Diff Wind Up
Submitted: Monday, Aug 11, 2003 at 19:38
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Walrus
We recently purchased our first 4x4 and have been told that it should be run 20km per month in 4wd (owners manual) Not being able to get in the dirt as often as we would like what is the answer to over come this problem without causing diff wind up.
Reply By: Member - Roger - Monday, Aug 11, 2003 at 20:58
Monday, Aug 11, 2003 at 20:58
HI Walrus,
By the sound of your enquiry you have a Part Time 4wd. That is one where the hubs need to be locked to engage 4wd, if so lock these hubs but do not engage the 4wd lever and the front wheels will turn the front diff and the internals in the transfer case thus stiring the oil up and lubricating the drive train. This does not harm the vehicle except as said before you will now use slightly more fuel, so yes its a good practice to run the front axle once a month for 20klm or more.
However I am sure that once you experience real 4wd driving this will be a mute point as you will be hooked just like the rest of us.
If your vehicle is a constant 4wd then there is not this prob as the front axle is always working.
RegardsDodg
AnswerID:
27498
Follow Up By: Tuco69 - Monday, Aug 11, 2003 at 21:17
Monday, Aug 11, 2003 at 21:17
"If your vehicle is a constant 4wd then there is not this prob as the front axle is always working."
How could it be a constant 4wd, when the manual states that it should be put into 4wd once a month for 20K???
Surely if it is a constant 4wd - then there is no way of taking it out of 4wd!
FollowupID:
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Follow Up By: jeepy - Monday, Aug 11, 2003 at 21:48
Monday, Aug 11, 2003 at 21:48
Tuco69
What if he is drivng a pajero, a cherokee or an iO.
These 4WD's have a choice of 2WD, 4WD full time, 4WD part time and 4WD Low
FollowupID:
18933
Follow Up By: Allyn (Pilbara) - Tuesday, Aug 12, 2003 at 09:32
Tuesday, Aug 12, 2003 at 09:32
Roger
I thought the idea of doing the 20 km's was to rotate the crown wheel which in my line of thinking means just engaging 4WD for a few rotations of the front wheels to get the crown wheel lubricated (20 KM's not necessary but hey - it's not far) .
I'm no expert and will gladly stand corrected if this is not so (please advise). Locking the hubs will certainly lubricate other areas though.
Just when I thought I understood !Next Trek - Callawa Rd
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Follow Up By: Member - Roger - Tuesday, Aug 12, 2003 at 17:20
Tuesday, Aug 12, 2003 at 17:20
Hi All,
First, sometimes people change the hubs on auto free wheel hubs to manual therefore as said lock them up and give them a run. On Part time 4wd when you lock the hubs up, this then turns both front axles and diff plus the gear in the transfer case thus ensuring all conponents get an oil bath. This also saturates the oil seals helping to ensure that they remain sealed not drying out, there have been cases where the seals suffer damage from the pounding they cop when the shafts are in one position only. There is a name for this but it eludes me at the moment. I have had various 4wd vehicles over the last decade or so and have always given them a run with the hubs locked just to ensure the aforementioned and never had trouble, however they were all part time 4wd vehicles. In fact every time I travel on a gravel road I usually engage 4wd to give every thing a run. After all you pay for it all so why not use it.
RegardsDodg
FollowupID:
19007