Transmission wind up.?
Submitted: Tuesday, Jun 27, 2006 at 18:09
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Member - Axle
Hi.
A mate of
mine (hear we go!!) has a late model pajero ,and is concerned about towing a 1.5 - 2.0 t on van. Evidentley when you select low range it also engages 4wd, so if in steep country and you have to stop and start again and need low range to do so , is the transmission going to wind up and stop you? this is on the hard stuff, he reckons it winds up if in low range backing up his drive way!!. Can anyone shed some light on this, is this normal with other makes?, or does he have a prob. He was'nt impressed when i told him to buy a Landy, Caus they dont do it.
Thanks Axle.
Reply By: Member - MrBitchi (QLD) - Tuesday, Jun 27, 2006 at 18:59
Tuesday, Jun 27, 2006 at 18:59
How late is late?
Just about every 4wd will engage 4WD when you select low range. Only way you can stop it is to disengage the hubs, if they're manual. If they're auto you're stuck with it, unless you do some modification to bypass 4WD in low range.
If the Paj is a post 2000 model (NM/NP) then 4WD will engage every time you select low range. Having said that, I can't really think of a scenario where this would be a problem. You'd have to be in an offroad situation to make low range a necessity to move off and, that being the case, transmission windup is not a factor as it's not a problem on dirt roads.
The Paj has plenty of power to pull it's rated towing capacity on sealed surfaces without having to resort to low range.
AnswerID:
180671
Reply By: Exploder - Tuesday, Jun 27, 2006 at 19:01
Tuesday, Jun 27, 2006 at 19:01
Can’t see why it wouldn’t be able to get going agene, unless we are talking a ridiculously steep incline.
Just make that toque converter work for its money LOL, it’s a Auto I am guessing.
How is he going to get it out of Low when he gets up to speed?, because he isn’t going to be able to leave it in Low the hole way up a
hill on solid ground as he will damage something IMO
AnswerID:
180673
Follow Up By: Member - Axle - Tuesday, Jun 27, 2006 at 19:12
Tuesday, Jun 27, 2006 at 19:12
Its a manuel 2.8 Turbo intercooled , He seems to be concerned about taking off with a van on a
hill . Dunno might be his driving??.
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Follow Up By: Exploder - Tuesday, Jun 27, 2006 at 19:25
Tuesday, Jun 27, 2006 at 19:25
Has he Given it a try?, Might be the Go, Just load the thing up and find a nice steep
hill with minimal traffic and see if it can take off. Might need to work the clutch a bit to get underway< But a slightly toasted clutch is better than a cooked driveline, I reckon.
FollowupID:
436931
Reply By: GaryInOz (Vic) - Tuesday, Jun 27, 2006 at 20:35
Tuesday, Jun 27, 2006 at 20:35
Wind up will only occur if there is a difference in the speed of the front axle to the rear, usually by turning the steering wheel off centre. Another cause could be due to different sized tyres front/rear, or heavily loaded rear tyres such as when towing, which alters the effective diameter.
Using low range with the front diff disengaged via the hubs runs the risk of overloading the rear diff, the extra torque is designed to be spread across the four wheels.
2Lo is good for precision driving such as lining up on a trailer to couple up, but generally is not recommended for heavy lugging.
AnswerID:
180707
Reply By: Member - Barry C (NT) - Wednesday, Jun 28, 2006 at 00:16
Wednesday, Jun 28, 2006 at 00:16
Axle what year was the Paj. My 3.0L pulls current 1.5 tonne boat up very steep boat ramps no probs.
If I go into low range it AUTOMATICALLY locks the dif lock (front and read axle locked together not each individaul diff), and diff wind up is almost instant.
Other problem I had with 2.8 l turbo diesel in another Pajero is it was gutless down low revs and from standing start. Had 2 tonne boat then and problems you describe, without turbo going the 2.8 has no grunt at all, so not surprised this problem exists.
Maybe rethink tow vehicle, we have just gone to LC79 ute in preparation for desert trips and to eventually pull 2.5 - 3t van off road. Horses for courses
Hope this makes sense Barry.
AnswerID:
180758
Follow Up By: Member - Axle - Wednesday, Jun 28, 2006 at 11:46
Wednesday, Jun 28, 2006 at 11:46
Hi barry, its a 2000 model 2.8 TI exceed.
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