Forum Discussion

kjk66ss's avatar
kjk66ss
Explorer
Nov 12, 2015

Fuel station/pump

Hey everyone, I have a 2009 raptor mp30 5th wheel. Bought the trailer about 2 years ago and have never had the pump working.

the pump initially kept blowing fuses so I researched and ended up replacing the gears and upon removal noticed the the brushes inside the motor kind of grenaded inside so I got a new motor.

I put everything together and went to power up and nothing but a popped fuse, so I replace the fuse and try again . This time the motor turned for a few seconds and then shut off. Again blew a fuse, and replaced it. Well now it's not blowing fuses but the motor is not doing anything.

I replaced the on off switch and the 5 minute dial timer and still nothing. I verified the 12 volts at the wire coming off the battery.

I will try hard wire to a spare battery but can you guys help me with the wiring,

The pump motor has a red and one black wire coming from it.
The wires running to the battery are black and one white.
The black wire from the battery is giving me 12v but when I touch it to the red wire on the pump while the white from the battery and black from the pump are wired together I get nothing.
Toy Haulers
  • Bedlam's avatar
    Bedlam
    Moderator
    Nov 12, 2015
    Most of the pumps use plastic gears that swell when sitting in ethanol based fuel. Swap out the pump gears and use non-ethanol fuel.
  • r1Mk's avatar
    r1Mk
    Explorer
    Nov 12, 2015
    GPI Overhaul Kit (For EZ-8)Incl. Motor Shaft Key, 2 Gears, and Replacement Seals - 13750005 https://www.amazon.com/dp/B00BZ0O1O0/ref=cm_sw_r_awd_S-brwbM140M2R

    This should do the trick. I had the same issues as you and this fixed it.
  • lincster's avatar
    lincster
    Explorer
    Nov 12, 2015
    Take the gears out and turn the motor on.
    If it works, then you can eliminate everything in the system up to the gears.
  • kjk66ss's avatar
    kjk66ss
    Explorer
    Nov 12, 2015
    Will try powering the motor with out the gears. I have the GPI overhaul kit installed. Did the overhaul when I replaced the motor.

    i want to make sure the wiring is correct. The ground from the pump and the ground from the battery are wired together and then wired to load1 on the dial timer. Then the hot wire from the battery is wired to the on/off switch(located next to the dial timer). Then coming from "line1" is a short wire going to the on/off switch.

    Any one have any experience with this wiring? I'm not very good with knowing which wire should go where.
  • kjk66ss's avatar
    kjk66ss
    Explorer
    Nov 14, 2015
    Ok figured out the problem and I'm a little frustrated by it..

    Was getting power to everything so I decided to pull the pump assembly apart AGAIN. Well when I took the bottom off , (the part that houses the brushes) bunch of stuff came out. What happened is the brushes became dislodged somehow and grenaded inside and broke the plastic housing that hold them.

    What irritates me about this , is that's exactly why my original pump quite working. Same exact thing happened. Why is my pump doing this twice.

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