Part Location Diagram of 048-0074 Powermate Piston & Cylinder Assembly
See part C-11 in the diagram
( Grid squares measure 1x1 inch )
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Piston & Cylinder Assembly 048-0074

 Fits your L0502710!
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30 - 60 mins 

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PartSelect Number PS9868931
Manufacturer Part Number 048-0074
Manufactured by Powermate
Troubleshooting
This part works with the following products:
Compressor.
This part works with the following products:
Powermate.
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Customer Repair Stories
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Sorry, we couldn't find any existing installation instruction that matched.
Compressor pump not filling ballast tank
1.) Disassemble the pump/motor assembly located on the top of the unit:
a.) Remove outermost plastic shroud. You will need a nut driver with an extension to get to one hex screw - a good Xcelite set will do.
b.) Remove inner plastic shroud with filter sponge. If filter sponge is clogged, replace it.
c.) With plastic shrouds removed, begin disassembling the metal pump components. Start by removing the four screws around the dome cover.
d.) Remove last two screws holding valve plate to piston housing case and remove.
e.) Remove the piston cylinder from the piston housing by lifting up.
f.) Loosen the clamp screw holding the piston rod to the bearing. Pull the piston away from the bearing - you might have to wiggle or pry on it a bit to slip it off. If you have to pry it off, pry only the piston rod itself - take care not to damage the bearing.

2.) Inspect gaskets for wear or damage - replace as necessary. For Piston and Cylinder assembly kit purchased from Parts Select, a gasket mated between the cylinder and valve plate will be included.

3.) Inspect valve plate for bent valve reeds or for debris caught between the valve reeds and the plate. Remove any material found and replace valve reeds as necessary.

4.) Reassemble by following instructions from step 1 in reverse. Mind the torque specifications - images are available online for these torque specifications.
  • Timothy from Chandler, AZ
  • Difficulty Level:
    Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Nutdriver, Screw drivers, Wrench (Adjustable)
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Model Cross Reference
This part works with the following models:
PartSelect Number: PS9868931
Manufacturer Part Number: 048-0074
Brand
Model Number
Description
Powermate
CL0501510
Compressor - Air Compressor
Powermate
CL0502710
Compressor - Air Compressor
Powermate
L0501510
Compressor - Air Compressor
Powermate
L0502710
Compressor - Air Compressor
Powermate
P0502010
Compressor - 20 Gallon Oilless, Single Stage, Direct Drive, Electric Air Compressor
Powermate
VP0502510
Compressor - Oilless, Single Stage, Direct Drive, Electric Air Compressor
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