1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Welcome To LandyZone!

    LandyZone is the biggest Land Rover forum on the net. We have plenty of very knowledgable members so if you have any questions about your Land Rover or just want to connect with other Landy owners, you're in the right place.

    Registering is free and easy just click here, we hope to see you on the forums soon!

transferbox test

Discussion in 'Range Rover' started by redrrover, Mar 1, 2014.

< Previous Thread | Next Thread >
  1. redrrover

    redrrover Member

    Joined:
    Jan 27, 2008
    Posts:
    37
    Likes Received:
    0
    Hi i have a 1996 dse i have jacked up one front wheel with autobox in N and handbrake on the wheel spins free with one finger If this is not right would it stop my auto box locking in 4th gear .I have no faults showing Thanks Pete
     
  2. jamesmartin

    jamesmartin Well-Known Member

    Joined:
    Dec 8, 2010
    Posts:
    81,205
    Likes Received:
    11,486
    Location:
    louth lincs
    it would show you have a failure in front axle drive line or a very loose vc
     
  3. gfromleeds

    gfromleeds Well-Known Member

    Joined:
    Mar 29, 2010
    Posts:
    2,234
    Likes Received:
    1
    Location:
    leeds. westyorkshire, uk
    Dont think it should spin with only one wheel off ground! Definitely something not right maybe diff?
    How do you mean would it stop it going into 4th?
    Is it over reving?
     
  4. wammers

    wammers STILL BREATHING. Donater

    Joined:
    Oct 19, 2008
    Posts:
    55,384
    Likes Received:
    9,691
    Location:
    Preston Lancs.
    If it spins that freely snapped half shaft i would think. I suppose you did look to see if you have a front prop shaft? No faults will show and no it will not effect torque lockup or 4th gear.
     
    Last edited: Mar 1, 2014
  5. redrrover

    redrrover Member

    Joined:
    Jan 27, 2008
    Posts:
    37
    Likes Received:
    0
    Hi the axle is ok the propshaft is turning into front of transferbox
     
  6. wammers

    wammers STILL BREATHING. Donater

    Joined:
    Oct 19, 2008
    Posts:
    55,384
    Likes Received:
    9,691
    Location:
    Preston Lancs.
    VCU is totally knackered then. Or a shaft has snapped.
     
    Last edited: Mar 1, 2014
  7. jamesmartin

    jamesmartin Well-Known Member

    Joined:
    Dec 8, 2010
    Posts:
    81,205
    Likes Received:
    11,486
    Location:
    louth lincs
    ive never yet seen a complete loose vc ,though ive heard it happens ,if it was rrc id think output splines were stripped but p38 dont
     
  8. wammers

    wammers STILL BREATHING. Donater

    Joined:
    Oct 19, 2008
    Posts:
    55,384
    Likes Received:
    9,691
    Location:
    Preston Lancs.
    He will have to have a look James, unusual for sure.
     
  9. redrrover

    redrrover Member

    Joined:
    Jan 27, 2008
    Posts:
    37
    Likes Received:
    0
    Hi the autobox changes up and down all gears but dose not lock TC it just picks the rev up this is how i found transfer box spins free on propshaft looks like it has to come out thanks Pete
     
  10. jamesmartin

    jamesmartin Well-Known Member

    Joined:
    Dec 8, 2010
    Posts:
    81,205
    Likes Received:
    11,486
    Location:
    louth lincs
    not until you find out why wheel spins
     
  11. redrrover

    redrrover Member

    Joined:
    Jan 27, 2008
    Posts:
    37
    Likes Received:
    0
    Hi i have looked at transferbox drive and i think the vcu is very loose as on a wet field it spins front wheels .I had jacked up one front wheel with auto box in (N) and hand break on and it spins free without any force.so i think it would be like clutch slip because the TC dose not lock in 4th it just pick the reves up .all gear changes work ok but dose over rev I have had this p38dse for 7 years.thanks Pete
     
  12. wammers

    wammers STILL BREATHING. Donater

    Joined:
    Oct 19, 2008
    Posts:
    55,384
    Likes Received:
    9,691
    Location:
    Preston Lancs.
    Don't think you are listening are you? The torque converter has nothing to do with the VCU. With a front wheel off the floor you should NOT be able to turn the wheel, prop and VCU excepting with great difficulty.
     
    Last edited: Mar 3, 2014
  13. redrrover

    redrrover Member

    Joined:
    Jan 27, 2008
    Posts:
    37
    Likes Received:
    0
    so i have 2 problems one on mainbox and one on transferbox would i be right in if i removed front prop would car not drive if the vcu was very loose would this have same efect witch could give higher revs on engine cheers
     
  14. odyssey

    odyssey Active Member

    Joined:
    Jun 22, 2010
    Posts:
    359
    Likes Received:
    13
    Location:
    Derbyshire
    Have you tried jacking the other front wheel? If the wheel you raise turns the prop, then that half shaft and the diff are OK, and you have a prob in the VCU/transfer box. BUT if you raise the other front wheel and it turns freely WITHOUT turning the prop, the halfshaft (& poss diff) on that side are shot.

    But you still have a transfer box/VCU problem as the front prop shouldn't turn easily with only one wheel raised.

    Does it spin rear wheels also on wet grass?
     
  15. redrrover

    redrrover Member

    Joined:
    Jan 27, 2008
    Posts:
    37
    Likes Received:
    0
    yes it spins rear wheels the prop turn into the transferbox halve shafts both good I can only think vcu very loose and not driving front wheels untill higher revs is this posible cheers
     
  16. Druim

    Druim Well-Known Member

    Joined:
    Dec 5, 2011
    Posts:
    1,734
    Likes Received:
    4
    Location:
    Denmark
    Wonder if that could happen to be fluid have escaped VCU:confused:
     
  17. Datatek

    Datatek Well-Known Member

    Joined:
    Feb 5, 2009
    Posts:
    33,089
    Likes Received:
    1,868
    Location:
    Near Poitiers SW France
    What do you mean it spins the rear wheels? If you are turning the front wheel with a rear wheel also off the ground, it will turn fairly freely unless the handbrake is on.
    If you drop the front prop and the VCU is fecked, the car should not move.
     
  18. wammers

    wammers STILL BREATHING. Donater

    Joined:
    Oct 19, 2008
    Posts:
    55,384
    Likes Received:
    9,691
    Location:
    Preston Lancs.
    If a drive shaft was broken at either side it would not turn the prop. :);)
     
  19. redrrover

    redrrover Member

    Joined:
    Jan 27, 2008
    Posts:
    37
    Likes Received:
    0
    Hi i have done the test with one front wheel jacked up and wheel spins free. i have run round a field and back and front wheels spin on grass.i have looked at drive shafts all ok diffs ok vcu must be very loose and needs extra revs to turn front prop this gives higher revs to change gear as i have vcu slip would this sound right cheers
     
  20. Datatek

    Datatek Well-Known Member

    Joined:
    Feb 5, 2009
    Posts:
    33,089
    Likes Received:
    1,868
    Location:
    Near Poitiers SW France
    The VCU does not drive the front prop, the centre diff does that. the VCU is simply an automatic diff lock for the centre diff.
    With the handbrake on and the gearbox in P you should not be able to turn the front wheel even if the VCU is knackered.
     
< Previous Thread | Next Thread >