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Can the Disco 3 be driven with rear propshaft removed
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rowlejohn
 


Member Since: 15 Sep 2017
Location: Montmorillon, Vienne (86)
Posts: 204

France 2008 Discovery 3 TDV6 HSE Auto Buckingham BlueDiscovery 3
Can the Disco 3 be driven with rear propshaft removed

As the title...
Can the Disco 3, Automatic be driven/used with the rear propshaft removed ?

Previously owned a Freelander TD4, Manual that could be driven without the rear propshaft including VCU whilst the components were being reconditioned.
  
Post #201192622nd Dec 2018 7:14 pm
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Discomadness
 


Member Since: 19 Jan 2015
Location: Caerphilly
Posts: 2256

Wales 2007 Discovery 3 TDV6 HSE Auto Buckingham BlueDiscovery 3

Easy to answer. No. Thumbs Up
 Jarrod

Current : D3 2007 HSE - AKA the lemon
-beanie grille
-detango with led bulbs
-club body off rebuild. TWICE. 
 
Post #201192822nd Dec 2018 7:17 pm
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rowlejohn
 


Member Since: 15 Sep 2017
Location: Montmorillon, Vienne (86)
Posts: 204

France 2008 Discovery 3 TDV6 HSE Auto Buckingham BlueDiscovery 3

Can you elaborate ?? Confused
  
Post #201193122nd Dec 2018 7:25 pm
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rrhool
 


Member Since: 28 Aug 2014
Location: Norfolk
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United Kingdom 2007 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

The centre diff is not mechanicaly lockable. You'll get no drive to the front.

In reality, driving the Freelander without a prop shaft will have done the Haldex no good at all.
 Richard


D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.



Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone 
 
Post #201193422nd Dec 2018 7:34 pm
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rowlejohn
 


Member Since: 15 Sep 2017
Location: Montmorillon, Vienne (86)
Posts: 204

France 2008 Discovery 3 TDV6 HSE Auto Buckingham BlueDiscovery 3

The Freelander did not have the Haldex fitted-it was a 2002, Freelander 1
  
Post #201193522nd Dec 2018 7:41 pm
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Gareth
Site Moderator 


Member Since: 07 Dec 2004
Location: Bramhall
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You might get some slow intermittent progress in low range rock crawl tr setting, but it won’t be drivable other than shunting around the yard.

The electronics will see movement on all wheel speed sensors that matches the speed of the vehicle, but the rear output from the transfer box will be seeing no torque, and will be thinking the rear wheels are spinning faster. So an error will occur.
  
Post #201198922nd Dec 2018 9:24 pm
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Discomadness
 


Member Since: 19 Jan 2015
Location: Caerphilly
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Wales 2007 Discovery 3 TDV6 HSE Auto Buckingham BlueDiscovery 3

What they all said !

Dad had a freelander 1 and ran it without a prop for a while after the viscous coupling and bearings went on the prop. Eventually wrecked the reduction drive unit ? Transfer box ? Not sure which bit it is. The one bolted to the rear of the gearbox/engine block.
Girl next door has been driving her freelander with a knackered coupling for months and it’s just finally wrecked the same part also.
 Jarrod

Current : D3 2007 HSE - AKA the lemon
-beanie grille
-detango with led bulbs
-club body off rebuild. TWICE. 
 
Post #201200822nd Dec 2018 11:14 pm
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RRSTDV8
 


Member Since: 07 Apr 2014
Location: Here
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United Kingdom 

You could do it, in principle, if you could persuade the motor that drives the centre diff clutch to lock the diff in the manner of rock crawl. How that motor would feel being asked to apply a constant locking action is another matter of course. Might it damage it? Usual locking action cycle is short term.

The real question is why do you want to drive a FWD D3?
 Visiting from rrsport.co.uk
2012 RRS SDV6
2008 RRS TDV8
"When you fire that first shot, no matter how right you feel, you have no idea who's going to die! You don't know who's children are going to scream and burn. How many hearts will be broken. How many lives shattered. How much blood will spill, until everybody does what they were always going to have to do from the very beginning: SIT DOWN AND TALK!" 
 
Post #201203423rd Dec 2018 8:07 am
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L319
 


Member Since: 14 Dec 2013
Location: Herefordshire
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United Kingdom 2005 Discovery 3 TDV6 HSE Auto Buckingham BlueDiscovery 3

Discomadness wrote:
What they all said !

Dad had a freelander 1 and ran it without a prop for a while after the viscous coupling and bearings went on the prop. Eventually wrecked the reduction drive unit ? Transfer box ? Not sure which bit it is. The one bolted to the rear of the gearbox/engine block.
Girl next door has been driving her freelander with a knackered coupling for months and it’s just finally wrecked the same part also.

Agree, Viscous coupling on Freelanders are not designed to lock up permanently, it will overheat and kill it.
  
Post #201204123rd Dec 2018 8:35 am
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rowlejohn
 


Member Since: 15 Sep 2017
Location: Montmorillon, Vienne (86)
Posts: 204

France 2008 Discovery 3 TDV6 HSE Auto Buckingham BlueDiscovery 3

I take on board the explanations regaring the possible effects on the Disco.

The VCU on the F/L is part of the rear propshaft assembly and in itself is a weak point due to the viscous fluid in it, over time setting itself solid. I had to replace that after the car was 2 years old and the propshaft had never been removed beforehand.
Regarding the time I did use the car with the propshaft removed, this was for a period of around a week whilst the propshaft U.J.'s and support bearings, which are a known common weak point, were replaced.
In all the years after this was done, I never had any problems with the IRD or the transmission.
The IRD failure is known to be caused by the Lock Up of the VCU and not removal of the propshaft assembly.
I accept that removal of the drive to the rear wheels gives loss of 4WD and in respect of handling under adverse conditions can be hairy due to the much increased power transmitted to the front wheels.

I heed the advice regarding the Disco when I remove the propshaft to replace the centre support bearing due to the "Advanced" control & monitoring systems on the Disco.
  
Post #201204523rd Dec 2018 9:19 am
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RRSTDV8
 


Member Since: 07 Apr 2014
Location: Here
Posts: 13030

United Kingdom 

The centre support bearing does nothing other than support the rear prop shaft. Taking off the prop and putting the bearing back on will do nothing useful other than keep the bracket bolt holes clean.

Basically, you can't drive the D3 with the rear prop removed unless you can physically lock the centre diff clutch pack. The centre diff locking is by a multiplate clutch that is compressed by a ball ramp actuated by a spiral cam driven by an external electric motor. Unless you compress that clutch pack, you will have no drive at all. This is not a Defender.
 Visiting from rrsport.co.uk
2012 RRS SDV6
2008 RRS TDV8
"When you fire that first shot, no matter how right you feel, you have no idea who's going to die! You don't know who's children are going to scream and burn. How many hearts will be broken. How many lives shattered. How much blood will spill, until everybody does what they were always going to have to do from the very beginning: SIT DOWN AND TALK!" 
 
Post #201219623rd Dec 2018 6:44 pm
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Gareth
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He knows that, his post is talking about the Freelander. 👍
  
Post #201220523rd Dec 2018 7:17 pm
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RRSTDV8
 


Member Since: 07 Apr 2014
Location: Here
Posts: 13030

United Kingdom 

Ah, right. Embarassed I blame too many mince pies... Whistle
 Visiting from rrsport.co.uk
2012 RRS SDV6
2008 RRS TDV8
"When you fire that first shot, no matter how right you feel, you have no idea who's going to die! You don't know who's children are going to scream and burn. How many hearts will be broken. How many lives shattered. How much blood will spill, until everybody does what they were always going to have to do from the very beginning: SIT DOWN AND TALK!" 
 
Post #201232924th Dec 2018 10:26 am
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AndrewS
Tarquin of the Desert 


Member Since: 06 May 2005
Location: Y...... because I can
Posts: 10438

United Kingdom 

A bit off topic but sort of relevant, back in the day I drove a D3 out of the Desert in Morocco with only 3 drive shafts. One of the front outer CV Joints shat itself. The only way to get it to move was in rock crawl and slowly pull away. This worked ok until we got onto a tarmac for some reason the system could not be fooled on tarmac Crying or Very sad There was a tread somewhere explaining how it works.
 In the Beginning there was nothing, which exploded.  
Post #201235924th Dec 2018 1:05 pm
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