Portable Pressure Washer Familiarization and Troubleshooting Guide Section 4 • Small Frame Electric Pump
CAUTION: The motor adapter bolt holes line up with the holes on the piston housing in one position only. Rotate the motor housing until proper alignment is achieved.
Final Assembly and Test
NOTE: Torque the outlet caps at this time, if not done previously. Verify that all other fasteners have been torqued to proper values.
4. Referring to Figure 4.19, install the three (3) M6-1.0 x 20 socket head cap screws into the mounting screw holes on the motor housing and thread them into the piston housing. Because of piston return spring tension, the motor housing will remain elevated.
1. Position the motor cover housing over the pump assembly, feeding the two white wires up through the channel in the housing, as show on Figure 4.1. 2. Insert the bayonet plug into its mating connector in the housing and switch assembly.
Figure 4.19 — Motor Assembly
3. Insert the spade connector into its mating spade lug in the housing and switch assembly. 4. Fasten the housing and switch assembly to the motor cover housing with four (4) Plastite 6-19 x 0.75” screws. 5. Reassemble the pump into the pressure washer housing, taking care to avoid pinching wires, etc. 6. Cthe pressure washer to a water supply and connect the high pressure hose, wand, and spray gun. Connect the pressure washer to line voltage through a GFCI receptacle. 7. The pressure washer should provide a spray when the spray gun trigger is depressed. If the unit does not produce a spray, the auto switch may need to be adjusted, as follows: a. Disconnect the pressure washer from line voltage and from the water supply. b. Disassemble the unit so that you can get to the two taptite screws.
Item
Name
1
Electric motor
2
SHCS, M6-1.0 x 20mm
3
Piston housing
c. Loosen the screws enough to be able to laterally move the auto switch housing further away from the piston housing. d. Tighten the taptite screws to recommended torque value. e. Reassemble the unit, reconnect the water and line voltage and depress the spray gun trigger again. Normal unit operation should be obtained.
5. Snug each M6-1.0 cap screw, alternating between screws until the housings meet. Tighten screws to the torque value specified in the Torque Chart, found on Figure 4.2 (Exploded View) at the beginning of this chapter.
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