front diff wont stay engaged

[vit24]

Ive got a 2000 grand vitara, ive been get a 4wd light on and then turns of like a second after, if i move while turning i notice that it is not engaged, after checking a few topics on this forum i checked if the front diff could intenal actuator could keep pressure, it kept pressure very well, put my guage on the compressor behind the front bumper and it had pressure when activated but as soon as it stopped pumping it lost all its pressure, im just wondering what could be the problem with the compressor and can i dissassemble it and fix it (if possible) then reassemble it and reinstal with no problem, in short just wondering if compressor is servissable.
thx, jason

[Max]

The loss of pressure could be from the pump, hoses / connections or the bellows inside the diff.

See this thread for complete troubleshooting and repair info.

http://www.suzuki-forums.com/1g-1999...ude-early.html

[fordem]

The pump behind the front bumper should automatically cycle on & off to maintain the required pressure, although, depending on the magnitude of the leak, it may be unable to do so effectively as it's a very small pump.

Suzuki never intended the pump to be serviced, but it can be disassembled (I have a thread which shows how to do this - it's probably linked in the threard thatMax pointed you to), but start by disconnecting the pump outlet and plugging it, and then selecting 4H with the ignition on - the pump should come on, run for around 1~2 seconds and then shut off and the 4WD light should be lit - if it's not doing this, there is a problem with the pump or it's controller.

Describe what yours does under these circumstances and i will help you figure out the direction to go.

[vit24]

ive pluged my gauge directly to my pump outlet, had about 6 psi until pump turn of and as soon as it turned of the pressure went back to zero, today i took it apart and found rust in it, so i buffed the rust off and installed a new oring because the other one had rust all over it and it was easier to change the oring then cleaning it, started to reassemble it with vasoline on the oring for a better seal, whille reassembling it one wire broke of the ship, i trued welding i back to the ship but it wouldn't take, so i went at my local dealership and found out that it sells for 400$ and im not gonna spend that money for that, so im curently looking for a used or sheaper pump, if i cant find one im gonna do the tyrap and look outs, but i dont belive that the tyrap will last cause tyrap dry out and im shure in oil its worst, just to let you guys know that i am a mecanic and im open to better sujestions, thx
Jason

[vit24]

ive just seen that i forgot to say that i put 6 psi in the actuator in the front diff and it held very well, i left the gauge on it for about an 1h while turning the front wheel once and while, also noticed that my shaft that goes to my differential was turning, so i know that the diff actuator or line going to are not the problem and the pump is the one that is not functioning well, thx
jason

[Max]

You need to find a good used pump.

Plug in your location under "USER CP" and also look at the classified section of this forum for a used pump.

Or try...
http://car-part.com/

Or...
http://www.hawksuzukiparts.com/

[vit24]

Found one this morning for 50$, got to remove it from the vehicul its on tonight and install on mine, i will be testing before removal

[vit24]

Just wanted to let you guys know that ive installed my new pump and my front diff works good now, i have ridden for about 100km with it locked in 4wd drive with no problem, ive even went offroading in the snow and had no problems, thanks for the help

jason

[Max]

Good!

Just don't 4WD on payment or ANY hard surface. It's not designed to work that way and you can ruin drive-line components.

[vit24]

no i try to use it as little as possible , i only use it when i need it and when on ice or snowy roads, ive noticed the binding that it does and that one reason i dont leave it on for no reason, plus its better on gas when in 2wd

jason