This week I’m driving an Iveco Cargo 4wd, I’ve yet to get stuck, but would like to know what the three switches do.
I guess they’re for diff lock ect, but which is what?
i284.photobucket.com/albums/ll37 … itches.jpg
I’d guess that 1 is 4wd, 1 is diff lock and 1 is low range.
But, that is only a guess, that looks like a right 
I don’t think any are low range.
The gears in this thing are so short it runs out of revs before 50mph, so I wondered if one if the switches was a range switch. I tried switching all three and driving in a straight line, it made no difference to the ratio. It’s like have the first 6 gears of an 8 speed box!
I can’t assume it is all working correctly. 
dancompression:
I don’t think any are low range.
The gears in this thing are so short it runs out of revs before 50mph, so I wondered if one if the switches was a range switch. I tried switching all three and driving in a straight line, it made no difference to the ratio. It’s like have the first 6 gears of an 8 speed box!
I can’t assume it is all working correctly.
Don’t forget, if 1 does change the range, you’ll have to go to neutral then into a gear for it to have worked.
Maybe there’s an overdrive?
I’ll be honest though, I’m guessing just off what I know of normal 4x4’s, I’ve absolutely no idea on that
Front difflock, centre difflock, rear difflock.
If you get stuck, engage the rear difflock and centre difflock and try that. That’ll get you 3 wheel drive.
If you’re still stuck, try the front diff lock as well. That’ll get you full 4 wheel drive. Be aware, with the front difflock engaged, you’ll only go straight ahead, you can’t steer due to the elimination of the Ackermann steering effect (google it if you can be arsed). Only use the difflocks for as short a distance as possible, and not at speed. Be sure to check they’re disengaged before hitting the highway. If they don’t disengage straight away once on solid ground, try reversing for a short distance. That usually winds them the other way and they disengage.
If you find yourself in a hole with all 4 wheels spinning, stop, and get help. What doesn’t work (despite most drivers trying it) is sitting still spinning the wheels, that just digs holes and gets you deeper in, making you even more stuck.
If, after trying with all 3 diffs locked, you’re still stuck, then give me a ring. I’ll come with a proper 4x4 and winch you out 
what work does the truck do ■■ im guessing electricity co ., auger on a hiab for’ telegraph ’ poles kinda thing 
mind you its a few years since telegraphs were sent 
cheers mike
Thanks for the reply cieranc, but I didn’t check back here until after I needed it…
I got a bit of wheel spin on a steep, dry dirt track, so I engaged all three, and went slowly… aware that the steering may be compromised. So I got up the windy track ok.
I did end up with a problem when I stopped on the way back down, applied the handbrake, then when I let my foot off the foot brake the thing slid!! Must be only rear axle on the parking brake then.
Mikey D:
what work does the truck do ■■ im guessing electricity co ., auger on a hiab for’ telegraph ’ poles kinda thing
mind you its a few years since telegraphs were sent
You’re right, it’s electricity.
Yep, E100’s only have single acting chambers on the front, no spring brake on them.
But in theory, with the diff locks engaged, if the back wheels can’t turn, neither can the fronts 
There should be an amber light/s that illuminates on the dash if they engage successfully.
Steering axles don’t usually have parking brakes. I’ve always assumed it’s so you’ve still got steering if the air goes and they lock on but could just be because the chambers are much, much bulkier.
Not common on fleet motors, but there’s a fair few units about that have double acting chambers on the fronts.