Siemens Maxum II PD PA AP Service Manual page 78

Valves
4.5 Model 20 HT Valve
Figure 4-23
1. Align plunger valve body (17) and insert piston index guide pin into one of the three bottom
plunger valve body holes.
2. Rotate plunger valve body (17) to align the plunger valve body screw holes with cylinder
valve base (16) threaded holes.
78
Inserting Piston Assembly (15 and 18) into Base (16)
Maxum II Valves and Oven Components
Service Manual, 10/2018, A5E42019844001