for the information, this ties in with instructions from the local gearbox engineers, That said I have read elswhere that it should be checked with the car running and in the low position, hence my question, regards Kenny.

 

If you have the dreaded DG250 box, there are 2 dipsticks to check (also in the factory manual

This is not correct, surely. My 1966 3.8 has the DG250 (why "dreaded"?) and has just the single dipstick in the engine compartment. Are you perhaps thinking of the earlier cars which had the dipstick in the cabin under the console (miserable to access)? If the car has the later engine compartment dipstick, that is the only thing that needs to be checked.

 

My 1964 3.4 had the dual dipstick job. Glad to see the end of it. It weighed a ton and must have done wonders for the power-to-weight ratio of the car. Also leaked like the proverbial sieve.

Perhaps I am wrong, but I assumed the later cars had the BW12 or type 35 tranny.

 

Thanks for all the replies ,the car is fitted with BW 35 Box, which is now currently leaking oil out of the frayed kickdown cable after putting two litres of oil in to bring it up to the correct level.

 

Red triangle, I to have fitted a BW65. What mount did you use, was it the BW35.
What did you do with the dip tube as mine did not fit had to cut and weld. I am not happy with the current dip tube. Interested in your comment
Barry

 

Barry,

I believe my rear mount is off an XJ6. I will try an get a photo for you.
It is much simpler than the original mount, but did necessitate drilling fresh holes in the floor pan.

The dipstick was a pain. Had to do some judicious bends to get it in the restricted space in the transmission tunnel. I have not attended to the upper fixing mount as yet.

I also note there is a breather tube for this particular tranny, which I have replicated. It attaches to the dip tube at the top. The breather bung on the end of the breather tube is still obtainable from Barratts (rather exp. at 13 quid for a bit of plastic!).

Lastly, the oil pan still leaks despite numerous gaskets, sealers etc and attempts. Very annoying. The original gasket is useless (squeezes out when tightening the bolts) and I suspect the leakage occurs around the bolts themselves, perhaps thread sealer will do the trick.

 

I fitted a cork type pan gasket, is OK. The pan is thin if I remember correctly, so prone to distortion if over tightened, also bolts have low torque.
By the way mk2's never had the BW12. XJ6 did though!!!!
Barry

 

Did you manage to get a photo.Ive been told that the exterior of an bw65 and 35 are same. manage to source a bw35 rear mount. Tried to compare measurements , difficult, but look similar. No room to work in current garage, so will have to wait until weather changes
Perhaps you could describe your mount, is it a square frame with 2 rubber sandwich blocks, this is what I have used, suspended using original angle iron DG mout. Barry

 

Baz,

Sorry for the delay in replying-

Here's some pics. Box is BW 65 off an XJ6 Series 1, however I checked the XJ6 manual and the mount seems quite different.

So I assume mine is off an earlier 420 model.

Hope this helps.

Pete

 

Thanks Pete,I am very much obliged for pic.The mount that I have sourced looks remarkabley like the one pictured, I was told it was from a BW35 mk2!!!!!
Been talking to a jaguar breaker( car not CB) he says there are 2 types!!!. Suggested I take some measurements and he would advise.He says they have different mounting holes to one another.
How different were the holes you made?
Baz

 

Pete,
Some measurements of the part in my possesion, 4.5" between slot(holes) centres, 8 1/4" from centre of rear hole to centre of spigot. The distance between your slots seems marginally smaller than mine, can only guess with a pic. Mine has cut out at the front, spigot end slope, on RH side.
Baz
PS seen the post on the ZF box?