74 series 3 loss of drive to rear left wheel.

VikingRider · Aug 20, 2019

So today I had my landy on stands to paint the wheels all at the same time, before I took them off I decided to run it while it was in the air. We noticed that the rear left wheel starts to turn and then stopped, under gentle throttle in first it rolls with the rest but then stops. The landy has been modified a fair bit over its life I am told by a previous owner I found on Facebook(who did the engine and gearbox swap) that this includes the diffs. Could this just be a broken half shaft?
Any advice would be great am new to all this and learning as I go aswel.

steve2286w · Aug 20, 2019

is that just the peculiarity of how the diff works normally, the real test is driving normally in 2wd and if you move forward it’s ok ,

Colthebrummie · Aug 21, 2019

If the diffs have been changed for different ratios, you should check the accuracy of your speedo before driving past speed cameras.

Col

tottot · Aug 21, 2019

That is just what standard open diffs do [ as fitted to most vehicles ] It is there to allow the wheels to turn at different speeds when going around corners. When up in the air drive goes to the wheel with least resistance. Your left wheel has more resistance [ brake dragging a bit? ] so only the right spins.

VikingRider · Aug 21, 2019

steve2286w said:
is that just the peculiarity of how the diff works normally, the real test is driving normally in 2wd and if you move forward it’s ok ,

It's permanent 4 wheel drive now.

Colthebrummie said:
If the diffs have been changed for different ratios, you should check the accuracy of your speedo before driving past speed cameras.

Col

Have checked the speed using 4 of them signs that light up with your speed as you approach them and seems right.

tottot said:
That is just what standard open diffs do [ as fitted to most vehicles ] It is there to allow the wheels to turn at different speeds when going around corners. When up in the air drive goes to the wheel with least resistance. Your left wheel has more resistance [ brake dragging a bit? ] so only the right spins.

Okey thank you, so if I jacked it up leaving the rear right on the floor it should spin and check the drums, Thabk you

Rodeo Joe · Aug 21, 2019

VikingRider said:
Okey thank you, so if I jacked it up leaving the rear right on the floor it should spin and check the dru

Well no I would have thought it would spin anyway having the least resistance as already stated. Find somebody to help you, Jack both wheels up and with one of you on each wheel spin them and feel for resistance

Rodeo Joe · Aug 21, 2019

Having said that if alls OK you will see the prop turning if you keep the right wheel on the deck

VikingRider · Aug 21, 2019

Rodeo Joe said:
Well no I would have thought it would spin anyway having the least resistance as already stated. Find somebody to help you, Jack both wheels up and with one of you on each wheel spin them and feel for resistance

Rear left wheel Has resistance yeah, will bribe the farther to have a look, thanks everyone.

steve2286w · Aug 21, 2019

VikingRider said:
It's permanent 4 wheel drive now.

Do you still have the yellow and red gear sticks in cab , series gearboxes normally only in 4wd when you pull the red lever back or push the yellow know down
Or have you/had a more radical change in gearbox some pics always helpful

tottot · Aug 21, 2019

+1 on the above. Series should not be driven in 4wd on the road as standard.

VikingRider · Aug 21, 2019

steve2286w said:
Do you still have the yellow and red gear sticks in cab , series gearboxes normally only in 4wd when you pull the red lever back or push the yellow know down
Or have you/had a more radical change in gearbox some pics always helpful

It's got a R380 gearbox and 300TDI so only the small lever, I'll try get some time to grab some pictures, also going to get a friend of mine who knows a lot about them to have a look and see what is actually under there haha

Rodeo Joe · Aug 21, 2019

Thats permanent 4WD then.
Chances are the diffs were swapped for 3.54:1. I would like to see if its a disco box and how well its fitted so pics would be good,

VikingRider · Aug 21, 2019

Rodeo Joe said:
Thats permanent 4WD then.
Chances are the diffs were swapped for 3.54:1. I would like to see if its a disco box and how well its fitted so pics would be good,

I'll try get some pictures soon and post them in here.

74 series 3 loss of drive to rear left wheel.

VikingRider

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tottot

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