23
Piston Housing Removal
Refer to Figure 4.4 for this procedure.
Before disassembling the piston assembly, do the following:
1. Remove the three (3) pilot spacers (item 3). These will
just slide off.
2. Remove the three (3) check valve o-rings (item 4).
3. Remove the shuttle valve o-ring (item 5).
WARNING:
There may be up to 50 pounds of
stored energy when separating the piston housing
from the motor. Remove these bolts slowly and
evenly.
4. Using a 5mm wrench, gradually loosen each of the three
(3) M6-1.0 x 20 bolts that hold the motor to the piston
housing, as seen in Figure 4.5.
NOTE:
Piston housing is full of gear oil. Take care
to handle the fluid safely.
Section 4 • Small Frame Electric Pump
Portable Pressure Washer Familiarization and Troubleshooting Guide
Item
Name
1
Piston housing
2
Piston
3
Pilot spacer
4
Check valve o-ring
5
Shuttle valve o-ring
Item
Name
1
Electric motor
2
SHCS, M6-1.0 x 20mm
3
Piston housing
Figure 4.4 — Piston Housing
Figure 4.5 — Motor Removal
