Unsure what i've done

[niallinireland]

Hey all
I've hit a bit of a problem. Trying to change my upper wishbone bushes. Easiest way is to remove the wishbone assy and change them on a bench. Only problem is that the bolts holding the upper wishbone assembly in placed is unmoveable.
This is where i hit the problem, had to resort to a torch to try and heat the bolt and then try and loosen them but, althought try to protect everything else around the bolts from excessive heat, a plastic bracket got licked by the flames and caught fire, this was a very small fire(wouldn't even really call it a fire just a flame really) but still managed to melt a hose the bracket was holding. The hose is for a airline which runs up to a bank of air filters sitting behind the fuse and relay box, infront of the driving position(drive on the LHS in ireland). The melted hose is one of four similar, what are these for??, Couldn't trace where the hose as it got to dark. Anything i should know about them apart from the obvious??

Just like to point out that, didn't go with a torch to this easily, literally last resort, even try remove the bushing in sit tu before trying.Spent the entire day trying everything else first. Had an extenguisher close to hand also. Definitely not for the faint hearted


Niall

[geeves]

If these are the pipes Im thinking of they control the diesel pump under boost etc.
Those bolts get torqued to 112 foot pound and if theres any rust etc youd need a big breaker bar to shift them

[niallinireland]

Right, its daylight again!!!
Check the hoses i burnt last night, they're a pair of hoses going to a device on the exhaust, guesting some sort of regulator for the diesel pump as suggested by geeves. One of the hoses goes up to the bank of air filter mentioned in my last post, the hose i burnt i cann't see for the life of me where it went oringally.
Anybody know???

Also getting a pneumatic tyre gun to rattle the hell out of the wishbone bolts tommorrow ;D

[niallinireland]

Hey All
Finally got the wishbone bushing replace but still cann't find where that rubber hose originated from that i burnt by accident. When i took it for a test run, i found the turbo is dead, won't even reach 3000rpm in five gear, turbo should kick in at 2500rpm.
Need to find where the hose originated from, its one of two hose running along the chassis from a device on the exhaust, guesting this regulates the turbo . The other hose from the exhaust runs up to a bank of air filters and the hoses on the other side of the air filters run into circluar device around the engine that i'm guest regular the air/diesel intake to the cylinders.
The burnt hose stop just about the top of the wheel arch on the driver side( driving position on right)

Any help would be brillant ;D

Niall

[geeves]

probably only 2 choises.
1 take a similar model for a test drive from a car sales When the dealers not looking have a very good look.
2 Try conecting the hoses up Youve only broken 2 hoses and it should be obvious which direction they go in so only 2 choises one way will work much better than the other and this will be right
Good luck

[Graham]

You might be able to replace just the damaged section of hose, with a 'connector' of some type either end of the new section and then you won't need to know what the hose was.

I had a good look at all the hoses when I connected my boost gauge, but they run some distances, cross over, etc that I just gave up and experimented with hoses off the intake pipe work/bits until I found boost. I found a vacuum line there too which was interesting as apparently diesels don't have vacuum!

Graham.

[James W]

The vacume source is a vacume pump on the back of the alternator.

With the turbo not boosting could it be the vacume line running to the control gate on top of the rocker cover inline with the inlet from the turbo?

[niallinireland]

Hey

Called into a local isuzu dealer and basically asked could i look under the hood of a similar model, which there very nicely said yes. The hose i was concerned about doesn't connect to anything, so that's that problem solved. ;D
I'm going to have another look at some of the other vaccum hoses beside the one i burnt cos i still reckon the turbo's down in power.

Thanks Guys
Niall

P.S. just in case anybodys thinking of changing there wishbone bushing, the pneumatic tyre gun didn't shift the bolt holding the wishbone to the chassis. Had to get a 4 foot scaffolding pole on the end of my socket bar to loosened them. Just be dam sure your socket set is up to it, if your going to try this.