4WD system in Jackaroo - how does it work?

Submitted: Saturday, Sep 25, 2004 at 23:02

ThreadID: 16561 Views:9626 Replies:6 FollowUps:2

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Mike

How does the 4WD system in a Jackaroo work? (I have a 2001 3.5L Petrol SE with no special traction control mechanism.)

I used to own a 1995 Pajero and knew how that worked with the various options on the transfer lever, but my 'new' Jackaroo has only 2H, 4H and 4L. I assume, therefore, that it does not have a centre dif lock (unlike the Paj and many other 4WDs), so how does it work? Is there some sort of viscous coupling that keeps both differentials turning, or am I stuffed when one wheel loses traction?

(I'm not interested in people rubbishing the Jackaroo or sparking a discussions on the merits of different makes and models - purely interested in understanding how the Jackaroo's 4WD system operates.)

Thanks in advance for any input given.

Cheers,
Mike.

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Reply By: TheUndertaker - Sunday, Sep 26, 2004 at 00:48

Sunday, Sep 26, 2004 at 00:48

D = drive

AnswerID: 77842

Follow Up By: Bob H - Sunday, Sep 26, 2004 at 01:13

Sunday, Sep 26, 2004 at 01:13

undertaker
if you dont care than why post a reply?????
maybe one day you may need to ask a question and someone else will say they dont really care. how about giving good advice to people in need or better still just shut up and not waste everyones time.

Bob

FollowupID: 337425

Reply By: Utemad - Sunday, Sep 26, 2004 at 01:05

Sunday, Sep 26, 2004 at 01:05

Sounds like it is the Part-Time 4wd model.

2H = rear drive only high range

4H = front and rear drive locked together high range

4L = front and rear drive locked together low range

Unlike your old Pajero you can't use 4wd high on high traction surfaces as you do not have a centre differential anymore.

AnswerID: 77845

Reply By: Bob H - Sunday, Sep 26, 2004 at 01:07

Sunday, Sep 26, 2004 at 01:07

Mike,

2H = 2wheel drive.

4H = 4 wheel drive high range

4l = 4 wheel drive low range

if you have locking front hubs, you must lock them in before engaging 4H or 4L.

if front hubs are not freewheeling, than just move the selector to what you need eg 4h or 4l. dont forget that you should not drive on bitumen in 4h or 4l as this will cause breakage of front diff and/or gearbox etc. hope this helps.

Regards

Bob

AnswerID: 77846

Follow Up By: TheUndertaker - Sunday, Sep 26, 2004 at 01:22

Sunday, Sep 26, 2004 at 01:22

get real / get a life / learn how to laugh and most importantly learn to answer without being pedantic,,,

FollowupID: 337426

Reply By: Savvas - Sunday, Sep 26, 2004 at 08:41

Sunday, Sep 26, 2004 at 08:41

Hi Mike,

The Jackaroo SE is a part time 4WD. There is no centre diff, just a transfer case that locks front and rear driveshafts when engaged.

You only engage 4H or 4L when driving on a surface where there is adequate slip, so as not to induce "wind up" in the drive train. You can't engage 4WD on a hard surface.

The front axle on the 2000 and later SEs have a drive flange permanently connecting the wheels to the front driveline. The LH side of the front axle has a electric/vacuum operated solenoid which engages and disengages drive to the left wheel when 4WD is engaged and disengaged. The RH wheel is permanently engaged to the drivetrain.

On that model SE, the system is called "Shift-On-The-Fly". You can select 4H at upto 96km/h by simply pressing the button on the dash. To select 4L, you need to be stopped and in neutral and move the lever to 4L.

AnswerID: 77857

Reply By: jackablue - Sunday, Sep 26, 2004 at 09:22

Sunday, Sep 26, 2004 at 09:22

Mike I think Savvas has answered your question. The only thing I would say is that the Jackaroo has pretty good rear wheel articulation which helps keep you on the ground. I don't know how many pictures I have seen of the 95 paj 3 wheeling. Some 4wd traing companies used to have them on there brochures doing this.

Cheers

Jackablue

AnswerID: 77859