Thread: When to use Low range in sand.

Originally Posted by singlecell

I have found in my car using low range I get quick a long whining noise at around 40km/h. Is this normal or is it looking like I have a TC issue?

Does your transfer case have helical or straight cut gears in low range?
Aaron

Ah I meant transfers case when I said tc. Not traction control. My mistake there.
My concern is if this whine is something about to die I don't want to be in a low range needed situation to find out.

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my manual not only allows for driving in low range on bitumen when towing it recommends it and explains how to change from low range to high whilst on the move. if you know what you are doing it works nicely shifting to high at 50kph.
5 speed man

cheers

according to the book and the transfer case description you might ruin the transfer box by shifting at such speeds

Originally Posted by Owner's handbooks - Transfer Gearbox -105

Advanced method (Manual gearbox vehicles)
Changing from high to low on the move:
With the vehicle slowing to a stop and travelling
NO FASTER THAN 5 mph (8 km/h), depress the
clutch and push the transfer lever into neutral.
Just before the road wheels stop turning (and
with the clutch still depressed) push the lever
fully forward into ‘L’ (low).
NOTE: Use positive and confident moves, but
do not rush the gear change.
Changing from low to high on the move:
Changing from ‘L’ (low) to ‘H’ (high) can be
achieved without stopping the vehicle, as
follows:
1. Apply slight backward pressure to the
transfer gear lever in preparation for
changing.
2. Then, in three simultaneous moves,
depress the clutch, release the accelerator
and pull the transfer lever into neutral.
3. Release the clutch pedal for approximately
3 seconds before depressing it again and
moving the transfer lever firmly into the
high position.
4. Finally, select a suitable main gear, release
the clutch and continue driving in the
normal way.
NOTE: After a little practice, this operation can
be carried out smoothly and quickly by using
firm, positive moves.

On automatic models, reduce (or increase) the
speed of the vehicle to 5 mph (8 km/h) and
release the accelerator. Select ‘N’ and move the
transfer lever quickly to the required ‘H’ or ‘L’
position. Finally, reselect ‘D’ with the main gear
selector and continue driving as normal.

EDIT: Sorry ...just realised you said about shifting in HIGH not LOW...apologies

Originally Posted by ozscott

my manual not only allows for driving in low range on bitumen when towing it recommends it and explains how to change from low range to high whilst on the move. if you know what you are doing it works nicely shifting to high at 50kph.
5 speed man

cheers

So when your using low range at 50 do you get any load whining sound?

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Originally Posted by singlecell

Getting into 5th might be a hard gear for me since I drive an auto... I probably should have mentioned that.

You sort of did in your original post. You used the term transmission which generally refers to an automatic transmission as opposed to gearbox which generally refers to a manual gearbox.

Originally Posted by singlecell

So when your using low range at 50 do you get any load whining sound?

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Yes mate gear wine is present - wouldnt worry about it.

Cheers

Originally Posted by sierrafery

according to the book and the transfer case description you might ruin the transfer box by shifting at such speeds

EDIT: Sorry ...just realised you said about shifting in HIGH not LOW...apologies

No problems mate - yes going into low is either stationary or walking pace - I prefer walking pace. If stationary and it wont sift from neutral (low box) to low, let the clutch out and then back in and shift - goes like butter then.

CHEERS