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 How to use the selectable 4WD

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Andonic
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Number of posts : 27
Home City : London
Model and year : Cruising Cabin 1991 pop top selectable 4WD 2.8 Diesel
Registration date : 2018-01-25

PostSubject: How to use the selectable 4WD   Thu Feb 15, 2018 11:26 pm

Hi all just bought a lovely 1991 Cruising Cabin Diesel 2.8 with selectable 4WD. I understand that I need to turn something on the front hubs to engage 4WD - but there is also a button on the dashboard and a second gearstick in front of the main automatic gear selector. What do I do with all these? Help!
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WGWarburton
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Number of posts : 191
Home City : Central Scotland
Model and year : 94 2.8 Noppo HiTop Super-Long
Registration date : 2012-02-07

PostSubject: Re: How to use the selectable 4WD   Fri Feb 16, 2018 7:54 am

Hi, and welcome!
      Have a look through this thread:

http://hiace-super-custom.forumotion.com/t2346-2-8-diesel-engine-power-problems

....and the links in the later posts.  Good info there!

Your location says you are in London... are you not caught out by the LEZ? I got badly stung by them when I passed through a few years ago!

Cheers,
             W.
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Hiace4wd
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Number of posts : 662
Home City : Netherlands
Model and year : 1994 Toyota Hiace 4x4 DIY camper
Registration date : 2016-02-01

PostSubject: Re: How to use the selectable 4WD   Fri Feb 16, 2018 9:58 am

Basically, normal use cases:

- Normal driving on normal roads: No 4wd enabled, and front hubs set to free (saves fuel and wear because front axle is not turning)

- When driving normal roads in real winter times or light offroading, set the front hubs to locked. This doesn't help you yet, but allows you to choose 4wd with the button on the dash when needed

- When on snow or icy road, enable the 4wd button

- When offroading, choose to use it or not. I tend to use it only when I notice the van is struggling.
A lot of dirt roads (especially when dry) do not require much 4wd

When offroad, the going gets though and there are some steep inclines, you will want to enable 4wd of course. You have to be in 4wd mode to be able to use the low-gearing for the steep inclines or declines.

If you use 4wd on dry tarmac, you will put extra wear on the system, as there is lots of tension. This way you can break the transfer case. You will also notice this in heavy steering.
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Andonic
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Number of posts : 27
Home City : London
Model and year : Cruising Cabin 1991 pop top selectable 4WD 2.8 Diesel
Registration date : 2018-01-25

PostSubject: Re: How to use the selectable 4WD   Sun Feb 18, 2018 10:57 pm

Thanks for the quick replies. Very Happy. I get the bit about when to use 4 WD and I know about turning the hubs. Interesting that this doesn't engage 4WD until I press the 4WD button.

I'll have to follow the links carefully to see what the second gearstick does - after all, on the main shifter there is already the possibility of selecting low range.

As for the London Emission Zone I put my registration number into the LEZ vehicle check here: https://tfl.gov.uk/modes/driving/lez-lez-vehicle-checker-35896
And it comes back with this lovely message:

No charge due for this vehicle
This vehicle either meets the required emission standards, is exempt from the scheme or is subject to a 100% discount.
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Andonic
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Number of posts : 27
Home City : London
Model and year : Cruising Cabin 1991 pop top selectable 4WD 2.8 Diesel
Registration date : 2018-01-25

PostSubject: Re: How to use the selectable 4WD   Sun Feb 18, 2018 11:00 pm

THere is a new Ultra Low Emission Zone coming in next year - and this woudl mean paying about £12 extra a day when in the zone. Fortunately I live a little outside the South Circular and don't intend driving into the centre of town. I'm lucky enough to have an over 60's Oyster card - free public transport in London.
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WGWarburton
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Number of posts : 191
Home City : Central Scotland
Model and year : 94 2.8 Noppo HiTop Super-Long
Registration date : 2012-02-07

PostSubject: Re: How to use the selectable 4WD   Sun Feb 18, 2018 11:42 pm

Andonic wrote:
Thanks for the quick replies.   Very Happy.  I get the bit about when to use 4 WD and I know about turning the hubs.  Interesting that this doesn't engage 4WD until I press the 4WD button.

I'll have to follow the links carefully to see what the second gearstick does - after all, on the main shifter there is already the possibility of selecting low range.
...
The L on the main shifter just prevents the auto box changing up from 1st. If descending a long hill, for example, you can use it (or 2 for 1st & 2nd) to stay in low gear for better engine braking to save overheating the brakes. Alternatively, you can use it to control your speed when it's slippy (Snow? Ice? Mud?) without using the brakes. This avoids the wheels locking, enabling you to maintain control.
Once you have 4wd engaged, however,  you can move the smaller lever and have a reduction gear ("low range"); which gives more torque at the wheels (e.g. to pull a heavy trailer up a steep slope) and allows you to crawl slowly over uneven or slippy ground.
It's a proper 4x4 setup with a transfer case and no centre differential... not an AWD or pseudo 4WD system that uses a viscous coupling or fancy electronics to try and minimise wheelspin...

Cheers,
             W.
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Andonic
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Number of posts : 27
Home City : London
Model and year : Cruising Cabin 1991 pop top selectable 4WD 2.8 Diesel
Registration date : 2018-01-25

PostSubject: Re: How to use the selectable 4WD   Thu Feb 22, 2018 2:06 pm

Thanks for the helpful answer.  I think I have got it now.  This bit of advice also useful:
You can only move the hi/lo lever when the 4x4 button is illuminated and the autobox in N.  I presume that means don't touch it while driving along.  

I understand from the owner's manual that using the main lever you can shift down while you are moving (within certain speed parameters).
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toldsimply
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Number of posts : 151
Home City : Maidenhead, UK
Model and year : 1993 Toyota Hiace Super GL 2.8 Litre with selectable 4WD
Registration date : 2012-05-09

PostSubject: Re: How to use the selectable 4WD   Fri Feb 23, 2018 12:47 pm

Hi Andonic, welcome to Hiace ownership.
I've had my wagon for almost 6 years and love it. I can't get in the low emission zone though. What engine is your one? I;m running the 2.8 diesel with selectable 4wd.

Cheers,

Rich
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toldsimply
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Number of posts : 151
Home City : Maidenhead, UK
Model and year : 1993 Toyota Hiace Super GL 2.8 Litre with selectable 4WD
Registration date : 2012-05-09

PostSubject: Re: How to use the selectable 4WD   Fri Feb 23, 2018 12:49 pm

Also meant to say thanks for finding out how to use the hi lo lever. I've never got round to asking how to use that part. Haven't needed it. My first use of the 4wd was driving off a festival site in Wales where every other vehicle was towed out. Loved it!
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gillypoof
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Number of posts : 11
Home City : brighton
Model and year : toyota hiace camper 2.8 4wd diesel auto
1994
Registration date : 2010-09-04

PostSubject: Re: How to use the selectable 4WD   Sat Feb 24, 2018 7:55 pm

The LEZ tax goes on the year the vehicle was registered,not year of manufacture.Its a bit of a glitch in the matrix.My 1994 super gl pays nothing because it was registered in the uk after 2006. Lovely aint it ?Going to take a while for them to close this loophole.
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Hiace4wd
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Number of posts : 662
Home City : Netherlands
Model and year : 1994 Toyota Hiace 4x4 DIY camper
Registration date : 2016-02-01

PostSubject: Re: How to use the selectable 4WD   Sun Feb 25, 2018 8:59 pm

Haha that is a silly loophole. And it wouldn't work here in Netherlands or Germany (with our zones)
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toldsimply
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Number of posts : 151
Home City : Maidenhead, UK
Model and year : 1993 Toyota Hiace Super GL 2.8 Litre with selectable 4WD
Registration date : 2012-05-09

PostSubject: Re: How to use the selectable 4WD   Tue Feb 27, 2018 8:26 am

That is such a great loop hole. If only mine had been imported that little bit later Surprised/
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WGWarburton
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Number of posts : 191
Home City : Central Scotland
Model and year : 94 2.8 Noppo HiTop Super-Long
Registration date : 2012-02-07

PostSubject: Re: How to use the selectable 4WD   Tue Feb 27, 2018 1:20 pm

Hi again,
I have this sticker on my sun visor :

[url=https://servimg.com/view/18530206/1][/url

Google translate offers this:

Please leave it idling in the P range until it goes out.
For details, please read the handling manual

- - - -

How to use the transfer H2_H4 Sweep operation
H2 (High range rear wheel drive): Please use for normal driving
H4 ( High range four-wheel drive): Use when traveling on icy and snowy roads, sandy lands, bad roads etc
H4_L4 Lever operation L4 (Low range four-wheel drive): Please use it especially when you need a large driving force.
CAUTION
1 Shift operation to H4, L4 equipped with a LE Wheel Hub should be done after both left and right freewheel HUFs are set to the "LOCK" position.
Please do not shift operation with only one side switched

2  H4, "L4 Shift operation must be confirmed after turning on the 4WD operation indicator"

3.H4.L4 Shift operation should be stopped in the "N" or "P" range.

4. Even if H4 - H2 shift operation is carried out, if the 4WD operation indicator light is not off L, check the surrounding safety and accelerate or decelerate or retreat
5. Drive on the paved road surely Please use wheel drive
6. Please replace the tire, please install the same manufacturer, size, en tire for all 4. Also please check air pressure ERL "Please see the handling manual , PMET
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Hiace4wd
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Number of posts : 662
Home City : Netherlands
Model and year : 1994 Toyota Hiace 4x4 DIY camper
Registration date : 2016-02-01

PostSubject: Re: How to use the selectable 4WD   Tue Feb 27, 2018 1:41 pm

Yes, if it sticks in 4wd even though you turned it off, reversing is usually the easiest way to get it to let go.
And indeed always use the same tire size on all wheels.
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