Rover auto box (BW35), anyone know 'em?

db · Post by db » Fri Sep 10, 10 10:02 am

The Truk is gettin a bit tired on gearchanges, particularly when cold.
Sometimes pulling away, or changing from 2nd to 3rd it revs (like clutch slip) then changes with a thump.
Fairly sure the fluid level's ok and it's recently been changed ( though it's not the original dipstick so i'm not 100% sure

)
In all this house-moving malarkey i've lost my Haynes so i dunno how to check bands are tight or anything like that.

It has been working hard lately- pulling a lot of weight and gettin the motor a bit hot & bothered.

Dave999 · Post by **Dave999** » Fri Sep 10, 10 11:58 am

to get this you will need to sign up to the site

don't cost nuffin

http://www.hemi6pack.com/knowledgebase/vhmanual/

but this manual will cover 904 727 and Bw35 the trans parts are 22 meg each

Dave

Dave999 · Post by **Dave999** » Fri Sep 10, 10 1:47 pm

You need part 2

torqueflite for 6 cylinder cars

i.e a BW 35 with taxi pack upgrades

Dave

db · Post by db » Fri Sep 10, 10 1:57 pm

Sorry Dave, i didn't mention the Truk has a Rover 3.5 motor too, will that site still cover it?

Dave999 · Post by **Dave999** » Fri Sep 10, 10 2:12 pm

No its a chrysler site

but that link takes you to a VH valiant manual
VH valiants with 6 cylinder engines used a Borgwarner 35 gearbox

hence if you want to adjust the bands on a BW 35 gearbox
the file called part 2 will tell you all you need to konw about service and adjustment

aussie Borgwarner 35 is a toughend box it has the taxi bands and line pressures...

if its not working right you can also shim the pressure springs with 1 pence pices to make it shift faster.

which also wears it out faster

Rover engines ...mmmm no idea

Dave

db · Post by db » Fri Sep 10, 10 2:18 pm

Thanks Dave

Just clicked the link and got it straight away- perhaps cos you're signed up?
Anyway the info seems to relate to mine and my symptoms point more towards the engine needing a tune-up than an actual trans fault.

Dammit and i thought they thrived on neglect & abuse

Cannonball · Post by **Cannonball** » Mon Sep 13, 10 8:14 pm

sounds like the high gear clutch is dying to me, itsnot gripping on the change and when it does it bangs as it takes up the high clearance just check the cable is still connected to it, cut my teeth on the bw range

Anonymous · Post by **Anonymous** » Mon Sep 13, 10 8:49 pm

Cannonball wrote: cut my teeth on the bw range

...... & still suckin on a dummy?

Cannonball · Post by **Cannonball** » Mon Sep 13, 10 9:15 pm

Brutus wrote:
Cannonball wrote: cut my teeth on the bw range
...... & still suckin on a dummy?

yep but its got a nice brown circle round it

DaveBishop · Post by **DaveBishop** » Mon Sep 13, 10 10:34 pm

Me as well cannonball when I did my City and Guilds in automatic transmissions back in the mid 1970s that's all they had at collage to work on I remember taking in a 727 and showing the instructor how to overhaul it.

db · Post by db » Tue Sep 14, 10 5:34 pm

Cheers Dunc.
I've since found it had sprung another leak so the fluid was a bit low.
My throttle cable bracket had bent so wasn't gettin full throttle.
The carbs are flooding due to the needles & seats worn out.
The unhappy pulling away when cold is most likely down to the choke- the cable outer snapped a while ago so i ran the inner out under the hood and stick my arm out the window and yank on it. Cold tickover is a bit erratic...

Once i've worked my way through that lot i'll have a better idea if there's actually anything wrong with the box at all!

charger01 · Post by **charger01** » Tue Sep 14, 10 7:07 pm

Redneck

db · Post by db » Tue Sep 14, 10 9:19 pm

Yeehaw!

db · Post by db » Wed Sep 15, 10 10:21 pm

Fluid was down about a pint and a half, not had chance to road test properly but another odd symptom is that when it refuses to shift 2-3, if i drop the throttle it will shift

Post by **TyreFryer** » Thu Sep 16, 10 10:17 am

I have a BW35 out of a Jag that I was going to fit to the Rover 3.5 in my Landrover if you need a replacement.