New Unit Information 02.2004
Unit functions
HD 5/12
Page 10 / 12
1 Retaining plate
2 Pressure valve
3 Retaining plug
4 Non-return valve
5 Spring
6 Ball
7 Cleaning agent hose connection
8 Injector
9 High-pressure connection
10 Cylinder head
Cylinder head
11 Connection bore (pump pressure)
12 Connection bore (dynamic pressure)
13 Screw plug
14 Connection bore to pressure switch (only
indicated here)
15 Overflow valve
16 Valve seat
17 Water connection
18 Suction valves
19 Cylinder head screws
20 Piston
1
2
3
2 3
2
3
5
6
7
18
18
9
3
4
8
10
11
17
18
19
20
13
15
16
14
12
