Re: Electrical nightmare 67
Since the problem is with the top, I suggest you disconnect the hyd cylinders to the top so as you're not 'exercising' the top during troubleshooting, and less load, read less current, on the pump.
The only feature being used by the horn relay in this circuit is just the buss bar, a connection point between the battery and load.
You can disassemble the terminals and wire brush the terminals and buss bar, doesn't hurt.
You stated the engine quits running when top is commanded to move. This statement suggests the battery is not charged enough, and/or too small of capacity. The alternator size should help also. Standard size is 37A, more accessories, the bigger alt, aka, 55A or 63A. But just the same, if running an OE mechanical voltage regulator, depending upon the battery charge condition, the more running time above 2000 RPM, the more the battery gets charged. So with more load demanded from the electrical system, the alt maxes out, all the power goes to the top circuit, and engine dies, none left over for the engine to run.
So, back to the pump. Generally, the pump is exercised during engine idling. Therefore, the alt I not being used, and battery supplies power. So with the top load disconnected, the pump should work with engine continuing running. You may want to external charge battery and maybe select ENG START to assist in the extra power drawn, with engine off.
If pump works and engine runs in no-load condition, I would suggest the top is misaligned, and/or joints need lubing.
If the engine dies, while working the pump, plug in a separate power line to the pump for test. If it works, then problem is with the switch, circuit breaker internally, or the wiring. If it does not work, also do the same for the ground side and wire it back to the battery.
If it works, then check all grounds, use a star washer.
Congrats on finding the other two problems, this above should give you ideas of what to do. Keep up the good work.
Give a man a rescued dog for the health of both their souls. May 2017 ROTM Winner - Thank you!
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
CUBS - 2016 World Series Champions - Thank you, Joe Madden … enjoy your next chapter.