Portable Pressure Washer Familiarization and Troubleshooting Guide Section 6 • Medium Frame Pump
Exploded View Parts List Qty
Description
25
1
Thermal actuator spring
O-ring, outlet port
26
1
Thermal actuator piston
6
Check valve
27
3
Piston
4
3
O-ring, check valve
29
1
Oil breather cap
5
1
Head sub-assembly
30
1
O-ring
6
3
Bearing ring
31
1
Axial cam bearing assembly
7
3
High pressure seal
32
1
Axial cam assembly
8
3
Check valve
33
1
Engine adapter
9
1
Thermal bypass actuator and stem
34
1
Engine adapter bearing assembly
10
1
Trapped line pressure seat
36
1
O-ring
11
1
Chemical injection venturi assembly
40
4
Button head cap screw, 5/16”-24
12
1
Chemical injection spring
or 4
Socket head cap screw, 5/16”-24
13
1
Chemical injection ball
41
4
O-ring, if button head
14
1
Chemical injection fitting
or 4
Flat washer, if socket head
15
1
Unloader ball spring
43
3
Piston pivot shoe
16
1
Trapped line pressure piston assembly
44
6
Socket head cap screw, M6-1.0
45
3
Piston return spring
17
1
Unloader ball
46
1
Pump crankcase assembly
18
1
Ball seat assembly
47
1
Spacer plate assembly
19
1
Unloader spindle assembly
48
3
Pilot ring
20
1
Unloader handle
49
1
Head gasket
21
1
Setscrew, M6-1.0 x 8mm
50
6
Socket head cap screw, M8-1.25
22
1
Plastic cap
51
6
Steel washer
23
1
Unloader spring
24
1
Thermal actuator piston o-ring
Item
Qty
Description
1
3
Outlet port cap
2
3
3
Item
55
