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Portable Pressure Washer Familiarization and Troubleshooting Guide
Section 5 • Small Frame Gas Pump
Engine Adapter
Refer to Figure 5.9 when following this disassembly
procedure.
Figure 5.9 - Engine Adapter & Axial Cam
Item
Name
1
Thrust washer
2
Cage needle bearing
3
Retainer washer
4
Axial cam
5
Radial ball bearing
6
Engine adapter
1. Remove the thrust washer.
2. Remove the cage needle bearing.
3. Remove the retainer washer.
4. Remove the axial cam/radial ball bearing assembly.
Because the bearing is pressed onto the cam, the cam and
bearing must be replaced as an assembly.
5. If present, the pipe plug was installed with a thread-
locking compound and should not be removed.
Part 3 - Inspection
Seals, O-Rings, and Gaskets
Once the pump is disassembled, make a careful inspection of
all seals and O-Rings for any defects that may affect the
proper operation of the pressure washer.
Piston & Spring Assemblies
Referring to Figure 5.10, inspect the three (3) pistons
carefully. Reject any piston that is scratched, dented, or
otherwise damaged.
Figure 5.10 - Piston Assembly
Item
Name
1
Retainer
2
Piston
3
Spring
CAUTION:
or use a piston to strike any object.Do not drop the
piston. Dropping the piston will result in damage.
43
Do not strike a piston with any object
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Troubleshooting
