Isuzu Trooper Owners Club UK™

penyrhelddu · * Joined: 08 Nov 2007 Posts: 34 Location: AMMANFORD

Just bought 3.1 auto. No owners manual etc....

Fitted General Grabber AT2 265/75/16 tyres today as we got ever so slightly stuck in a ditch with road tyres in 2WD Shocked

- 4WD got us out without problem Very Happy

.

Might just be new toy effect but I'm sure they ride on the road heaps better than 235/70/16 - back to try that ditch later!

Anyway - is it possible/advisable to change 2H-4H-4L whilst moving forwards to make full use of momentum? I remember doing this with previous Range Rover.

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markymoan · Posted: Thu Nov 22, 2007 17:18 Post subject:

Hi and welcome Very Happy

Has it got Auto locking hubs on the front or just blank plates ?
Also what year is it ?
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penyrhelddu · * Joined: 08 Nov 2007 Posts: 34 Location: AMMANFORD

its a 1992 mk2 with Auto hubs...

markymoan · Posted: Thu Nov 22, 2007 17:55 Post subject:

penyrhelddu · * Joined: 08 Nov 2007 Posts: 34 Location: AMMANFORD

ok - thanks for your help..

rangielover · **** Joined: 17 Jul 2006 Posts: 276 Location: West wales

no dont do that mate, you need to stop between shifting between low hi and 2wd.

im in ammanford too and have a hub here damaged from doing as you suggested, would happily show you the damage!

Jon

penyrhelddu · * Joined: 08 Nov 2007 Posts: 34 Location: AMMANFORD

Hi Jon

The kids are dying to go off road - maybe you know of some good spots?

Mark

dxmedia · Posted: Fri Nov 23, 2007 9:32 Post subject:

now.... I was under the impression that if you went into 4wd, locked the hubs off (auto), went back into 2wd, and as long as there was no reversing (such as going out laning over different surfaces) then there was no problems from going 2 - 4 - 2 - 4.

Not recommended since you have to keep an eye on popping into reverse and unlocking the hubs, but since the hubs are already locked there's no problems doing it.

huhuhu cus I've been doing it for years Very Happy

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Chris B · Posted: Fri Nov 23, 2007 13:00 Post subject:

Hard1 · Posted: Fri Nov 23, 2007 14:33 Post subject:

But if you had MANUAL hubs previously locked into lock position you could "shift-on-the-fly" into 4WD high (at a sensible i.e. 30 mph speed) yes or no?

Can't remember.... Confused

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rangielover · **** Joined: 17 Jul 2006 Posts: 276 Location: West wales

no you cant shift at all on the move. Having locking hubs allows you to run 2wd low thats the only benefit

Hard1 · Posted: Fri Nov 23, 2007 17:23 Post subject:

It's not the only benefit, but an important one on (dry) rocks without destroying your (auto) hubs. Also in deep snow (please please) having to reverse continuously tends to knacker auto-hubs in short order so that's another. Thanks for the info on shifting on the move - probably saved me finding out the hard way.... Shocked

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1999 Cougar with a NICE motor..

Click HERE to see under my bonnet!

penyrhelddu · * Joined: 08 Nov 2007 Posts: 34 Location: AMMANFORD

Im getting confused now..

Rocks, snow, reversing?

When is it OK to switch to 4WD?

I know you should only do it off road... Should I only use 4H once traction is lost in 2WD - then 4H/4L if that doesnt work?

My thought when you see a possible *obstacle* ie snow/mud/incline stop and select 4H/4L but what if 2WD would have done or the traction is too much for 4WD.....???

More confused...

Newtroopy · ** Joined: 16 Apr 2007 Posts: 92 Location: Wiltshire

Hi there,
Now I am under the impression that you can engage the 4WD on the move, drive on a suitable surface, then dis engage 4WD after you have crossed the slippery surface.

Then to un lock those auto hubs, while in 2WD reverse the vehicle for a while.

You should NEVER chainge the HIGH 2 LOW while moving.

If I am incorrect in any way please let me know.
Nice manual hubs allow you to trick the "system" and run in 2WD low, if in the un locked position.
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Isuzu Trooper 3.0D SWB Citation 2000 (W)
all recall work done

Peej · Posted: Sat Nov 24, 2007 2:02 Post subject:

The earlier models I believe, the vehicle had to be stopped to shift to 4x4 whether in high or low range. The later models had a system called shift on the fly, which allowed shifting to 4x4 high only, on the move up to 60 mph, these models had fixed hubs. The same rules apply to whatever system, as in only to engage 4x4 on loose or muddy surfaces,engaging on hard grippy surfaces could result in damage. The point that was made about those with manual hubs is that you could be in 4x4 low, but by not engaging the hubs, you would not actually be in 4x4, useful when reversing or needing the slower speeds on a hard surface.
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