| Author |
Message |
Mike Eades (Mike4905)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, November 23, 2004 - 4:14 pm: | |
I was at U.S. Coach with Luke & Bill and the crew. I was plugged into their power and they pulled my complete rearend for new axle tubes. When they hooked up a couple of brake air lines they noticed electric current jumping between the fittings. Nobody had an idea. I am stumped. I assume I have aground problem, but I can't seem to find the problem. Any Ideas? Mike4905 |
Ed Jewett (Kristinsgrandpa)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, November 23, 2004 - 8:20 pm: | |
Try pulling breakers/fuses one at a time to try to isolate the circuit. If that doesn't help and your batteries are in the original location, look at the battery cables that go through the service tunnel in the ceiling of the bays. I've seen the insulation split and expose copper conductor on a 4905.
HTH Ed |
Ed Jewett (Kristinsgrandpa)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, November 23, 2004 - 8:29 pm: | |
I assumed that the problem was DC, if you were hooked to shore power then do the same thing with the breakers/fuses. Check any 220V ckts first. I did a service, to a mobile home, for a friend and when the power co hooked up the power, the frame was hot on the mobile home, I switche the two phase wires at the disconnect and the problem went away.
Ed. |
frank-id
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, November 23, 2004 - 8:33 pm: | |
Chasing a ground path is very difficult. This is not required. Add some new ground cables and jumpers. You just cannot have too many grounds. Many GMC bus have very poor grounds.. I manipulate the ground cables in a fashion the there is a good direct battery ground to the starter. The starter does not pull the power thru body connections.
I have wired some GMC battery switches so the battery connection to the starter are not interupted. The disconnect switch disconnects only power being supplied to the rest of the power needs.
Frank in Idaho |
John that newguy
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, November 23, 2004 - 10:57 pm: | |
Hmmm.... reversed leads to any air pressure indicator/sensor can do
it, but since they short to ground, wouldn't it be safe to assume
that the spark they see is the current from the sensor when they
disconnect/reconnect the line, making and breaking the circuit? |