Cross-Sectional View

Cross-Sectional View Portable Pressure Washer Familiarization and Troubleshooting Guide Section 4 • Small Frame Electric Pump

A typical small frame electric pump is shown in Figure 4.1 in cross-section.

Figure 4.1 — Small Frame Electric Pump (cross-sectional view)

Portable Pressure Washer Familiarization and Troubleshooting Guide Section 4 • Small Frame Electric Pump

Cross-Sectional View Parts List

Item Qty. Description

1 1 O-ring 2 4 O-ring 3 1 Shuttle valve spring 4 1 Shuttle valve 5 3 O-ring 6 3 Outlet port check valve cap 7 1 Tie wrap 8 2 O-ring 9 1 Motor assembly, complete 10 1 Motor cover housing 11 1 Housing and switch assembly 12 1 Foam air filter 13 1 Axial cam idler shaft 14 2 Bearing washer 35 x 55 x 3mm 15 1 Needle thrust bearing 35 x 52mm 16 1 Axial cam/gear assembly 17 1 Bearing washer 40 x 60 x 1mm 18 1 Needle thrust bearing 40 x 60mm 19 3 SHCS M6-1.0 x 20mm 20 1 Bearing washer 36 x 60 x 6mm 21 3 Piston spring retainer 22 1 Piston housing 23 3 Piston return spring 24 3 Oil seal 25 3 Pilot spacer Item Qty. Description

26 3 High pressure water seal 27 4 Lock washer, M6 ribbed 28 4 SHCS M6- 1.0 x 35mm 29 3 Piston 30 1 Pump head 31 3 Inlet check valve 32 3 Outlet check valve 33 1 Hex socket set screw w/ Locktite DO NOT REMOVE 34 1 Taper plug DONOT REMOVE 35 1 Pop off valve spring 36 1 Pop off valve ball seat 37 1 Pop off valve check ball 38 1 O-ring 39 4 Rubber mount 40 2 Taptite screw, M4-0.7x10mm 41 4 Plastite screw, 6-19 x 0.75” 42 1 Backup ring 43 1 O-ring 44 1 Auto switch piston return stop 45 1 Auto switch piston return spring 46 1 Auto switch piston assembly 47 1 Backup ring 48 1 Retainer cap 49 1 Auto switch grommet 50 1 Auto switch 51 1 Auto switch housing