Freelander 2005 V6 Petrol Viscous Coupler Help Please - Land Rover Forums : Land Rover and Range Rover Forum
 
LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 09-05-2012, 03:27 AM Thread Starter
Member
 
Join Date: Sep 2012
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Freelander 2005 V6 Petrol Viscous Coupler Help Please

Hi,

I recently put my 2005 Freelander V6 in for MOT, it was perfectly fine and I expected it to pass.

Unfortuantely it failed on the front tyres and also the back box of the exhaust was blowing a little bit and needed to be replaced.

The garage replaced the front tyres (with a different make to the back) and the back box of the exhaust (non genuine).

Since then there is a loss of power, a vibration when I drive and a strong smell of gas inside the car. Also the VC is piping hot after a few miles.

The garage have told me that the VC has gone and that it is a coincidence and not related to anything they have done. I don't know a great deal about cars so can someone please tell me if I am being lied to by the garage? I have read that if you are only replacing two of the four tyres in a 4x4 transmission then it should be the rear tyres that you replace...is this true?

I would be really grateful of any helpful comments as I am not sure what to do.

Many thanks
Freelander_V6_2005 is offline  
Sponsored Links
Advertisement
 
post #2 of 2 (permalink) Old 10-24-2012, 04:07 PM
Member
 
Join Date: Jan 2012
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I have always heard to replace all four tires at the same time as to not damage the VC. If the tires have different outer diameters the Viscous Coupling will always be working and it would probably overheat as you mentioned and cause a failure.

Inside this coupling there are discs attached to the center shaft and seals that hold a variable viscosity oil inside the shell of the “outer shaft”. During normal driving conditions when all the wheels are traveling at the same RPM this oil is thin and there is no coupling and the car is driving in a front wheel drive manner. This is because the inner and outer walls (front and rear driveshaft) are moving at the same speed and there is no relative motion in the oil. It is just dragging the rear wheel along. When the front wheels would start to slip that shaft would turn faster than the other; churning the oil and thickening it transferring power from the slipping wheels through the oil to the rear wheels. This action happens instantaneously. The oil thickens to the point where it acts like it is a solid coupling even if it’s only for some microseconds.

If your tires in the front are smaller it would have this effect constantly.

I would buy a matching set for the rear and in a hurry.
MTtank is offline  
Sponsored Links
Advertisement
 
Reply

  Land Rover Forums : Land Rover and Range Rover Forum > Land Rover Model Forums > Freelander / LR2

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Land Rover Forums : Land Rover and Range Rover Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
02 Freelander Petrol Serp Belt bburke Freelander / LR2 0 04-12-2010 11:21 AM
Freelander 1.8GS wagon petrol emroche Freelander / LR2 0 10-14-2009 01:19 AM
4L slippage..possible Viscous Coupler Issue?? FamilyRover Range Rover Classic 8 03-23-2009 07:34 AM
immobiliser freelander 1.8 petrol i think?? robert wade Freelander / LR2 0 04-22-2006 12:25 PM
Freelander IRDs and Viscous Couplings garrycol Freelander / LR2 0 04-29-2005 06:15 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome