Hi thanks all you, if there are some way to lower on the setting it may be good to make a test and see what happen. but it is a good point the battery voltage because i read sometime less than 47 volt. the only setting that i can see on the service mode is 48 to 36 or 36 to 48 but i going to take a look more close on the setting, the model is 7FBCU25 toyota
are the tips sticking all the time you can try lowering the settings in the dash display
new contactor, new tips on a 48 vdc elec. Tips keep burning up
What model is this? Isn't 7FGCU a gas/lpg truck? Don't the newer electric trucks have scr controled hydraulic pump motors? Is that working ok?
As the battery drops in voltage, current increases. If the contactor is suppose to see 48 vdc, and the battery is only supplying 46.5 volts, the contactors will not pull in as tight.
This sloppy connection on the contactor tips means resistance. More resistance w/ greater current results in heat, then burnt tips
I know I get real hot when I meet alot of resistance, thats because I have alot of patience, mostly very short, but none the less, alot of patience.
can be battery issues. not fully charged, weak cell, low water, weak electrolite etc....
really i had have this problem on diferent machine, i replace the contactor for a new, and still do the same most of the cases it happen on pump connactor i read 44 amp running lifting emty
i check for connection and motor brush all are ok
For what ever reason, the contactor tips are not making good connection, or the hydraulic pump(s) it is operating is, tired and dragging, causing excessive current flow