Magnum Venus Plastech Powerhead UPPH-10000 - Manual (Page 22)

UPPH–10000 Powerhead Manual
Rev. 05/2012 Page | 22
4. Remove the Stem seal (MPH-2511-01) from the bottom of the Upper end cap
(UPPH-10012). Remove the Seal guide (MPH-2512) with the Spring (MPH-2528).
Replace O-ring (O-B-012) and coat O-ring and stem with SUPERLUBE grease
(SUPERLUBE). Drop the small Spring (MPH-2526) into the stem seal bore, the
spring should center itself onto the end of the Inlet rod (MPH-2540). (See Figure 6)
Figure 6
Install the MPH-2526 after the spring housing (MPH-2509),
Spring (MPH-2533) and inlet rod (MPH-2514) has been installed in the top of the end cap.
5. Insert the Spring (MPH-2528) with the Seal guide (MPH-2512) into the end cap. Set
the small end of the Seal guide (MPH-2512) onto the Spring (MPH-2528). Set a new
O-ring (O-B-008) on top of the Seal guide. Screw the Stem seal (MPH-2511-01) with
Valve stem (MPH-2513) into the Upper end cap. (See Figure 7)
Figure 7
6. Repeat the Pilot valve rebuild on the Lower end cap.
MPH-2513 Valve Stem
O-B-012 O-Ring
MPH-2511-1 Stem Seal
O-B-008 O-Ring
MPH-2512 Seal Guide
MPH-2528 Spring