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Halleluyah. Remove FOR/REV contacts completely from forklift. Completely dismantled. Little deposit on plunger. Wire brushed it off. cleaned everything with brake cleaner. sprayed it with graphite, reassembled and voila It works perfectly so far. About an hours worth of wharehouse work. Will put it through a few heavy days this week and see. Let me see if I have this right. I put into forward it tries to close contact maybe draws a little more than it should and trips PMT.
does that make sense. Just by the way what is the little unit on the side of the FOR/ REV contact looks like two diodes and a thermocouple?? its in line with the small wire connections?
thanks to all
Thanks for the response.
-Panel/ Control card is EV -100TLT1A
Model ERC050JAN36 serial 483655
Will have a rental 36V here this afternoon so I will be able to eliminate or confirm battery as source of problem.
Will pull contacts out and check.
Could be different condition of moving parts in contactor. Reverse may have more resistance to movement due to wear, dirt, etc. Also helpful to know truck information or at least the panel.
Sorry just noted the info in the header.
Will check Voltage as you recommend. Plenty across battery 37.6 but I agree under load could be an issue. Any real reason why if dislikes going into reverse more than forward, also the very sudden nature of the problem??
Most batteries don't last 10 years. You have done well my son.
What make, model, and panel do you have? Are there any fault codes displayed?
What is the voltage under load? Operate tilt back into relief, read voltage at that point.
Problem sounds like battery as you have to press the contactor in. That indicates that there is not enough voltage to draw the contactor in, but once in there is enough "hold in voltage" to keep it engaged.
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