Navara low gear ratio

Submitted: Wednesday, Jan 17, 2007 at 03:06
ThreadID: 41294 Views:4669 Replies:9 FollowUps:6
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I tow an 8 mtr., 3000Kg. 5th. wheeler with my Navara.

My question is:-

Is it acceptable to use low gear ratio, front hubs unlocked, to manoeuvre around the campsite, i.e. am I putting any of the transmission under strain. I ask this question obviously not knowing the technicalities of 4WD transmission. It would then allow me to "crawl" into position without too much clutch slipping.
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Reply By: Tony - Wednesday, Jan 17, 2007 at 07:51

Wednesday, Jan 17, 2007 at 07:51
For the time it takes to get into position and the amount of manoeuvering, no harm will be done to the transmission. It takes the strain off the clutch as well.
AnswerID: 215822

Reply By: Willem - Wednesday, Jan 17, 2007 at 08:11

Wednesday, Jan 17, 2007 at 08:11
Yes no worries with most 4WD's to use Low Range in 2wd.

I have used this method for years for various applicantions. It is particularly good when reversing into caravan park bays

Cheers
AnswerID: 215826

Reply By: Member - MUZBRY (VIC) - Wednesday, Jan 17, 2007 at 09:30

Wednesday, Jan 17, 2007 at 09:30
Gday
Same answer as willem ..I have been doing it for years...
Muzbry
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AnswerID: 215840

Reply By: Mel - Wednesday, Jan 17, 2007 at 09:36

Wednesday, Jan 17, 2007 at 09:36
Thanks fellas - puts my mind at rest.

Mel
AnswerID: 215843

Reply By: Member - Matt Mu (Perth-WA) - Wednesday, Jan 17, 2007 at 09:59

Wednesday, Jan 17, 2007 at 09:59
As the others have said....I have done this for years pulling boats out on boat ramps and whenever I reverse the camper. Saves the clutch, stops wheel spin(on boat ramp) and allows better control.

The official answer though is no...you shouldnt and its not about the trans but the axles.

The same result as putting lockers etc in and risk breaking an axle.. The design was for the vehicle to have the low ratio and load shared between all 4 wheels. So to do what we all do...use low in 2wd does put the driveshafts at risk.

But hey I have never damaged anything yet and will continue to drive in 2wd low because I believe the benefits out weigh the risks.

Enjoy, Matt.
AnswerID: 215846

Follow Up By: Member - Barry M (NSW) - Wednesday, Jan 17, 2007 at 17:24

Wednesday, Jan 17, 2007 at 17:24
Matt, I cant quite follow the logic that operating in low range without the hubs engaged has a detrimental effect on axles. Sure, they turn along with the front diff
but I cant see how that can harm components, a little added wear maybe.
i have put about 500k on hiluxes used as sprayrigs & 90% of that was in low range
2wd, no ill effects yet. But I am always ready to to learn....oldbaz.
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FollowupID: 476231

Follow Up By: Member - Oldplodder (QLD) - Wednesday, Jan 17, 2007 at 18:33

Wednesday, Jan 17, 2007 at 18:33
Low range is about 2:1, so you are multiplying the torque out of the transfer box by 2. Crop the clutch in 2wd low range and you risk doing an axle or diff with twice the torque.
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FollowupID: 476260

Follow Up By: Ianw - Wednesday, Jan 17, 2007 at 23:25

Wednesday, Jan 17, 2007 at 23:25
I agree, Specially when you are towing a load that is absolutely max for the vehicle
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FollowupID: 476352

Follow Up By: Member - Matt Mu (Perth-WA) - Thursday, Jan 18, 2007 at 09:58

Thursday, Jan 18, 2007 at 09:58
I think you have been answered oldbaz but I will elaborate...

In 2H if the torque outweighed the vehicle it would stall. You would simply get to a point that you couldnt push it along any longer so would have to drop to low range.

Now in low range you are in 4wd so the torque to the driving axles is now shared among 4 axles. If you are in 4L but with the hubs disengaged you can get to a situation (pushing 3000kg of boat/trailer) that may exceed the load capacity of the REAR axles.

Now in reality when you are in this situation you are not pulling a 3 ton trailer but moving a camper into a camp spot of pulling a boat out of a boat ramp. So you are not risking anything really but the time you are......bang!

We never stop learning mate or the day we do is the day we stop breathing.

Matt.
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FollowupID: 476412

Follow Up By: Member - Barry M (NSW) - Thursday, Jan 18, 2007 at 10:32

Thursday, Jan 18, 2007 at 10:32
Ok, chaps. I accede to your greater knowledge, but will continue to operate my
sprayrig in low range ,hubs disengaged, as to drive the front wheels increases
fuel use by 25% & increases turning circle to an unacceptable degree. My load
starts at 1.5 ton decreasing to .5 ton. Sometimes conditions require 4wd, when
soft or steep, of course. If I have proved anything I suppose it is that hilux is indeed unbreakable, under my operating conditions anyway, in 500,000 k I have
never had a diff, axle or driveline problem, not even a wheel bearing. One tough
little truck. 2.8 D no turbo, leaf front end. First was only 2.4d, current as stated,
ks about the same each. around 250k ea....oldbaz.
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FollowupID: 476421

Reply By: Mel - Wednesday, Jan 17, 2007 at 10:15

Wednesday, Jan 17, 2007 at 10:15
Thanks Matt for another view - as I said this would only be for manoeuvring in the camp site.

Mel
AnswerID: 215847

Reply By: Member - Toytruck (SA) - Wednesday, Jan 17, 2007 at 10:53

Wednesday, Jan 17, 2007 at 10:53
I did it for years in my 40 shorty while I mustered and walked the cattle...never had a prob.

toytruck
AnswerID: 215855

Reply By: Patrol22 - Wednesday, Jan 17, 2007 at 12:17

Wednesday, Jan 17, 2007 at 12:17
Yep ditto - I actually fitted manual locking hubs to my GU Patrol just so I could have low range 2WD for use in these situation and particularly on hard surfaces (eg bitumen, concrete)
AnswerID: 215866

Reply By: Member - extfilm (NSW) - Thursday, Jan 18, 2007 at 01:31

Thursday, Jan 18, 2007 at 01:31
As far as I am aware and thinking back to my mechanic days, I really don't think u will have a problem with using your Navara in low...... What u might have a problem with is getting your van to the destinination..... Please before u bite my head off for bagging the Nissan....... My Navara which was purchased new in june is a piece of sh$t. I am dreading the thought of towing something with it up hill. It struggles enough with only 1 passenger..... Took me 14 trys to get up big red and had to let the tyres down to 10psi before it got up. I did it in a hilux 18 mths previous and got up first go. Probably serves me right for not road testing the thing before hand. If it keeps letting me down in the next 6 mths there will be a very cheap piece of poo up for sale.
AnswerID: 216070

Follow Up By: vcbb - Thursday, Jan 18, 2007 at 10:01

Thursday, Jan 18, 2007 at 10:01
I have the D22 Navara and found in low revs on the beach it wasnt too flash. Added the ARB Dtronics chip and it has lots of torque and now behaves like a diesel should. 20% more torque and 25% more power
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FollowupID: 476413

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