Jensen 530 problem

[rapalaman]

Hi, wonder if anyone could point me in the right direction please? The feed rollers on my 530 have just started to run erratically. They "pulse" in forward and reverse, not to a regular pattern. Still seems to have the pulling power to get the job done, somewhat slower, but obviously somethings not right

[treequip]

Could be short of hydraulic oil

[dan494]

Anti stress kicking in? Revs ok and sensor working?

[Peter]

No stress won't affect reverse.

 

Is the throttle slipping? Anything less than full revs will affect roller speed.

[dan494]

Another thought that's probably not the cause but similar issue I had with my one when my top roller acted like you describe was the bolts holding is the roller to the shaft had worked their way loose so stopped when was under pressure.

[rapalaman]

Cheers guys - I'll have a check over in the morning. Revs are on full, throttle not slipping. Pulsing when nothing being fed in. Today it took about 3 or 4 minutes before the rollers would turn at all

[CJM]

It'll be the black or silver solenoid on top of the hydronic unit which is to the right hand side of the hopper. If your rollers are sticking tap the solenoid with a hammer your rollers will start to work. It's happened to a few different Jensens that I've used, it's a quick fix but a new solenoid is need eventually

[rapalaman]

Quick update which may help others with the same problem in the future. I ran it into Forest Arborcut where I got it from last year. They tried trial by substitution of the solenoid, switch, and circuit board. Turned out to be neither - it was the speed sensor had backed off a fraction and wasn't reading properly. Adjusted to end of its' thread and bent the bracket slightly to get it closer to the flywheel and all is well I'm pleased to say. Simple solution that I wish I'd spotted as it was a 260 mile round trip and sorted in just over an hour.

[Peter]

I had the same issue with mine, but it was the flywheel walking down the shaft that opened the gap, as they hadn't torqued the bolts in the taperlock bush properly.

 

You shouldn't have to bend the bracket to gap it correctly, unless it's a different setup to mine.