JCB 8015 arm not lifting

[Moog]

Here we go, there was no audible clicking and not much movement. Off is control arm up, On is arm down. The buzzing in background was the ignition buzzer. I have a video which I was going to attach but I cannot add it from my iPad photo album. Any ideas how I can add it?

 

[Gunners]

Here we go, there was no audible clicking and not much movement. Off is control arm up, On is arm down. The buzzing in background was the ignition buzzer. I have a video which I was going to attach but I cannot add it from my iPad photo album. Any ideas how I can add it?

stick it on youtube and post the link here

 

[Moog]

Here we go, there was no audible clicking and not much movement. Off is control arm up, On is arm down. The buzzing in background was the ignition buzzer. I have a video which I was going to attach but I cannot add it from my iPad photo album. Any ideas how I can add it?

 

[diggerjones]

Does it have be earthed, it looks light there's an electrical spark in the vid

 

[CPS]

If you look into the valve, is the spool moving? It looks to be in the video. You won't get alot of movement.... i will only move a few mm

 

[V8Druid]

Does it have be earthed, it looks light there's an electrical spark in the vid

coil has an earth to it Dyl, but I totally agree - there appears to be an electrical spark in the centre of the cartridge shuttle ... coil has gone/is leaking to earth BTLS - was immediately visible and having watched it full screen the first spark is the most pronounced ....

 

[Moog]

If you look into the valve, is the spool moving? It looks to be in the video. You won't get alot of movement.... i will only move a few mm

It was difficult to see, I thought it was an air bubble coming out the top, but looking at the vid it looks more like a spark. We were not sure what to expect. We may have to look again more carefully tomoz.

 

[V8Druid]

It was difficult to see, I thought it was an air bubble coming out the top, but looking at the vid it looks more like a spark. We were not sure what to expect. We may have to look again more carefully tomoz.

you need a known good coil to swap that out with .... unless my eyes deceive me, you've found the issue .. and what an issue to find

 

[CPS]

It was difficult to see, I thought it was an air bubble coming out the top, but looking at the vid it looks more like a spark. We were not sure what to expect. We may have to look again more carefully tomoz.

If it is a spark its something i've never seen before... although possible i guess, though id expect it to blow a fuse if it was.

Have a look through the holea in the side... you'll see the spool move if it is moving.

 

[jd6820]

It was difficult to see, I thought it was an air bubble coming out the top, but looking at the vid it looks more like a spark. We were not sure what to expect. We may have to look again more carefully tomoz.

Just looks like an air bubble to me? Can you check valve movement by putting a small screwdriver into the hole on the end and push the valve towards the solenoid. Don't go mad but as @CPS says it should move a few millimeters and quite freely at that too. Can't see clearly to see if it is travelling as it should do.... Alternatively post another video with a close up of the holes on the side of the valve and look for a metal rod shuttling between the holes.

 

[jd6820]

If it is a spark its something i've never seen before... although possible i guess, though id expect it to blow a fuse if it was.

Have a look through the holea in the side... you'll see the spool move if it is moving.

Not possible I'm afraid chaps, as @CPS points out a fuse would blow and even if a fuse didn't the wiring would melt if left energised for any amount of time. You would also lose the coils ability to magnetize as proven in earlier tests.

 

[V8Druid]

Just looks like an air bubble to me? Can you check valve movement by putting a small screwdriver into the hole on the end and push the valve towards the solenoid. Don't go mad but as @CPS says it should move a few millimeters and quite freely at that too. Can't see clearly to see if it is travelling as it should do.... Alternatively post another video with a close up of the holes on the side of the valve and look for a metal rod shuttling between the holes.

have looked at it hard many times in full screen and can't decide if it is a bubble or a spark ?????????

 

[jd6820]

have looked at it hard many times in full screen and can't decide if it is a bubble or a spark ?????????
View attachment 67844 View attachment 67845

Bubble... If it was going to spark it would be between the coil core and the valve stem, no reason for current transfer at that point on the valve. I'd even go as far to say physically impossible?

 

[Moog]

Pushed small Allen key in there, was no movement to start with, then the shuttle started to move - see video

 

[V8Druid]

Pushed small Allen key in there, was no movement to start with, then the shuttle started to move - see video

so does the solenoid now produce the same movements?

 

[Moog]

This is it connected to ignition and dead man’s handle, the shuttle seems to be working now - should I refit everything and try the arm to see if that was the problem?

 

[CPS]

This is it connected to ignition and dead man’s handle, the shuttle seems to be working now - should I refit everything and try the arm to see if that was the problem?

Yep go for it

 

[jd6820]

This is it connected to ignition and dead man’s handle, the shuttle seems to be working now - should I refit everything and try the arm to see if that was the problem?

Perfect, thats more like what we want to see I’d say a bit of seal jammed in there or crud and it was sticking.

 

[diggerjones]

Yeah get it back together

 

[Moog]

She is working now guys - really appreciate all your support, it has taken some time, but cost us nothing in parts, so top work. if you were all closer I’d buy you a beer!