All Wheel Drive Encyclopedia

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Super Select II all wheel drive

Mitsubishi's Super Select II all wheel drive system featuring:

2H mode - Rear wheel drive. Vacuum-disconnected front axle (the front driveshaft is disconnected from the transfer case; a free wheel mechanism disconnects the right wheel, left left and right front driveshafts are freewheeling).

4H mode - Permanent all wheel drive, 33%/67% torque distribution front/rear in normal conditions, up to 100% to either axle if slippage occurs (via center differential with viscous coupling). Switching from 2H to 4H is allowed at speeds up to 100 kph (65 mph). From 4H to 2H at any speed.

4HLc mode - Permanent all wheel drive, fixed 50/50 torque distribution (via locked center differential) in normal conditions. Shifting from 4H to 4HLc is allowed at speeds up to 100 kph (65 mph). From 4HLc to 4H at any speed.

4LLc mode - Permanent all wheel drive, fixed 50/50 torque distribution (via locked center differential) with 1.9:1 low gear (Pinin - 1,548:1). Full stop required to switch to 4LLc and back.

Figure: Mitsubishi Pajero II (1991-1999) all wheel drive mode indication:

Figure: Mitsubishi Pajero II (1991-1999) Super Select transfer case

pajero super select

Figure: Mitsubishi Super Select modes and transfer case operation

Figure: Mitsubishi Super Select all wheel drive system scheme

Figure: Mitsubishi Super Select transfer case modes

Last updated: 08-Apr-2010 17:42


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There are 3 comments
Jack
December 08, 2009 - 10:23
Subject: Nissan (Pathfinder) All-mode 4WD

Is this system similar to Nissan's all-mode 4WD? As in, can you leave it on say 4WD and drive on dry pavements without the car breaking?

Reply to Jack
awd.ee
December 08, 2009 - 18:21
Subject: Re: Nissan (Pathfinder) All-mode 4WD

It is not exactly the same mechanically (Mitsubishi has full-time 4wd, Nissan has automatic 4wd), but the usage of the 4wd modes is similar.

You can use the Auto mode to drive on dry pavement. Nissan's 4H and 4LO modes lock the driveshafts together and thus cannot be used on dry pavement.

Reply to Jack
WessexMario
January 13, 2010 - 23:12
Subject: Re: Nissan (Pathfinder) All-mode 4WD

2H and 4H can be used on tarmac.
4H is good in rain, ice or snow conditions.

4HLc and 4LLc lock the centre transfer box differential and should not be used on tarmac. If you did use this on tarmac then when you turn, you may get transmission wind-up. This is due to the front and back wheels each cornering at a different radius, without tyre slip this puts mechanical pressure on the differentials, gears and bearings.
WM

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