Thread: Borg T/Case help

Originally Posted by justinc

Hi Mike, The checking procedure is actually quite easy, just put the transmission in neutral, apply the park brake firmly, jack up a front wheel and try to rotate it using the wheel brace on one of the nuts. It should turn ever so slowly with some effort.

If you find that it won't turn, and when releasing the wheel brace the wheel springs back, then the VC is siezed.

JC

Thanks for that Justin

Previously I changed the front output shaft bearing

When I did up the nut on the flange (to the front output shaft) ... I had to use a strong arm on the socket to do it up (had to get it up to a tourqe of 180nm?)


That viscos should have "Slowly moved" then??

Mike

As JC has pointed out it should give with persuasion. I have found if not seized can turn very slowly bt lifting a wheel and turn by the tyre but does take some effort if you try to go quick.

Also as JC mentioned.... when mine was seized the wheel did spring back when jacked up.
But I still run the viscous They do have good points
Tony

Originally Posted by mike 90 RR

Thanks for that Justin

Previously I changed the front output shaft bearing

When I did up the nut on the flange (to the front output shaft) ... I had to use a strong arm on the socket to do it up (had to get it up to a tourqe of 180nm?)


That viscos should have "Slowly moved" then??

Mike

Yes it should've, but if the trans was in Park, or if a manual in gear with the park brake on, then only turns a little way until it stops against the park pawl etc.

JC

Originally Posted by justinc

Yes it should've, but if the trans was in Park, or if a manual in gear with the park brake on, then only turns a little way until it stops against the park pawl etc.

JC

OK .... Just came back from the shed and these are the findings

With the car in neutral ... Handbrake on (Automatic trans)

The front Propshaft is off
Working from the Drivers side of car (laying down on the ground)
Testing on the front output flange of the T/C

Using the wheel brace and the power of one arm


1: If I turn it "Anti clockwise" ... I can turn it around (did 3/4 of a turn)
However!!!
2: If I then turn it "Clockwise" ... It moves a bit .. then it locks up


A; Is this normal?
B; In Which direction does the driveline turn to turn the diff // move the car forward?

Mike

Originally Posted by mike 90 RR

OK .... Just came back from the shed and these are the findings

The front Propshaft is off
Working from the Drivers side of car (laying down on the ground)
Testing on the front output flange of the T/C

Using the wheel brace and the power of one arm


1: If I turn it "Anti clockwise" ... I can turn it around (did 3/4 of a turn)
However!!!
2: If I then turn it "Clockwise" ... It moves a bit .. then it locks up


A; Is this normal?
B; In Which direction does the driveline turn to turn the diff // move the car forward?

Mike

No, it isn't normal
If the trans is in neutral, then you should be able to rotate it indefinately around and around in either direction with some considerable effort against the force in the VC. Put it this way, if it were an LT230 WITHOUT the CDL engaged, you should be able to rotate the front output flange, with 1 hand, in any direction for as long as you want, easily.

Sorry Mike, something sounds amiss.

JC

Originally Posted by justinc

No, it isn't normal
If the trans is in neutral, then you should be able to rotate it indefinately around and around in either direction with some considerable effort against the force in the VC. Put it this way, if it were an LT230 WITHOUT the CDL engaged, you should be able to rotate the front output flange, with 1 hand, in any direction for as long as you want, easily.

Sorry Mike, something sounds amiss.

JC

The bit on ... should turn in either direction ... Is what the viscos will not do

It's actually not the cost of the parts that are my main focus anymore ... Just the light at the end of the tunnel

I am actually happy to have that bit pointed out to me as I think everyone has been testing it in the ONE direction only

Another likely product to be returned

Originally Posted by mike 90 RR

The bit on ... should turn in either direction ... Is what the viscos will not do

It's actually not the cost of the parts that are my main focus anymore ... Just the light at the end of the tunnel

I am actually happy to have that bit pointed out to me as I think everyone has been testing it in the ONE direction only

Another likely product to be returned

Mike,

I can't remember having actually tried one in both directions, but there is no reason why it wouldn't rotate either way, after all, if it didn't you would lock the drivetrain in reverse when cornering, or going forwards when cornering. The VC is just there to provide a hindrance to the centre differential output torque enabling a sort of locking action for increased traction. It dosen't contain any kind of sprag clutch etc so I can't see that it is working properly by only revolving in one direction. One more test you can do to eliminate the transmission altogether; slip the TC into neutral and then repeat the test.

JC

Originally Posted by justinc

Mike,

I can't remember having actually tried one in both directions, but there is no reason why it wouldn't rotate either way, after all, if it didn't you would lock the drivetrain in reverse when cornering, or going forwards when cornering. The VC is just there to provide a hindrance to the centre differential output torque enabling a sort of locking action for increased traction. It dosen't contain any kind of sprag clutch etc so I can't see that it is working properly by only revolving in one direction. One more test you can do to eliminate the transmission altogether; slip the TC into neutral and then repeat the test.

JC

I had the same thought ... Always best to be sure .... I still only did the test with the Auto in neutral ... the T/C was left in High range gear


OK ... Test repeated

Results are .... OK in both directions
I did one full turn in both directions // ALL Good now



Must be a full moon or someone's hidden a gremlin in my car
I gotta admit that when you are doing it yourself ... there's alot to do

Change clothes to greasers
Jump in car / handbrake on / put in neutral /
Jump out of car / lay under car / Test the Viscos
Get up / jump in car / take handbrake off / put in park

Go back to house / have a coffee
Have second thoughts / Should test in reverse
Go back to shed

Repeat first line of test ....


Mmmmm ... I think someone forgot to put the trans in neutral the second time round??? as it is the only "Logical" explanation as to why it now decides to turn



Thanks Justin

Now off to get that front propshaft looked at


Mike