FollowupID: 568008 Submitted:
Saturday, May 03, 2008 at 22:50
Member - Roachie (SA) posted:
What he means is that if you look at the wiring on the pump, you'll see that the red and black wires to the motor go in at the end away from the pump head. Of course the black wire is the earth.
The red wire goes from the motor to the pump head and then from the pump head there is another red wire that leads to the power source.
When you say you've checked there is power at the pump, did you mean before or after the pump pressure cut-off switch?
To check the MOTOR is getting power, you need to use the pointy bit of your multi-meter prongs and pierce the red and the black wires close to where they enter the motor body. If there is power showing there, then the motor could be stuffed. I had to replace a Shurflo
shower pump on my Patrol a year or so ago, because water had found it's way into the motor housing and siezed-up the bearing and generally killed it.
However, if there is no power registering on the multimeter, then there could be an earthing issue or a power supply issue. Check by earthing the black probe to a known-to-good earthing point and see if the meter registers. If so, then the earth wire is suspect.
Hope this helps.
Roachie
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