Forum-Gallery-Shop-Sponsors

« Advertise on Freel2.com

Home > Technical > PTU problem?
Post Reply  Down to end
Page 1 of 1
Print this entire topic · 
Dave1972



Member Since: 01 Sep 2013
Location: somerset
Posts: 3

United Kingdom 2007 Freelander 2 TD4 HSE Manual Stornoway Grey
PTU problem?

Hello all,
My freelander has no drive going to the rear prop,when its on a ramp only the front wheels turn.The prop coming out of the ptu(transfer box) does nothing at all,has anyone else had this problem?
Thanks Dave

Post #197372 1st Sep 2013 8:41 pm
View user's profile Send private message View poster's gallery Reply with quote
alex_pescaru



Member Since: 12 Mar 2009
Location: RO
Posts: 4640

If you have all wheels on the air, car in gear, engine running and only the front wheels are turning and the front to rear driveshaft is not turning, then there is a problem in the PTU. Probably the drive gear, which is hollow in order to pass through the right driveshaft, is snapped somewhere or its splined connection with the differential is "shaved".
BUT
If you have the engine off and you rotate by hand one front wheel and the other is turning in opposite direction and the front to rear driveshaft is not turning, then it's normal... Elementary mechanics, my dear Watson... Laughing

Post #197378 1st Sep 2013 8:50 pm
View user's profile Send private message View poster's gallery Reply with quote
Dave1972



Member Since: 01 Sep 2013
Location: somerset
Posts: 3

United Kingdom 2007 Freelander 2 TD4 HSE Manual Stornoway Grey

Thank you Alex for the quick reply,when the car is in gear with engine running the prop does not turn.Will this require just a ptu or could there be gearbox problems as well.
Thanks Dave

Post #197386 1st Sep 2013 9:00 pm
View user's profile Send private message View poster's gallery Reply with quote
alex_pescaru



Member Since: 12 Mar 2009
Location: RO
Posts: 4640

No, normally, just the PTU... But if the problem is at the differential connection, it could be the transmission too...
For more reference here is the documentation:
https://www.freel2.com/gallery/albums/user...20Case.pdf

Post #197413 1st Sep 2013 9:53 pm
View user's profile Send private message View poster's gallery Reply with quote
Dave1972



Member Since: 01 Sep 2013
Location: somerset
Posts: 3

United Kingdom 2007 Freelander 2 TD4 HSE Manual Stornoway Grey

Thanks for your help

Post #197416 1st Sep 2013 10:03 pm
View user's profile Send private message View poster's gallery Reply with quote
oldgeezer



Member Since: 09 Apr 2011
Location: Wiltshire
Posts: 1302

United Kingdom 2013 Freelander 2 TD4 GS Manual Baltic Blue

Alex, dunks freel2 has devoured 2 NSF drive shafts in quick succession, just wondered if there could be a problem with the front transfer assembly and all the torque is running through one drive shaft ? Which I would of thought would of been noticed by torque steer ? Just a thought. Jaguar x-type sport gone
Jaguar x-type 2.2d sport one of my best cars ever sadly gone
Freelander 2 GS auto 2008 most unreliable ever ! gladly gone
Freelander 2 GS manual 2013 only time will tell !

Post #197558 2nd Sep 2013 7:11 pm
View user's profile Send private message View poster's gallery Reply with quote
alex_pescaru



Member Since: 12 Mar 2009
Location: RO
Posts: 4640

The NS driveshaft (left one) is exiting directly from the front differential and not through the PTU as right one.
And when a driveshaft has a problem and "loose" torque as you suggest, then ALL the torque goes to that driveshaft... It's the nature/construction of a differential... Or maybe I didn't understand the issue ?...

Post #197582 2nd Sep 2013 8:03 pm
View user's profile Send private message View poster's gallery Reply with quote
oldgeezer



Member Since: 09 Apr 2011
Location: Wiltshire
Posts: 1302

United Kingdom 2013 Freelander 2 TD4 GS Manual Baltic Blue

Hi Alex
Thats fine thank you, thats how I understood it as well, if there is a fault may be all the torque is going too the NSF drive shaft which could explain the rapid wear !
Many thanks Thumbs Up Jaguar x-type sport gone
Jaguar x-type 2.2d sport one of my best cars ever sadly gone
Freelander 2 GS auto 2008 most unreliable ever ! gladly gone
Freelander 2 GS manual 2013 only time will tell !

Post #197584 2nd Sep 2013 8:15 pm
View user's profile Send private message View poster's gallery Reply with quote
alex_pescaru



Member Since: 12 Mar 2009
Location: RO
Posts: 4640

A driveshaft is either working (even if it has play) or not. There is no between... Very Happy
And if one driveshaft is damaged (i.e. snapped) the car won't drive.
In my opinion, the rapid wear of the driveshaft must be looked elsewhere, not at the differential or PTU.
Probably the driveshaft and/or labor quality...

Post #197596 2nd Sep 2013 8:57 pm
View user's profile Send private message View poster's gallery Reply with quote
oldgeezer



Member Since: 09 Apr 2011
Location: Wiltshire
Posts: 1302

United Kingdom 2013 Freelander 2 TD4 GS Manual Baltic Blue

Thanks Alex, yeah I did understand. The drive shaft was a genuine landrover replacement and it wore out in 20000 miles ! So its a possibility that the drive from the diff is delivering more power through t he NSF shaft if there was a fault in the PtU

Rewind a bit, by the sounds of itDunk had knocked the front near side so may be the lower arm is out of alignment causing u due stress on the shaft. The tracking may be correct but the lower arm could still be bent and the shaft running out of true.. Jaguar x-type sport gone
Jaguar x-type 2.2d sport one of my best cars ever sadly gone
Freelander 2 GS auto 2008 most unreliable ever ! gladly gone
Freelander 2 GS manual 2013 only time will tell !

Post #197600 2nd Sep 2013 9:22 pm
View user's profile Send private message View poster's gallery Reply with quote
alex_pescaru



Member Since: 12 Mar 2009
Location: RO
Posts: 4640

Indeed, a little less, but not so excessive...

The PTU is connected with the input of the differential if I can say this way. It has nothing to do with the differential and its driveshafts...
Oh... I believe I see what you want to say... If the right driveshaft which passes through the middle of the PTU is somehow impeded, then the power will divert to the other driveshaft, the left one, which could work overtime and wear quicly... This is what you wanted to say? But in that case the PTU will suffer more and will be damaged before the two left driveshafts...

Post #197603 2nd Sep 2013 9:28 pm
View user's profile Send private message View poster's gallery Reply with quote
oldgeezer



Member Since: 09 Apr 2011
Location: Wiltshire
Posts: 1302

United Kingdom 2013 Freelander 2 TD4 GS Manual Baltic Blue

Dunk
If it were mine I would drive into a wet grassy field or very loose gravel and see how the power distributes to all the wheels under acceleration.

Alex, the drive shaft wore in 20,000 miles causing a vibration due to the joints wearing out which happened to the previous one as well. That's what struck me as odd until I looked at the power distribution and how the diff and PtU worked.
So the drive shaft did not completely fail causing loss of drive .
I do understand that if the shaft had failed or splines stripped then yes there would of been loss of drive. Jaguar x-type sport gone
Jaguar x-type 2.2d sport one of my best cars ever sadly gone
Freelander 2 GS auto 2008 most unreliable ever ! gladly gone
Freelander 2 GS manual 2013 only time will tell !

Post #197604 2nd Sep 2013 9:32 pm
View user's profile Send private message View poster's gallery Reply with quote
alex_pescaru



Member Since: 12 Mar 2009
Location: RO
Posts: 4640

I know, I know, my last post was like I was writing as I think... Very Happy

Post #197607 2nd Sep 2013 9:39 pm
View user's profile Send private message View poster's gallery Reply with quote
michal969



Member Since: 01 Sep 2012
Location: Semily
Posts: 185

Czech Republic 

Hello guys,

just a few thoughts about this interesting post.

If there would be more power applied to left driveshaft there also should be a massive torque steer making the car almost undriveable.This would also mean that the right driveshaft is blocked somehow but in this case the RF wheel would hardly move.....hard to believe the driver wouldn't notice this.

I think the problem could be as both of you said in poor quality driveshaft or damaged/bent suspension components....or engine/chassis alignment.
It is also possible there was some collision damage to the diff/transmission causing lately PTU failure......hard to tell without having the PTU on my worktable Crying or Very sad

Post #197754 3rd Sep 2013 9:52 pm
View user's profile Send private message View poster's gallery Post Reply
Post Reply  Back to top
Page 1 of 1
All times are GMT + 1 Hour

Jump to  
Previous Topic | Next Topic >
Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



Site Copyright © 2006-2024 Futuranet Ltd & Martin Lewis
Freel2.com RSS Feed - All Forums


Switch to Mobile site