Electrical fault in crane

[Wood wasp]

Today I had a fault with crane in that all functions from one lever are working flat out - there's no phasing them in. It was working fine till I went over a stump and came down with bit of a bang.

 

A fellow contractor in the FCA (who's been an immense help to me as a new start) says the cab will have moved slightly and pinched wires resulting in a short. This I can understand but what I'm not exactly sure of (despite best efforts of FCA chap) is how every function on that lever can be affected? Something to do with a fault to earth? On one function I tested The voltage leaving the ISP control board connection and it was 9v but at solenoid connection on valve chest it was 24v - hence the all or nothing.

 

So tomorrow I need to track down the fault in loom and repair, any tips on how best to trace fault?

 

Thanks in advance

W

[combined tree services]

Start off by seeing if you can get hold of a schematic wiring diagrame , from there you should be able to trace which section/ side of the loom may be effected , from there it's a game if hide and seek with the loom

[Wood wasp]

Yes makes sense CTS, bit of patience with a meter tomorrow I think!

[Brushcutter]

If we're talking forwarder/harvester crane have you checked the connections around the chair? Few times I've pinched or knocked something loose there.

[Wood wasp]

Forwarder crane

 

Yes had a poke around, will double check tomorrow and there's a coupling under floor of cab which I'll split and take reading from tomorrow, hopefully establish which section of loom has fault and from there hopefully be able to see pinch point

[County 764]

I get this fault sometimes with the 1210. Normally switching the crane on and off sorts it but failing that a hard kick to the ISP boxes gets it going just fine.

[Wood wasp]

Interesting County, do you know what it is that needs reset either by switch on/off or a good kick?

[County 764]

Are you getting a error on the IPS box? if so a red led should light up if its the same as the 1210a. You've probably tried pulling the cables out of the boxes but if not give that a go at resetting it.

 

I was having exactly the same issues as you and it still happens from time to time but not as bad as it was when I got the machine. Now all I have to do is switch the crane on &off and it works ok.

[Wood wasp]

No error lights, top two LEDs are green and tried swapping cards about too. From your experiences it sounds like something just needs reset...

[Wood wasp]

Got back to machine yesterday, it was a faulty ISP card that was throwing one ISP box out