Portable Pressure Washer Familiarization and Troubleshooting Guide Section 7 • Large Frame Pump
Thermal Bypass Actuator Removal Refer to Figure 7.16 and:
To remove the three (3) outlet (high pressure) check valves, refer to Figure 7.15 and proceed as follows:
Figure 7.16 — Thermal Bypass Actuator Removal
Figure 7.15 — Outlet Check Valve Removal
Item 1 2 3 4
Name Puller tool Backup rings Check valve O-rings
Item
Name
1
Pump crankcase
2
Spring
3
O-ring
1. Insert the ‘T’ handle through the puller tool thimble (item 1).
4
Spacer plate
5
Head gasket
2. Turn the puller lower tee handle fully counterclockwise.
6
Pump head
3. Insert the puller down through the high pressure port tower.
7
Insert brass rod here
8
Thermal bypass actuator
4. Turn the puller upper tee handle clockwise until the puller threads have engaged the check valve threads.
1. Remove the small bypass piston. 2. Obtain a brass rod approximately 1/4” (5.35 mm) in diameter and 7” long.
NOTE: Do not turn the tool in too far. An engagement of 2 or 3 threads is sufficient.
3. Insert rod from the unloader/pressure regulator valve side of the head.
5. With the puller threads engaged with the check valve threads, turn the tool lower handle clockwise to remove the check valve. Both the high pressure port tower and the outlet check valve will be removed.
4. Tap the rod gently with the dead blow hammer to free the actuator.
6. Repeat steps 2 to 5 for the other outlet check valves.
85
