How to check if 4wd is working?
Discussion
Crossing a field in our new to us 54 plate shogun it started to strugle, clicked into 4wd and no joy, eventually got out using lots of forwards and backwards in 4wd-d.
Tyres pirelli scorpions with good tread (not the best i know!)
Our old pajero never used to struggle like that, even when towing.
So either I hit a bad bit of ground, these tyres suck or something not quite right with the car.
I know I could go back stick it in 4wd and boot it while someone watches, but is there another method?
Tyres pirelli scorpions with good tread (not the best i know!)
Our old pajero never used to struggle like that, even when towing.
So either I hit a bad bit of ground, these tyres suck or something not quite right with the car.
I know I could go back stick it in 4wd and boot it while someone watches, but is there another method?
Shoguns are 4x2 iirc ie not permanent 4wd. Does it have the auto hubs that engage once drive is delivered to the front axle?
Easiest way of checking 4wd operation is to jack up the front of the car with 4wd engaged, rotate a wheel and the other should turn in the opposite direction, you will see the front prop shaft rotate too. All if memory serves me correctly :S
Easiest way of checking 4wd operation is to jack up the front of the car with 4wd engaged, rotate a wheel and the other should turn in the opposite direction, you will see the front prop shaft rotate too. All if memory serves me correctly :S
It is manually switchable with a second gear stick - 2wd (rear) 4wd, 4wddl, lr4wddl - I knows the rear are spinnings, but couldnt see the fronts from the window!
It did 'feel' like it was in 4wd but really struggled which got me wondering if all was ok.
Will just go back with someone else.
It did 'feel' like it was in 4wd but really struggled which got me wondering if all was ok.
Will just go back with someone else.
When in 4low you should know instantly if its working, how it moves off is totally different to 2wd even in low range. As you say it "feels" like its in.
Did you set off in 4wd or get into trouble then put it into 4wd?
Once in the field you would only really need to move between 4l/4h if at all. Crawling in 4l 2nd gear should be enough even on road tyres.
Not sure what age your shogun is but here's proof you don't need gnarly tyres: http://www.youtube.com/watch?v=O_1z31Fu68M but....... they do help!
Did you set off in 4wd or get into trouble then put it into 4wd?
Once in the field you would only really need to move between 4l/4h if at all. Crawling in 4l 2nd gear should be enough even on road tyres.
Not sure what age your shogun is but here's proof you don't need gnarly tyres: http://www.youtube.com/watch?v=O_1z31Fu68M but....... they do help!
Yep the lights were all lit - first thing i checked.
It def has the 'chug' factor in low ratio so I know thats working.
When I got stuck I was in rear wheel drive, switched to 4wd and bogged down more, reversed out, bogged down, switched to 4wddl and got out forwards.
Thinking now maybe it was not quite engaged first time around, or I had just dug in too much.
Will go back to the fields this weekend with the wife and get her muddy....!
It def has the 'chug' factor in low ratio so I know thats working.
When I got stuck I was in rear wheel drive, switched to 4wd and bogged down more, reversed out, bogged down, switched to 4wddl and got out forwards.
Thinking now maybe it was not quite engaged first time around, or I had just dug in too much.
Will go back to the fields this weekend with the wife and get her muddy....!
When you engage four wheel drive without locking the centre diff you will not have true four wheel drive as power will be transmitted to the axle with the least resistance (wheels spinning). Which is why once you had locked the diff (4wddl) you were able to drive out of the boggy ground as you now had power going to the axle with traction.
To obtain true four wheel drive with power going to all four wheels permanently then you need to be able to lock the front and rear diffs as well as the centre. There are very few production 4x4 vehicles that have the ability to do this.
To obtain true four wheel drive with power going to all four wheels permanently then you need to be able to lock the front and rear diffs as well as the centre. There are very few production 4x4 vehicles that have the ability to do this.
bigblock said:
When you engage four wheel drive without locking the centre diff you will not have true four wheel drive as power will be transmitted to the axle with the least resistance (wheels spinning). Which is why once you had locked the diff (4wddl) you were able to drive out of the boggy ground as you now had power going to the axle with traction.
To obtain true four wheel drive with power going to all four wheels permanently then you need to be able to lock the front and rear diffs as well as the centre. There are very few production 4x4 vehicles that have the ability to do this.
This.To obtain true four wheel drive with power going to all four wheels permanently then you need to be able to lock the front and rear diffs as well as the centre. There are very few production 4x4 vehicles that have the ability to do this.
Spoken as one who similarly wondered by his '4x4' (toyota landcruier) got stuck. Without a centre diff-lock you have a one-wheel drive car and with a centre diff-lock a 2-wheel drive car. You need a centre diff-lock and a locking rear diff to have 4x4 and hardly any cars have this.
Ayahuasca said:
This.
Spoken as one who similarly wondered by his '4x4' (toyota landcruier) got stuck. Without a centre diff-lock you have a one-wheel drive car and with a centre diff-lock a 2-wheel drive car. You need a centre diff-lock and a locking rear diff to have 4x4 and hardly any cars have this.
The Shogun in question has a centre diff lock. My 51 plate has a locking rear diff too, which a 54 plate might have or might have traction control instead. Current Shoguns have rear diff lock again.Spoken as one who similarly wondered by his '4x4' (toyota landcruier) got stuck. Without a centre diff-lock you have a one-wheel drive car and with a centre diff-lock a 2-wheel drive car. You need a centre diff-lock and a locking rear diff to have 4x4 and hardly any cars have this.
agent006 said:
The Shogun in question has a centre diff lock. My 51 plate has a locking rear diff too, which a 54 plate might have or might have traction control instead. Current Shoguns have rear diff lock again.
There is a big difference between Shoguns and Pajeros though, as I've found out recently trying to find a replacement for the diff-end yoke for my rear propshaft.Pajeros of the same era as my Shogun (1999) all seem to have LSD rear diffs. My Shogun has a full diff lock on the rear, which has different bolt spacing to the LSD diffs for the yoke. Given that various scrappies went through hundreds of shafts without finding a match, I would assume that locking diffs are very much a rarity.
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