Indycars
Well-Known Member
I had a fuel pump failure yesterday. I was on my way to Advanced Auto where I did work to recycle
some oil when it failed.
First I tested by connecting power directly to the pump, all I got was sparks when I made the
connection. Pump did not turn over.
I pulled it apart to see what went wrong. The armature was locked up, I could barely turn it by hand
with the rotor and vanes removed. It also appeared to have some water on the motor side.
The sleeve bearing is steel (Magnetic) when I was expecting a Oil-Embedded Sleeve
Bearing. Maybe I should buy a new pump and install Oil-Embedded Sleeve Bearing
from McMaster-Carr. I'm also considering removing the brass cup plug and threading
the hole so I can seal it. Then drilling the sleeve bearing so I can lube the bearing
periodically. It would appear that the little sponge washer does not have the capacity
to keep the steel sleeve bearing lubricated. Or I could pull the pump every winter and
add some lube to the sponge washer with the shaft out, then re-assemble the pump again.
But this does nothing for the brushes. I did find that Quick Fuel sells the end cap with
brushes for $26, looks like it would fit the Holley pump that I have.
https://www.holley.com/products/fue...service/fuel_pump_repair_kits/parts/30-126QFT
The little hole just below the cup plug goes all the way thru into the sponge washer
cavity. Maybe that's the solution, skirt some oil thru this hole periodically.
.
some oil when it failed.
First I tested by connecting power directly to the pump, all I got was sparks when I made the
connection. Pump did not turn over.
I pulled it apart to see what went wrong. The armature was locked up, I could barely turn it by hand
with the rotor and vanes removed. It also appeared to have some water on the motor side.
The sleeve bearing is steel (Magnetic) when I was expecting a Oil-Embedded Sleeve
Bearing. Maybe I should buy a new pump and install Oil-Embedded Sleeve Bearing
from McMaster-Carr. I'm also considering removing the brass cup plug and threading
the hole so I can seal it. Then drilling the sleeve bearing so I can lube the bearing
periodically. It would appear that the little sponge washer does not have the capacity
to keep the steel sleeve bearing lubricated. Or I could pull the pump every winter and
add some lube to the sponge washer with the shaft out, then re-assemble the pump again.
But this does nothing for the brushes. I did find that Quick Fuel sells the end cap with
brushes for $26, looks like it would fit the Holley pump that I have.
https://www.holley.com/products/fue...service/fuel_pump_repair_kits/parts/30-126QFT
The little hole just below the cup plug goes all the way thru into the sponge washer
cavity. Maybe that's the solution, skirt some oil thru this hole periodically.
.