Magnum Venus Plastech Powerhead UPPH-10000 - Manual (Page 21)

UPPH–10000 Powerhead Manual
Rev. 05/2012 Page | 21
Pilot Valve Rebuild:
NOTE: The two pilot valves in the upper and lower end caps are the same. Start
with the pilot valve in the Upper end cap.
1. Remove the Spring housing (MPH-2541) from the Upper end cap (UPPH-10012).
Remove Spring (MPH-2533) with Inlet rod (MPH-2540). Turn the End cap over and
a small Spring (MPH-2526) will fall out. (See Figure 5)
2. Replace O-ring (O-B-012) on the Spring housing (MPH-2541) and the O-ring (O-U-
006) on the Inlet rod (MPH-2540). Coat O-rings and springs with SUPERLUBE
grease (SUPERLUBE). Set spring (MPH-2533) into the Spring housing (MPH-2541)
with Inlet rod (MPH-2540) facing up.
Figure 5
The MPH-2526 spring will be installed
from the bottom of the end cap.
NOTE: Do not install the small Spring (MPH-2526) at this time.
3. Screw the inlet spring housing (MPH-2509) into the upper end cap.
MPH-2526 Spring
MPH-2533 Spring
MPH-2540 Inlet Rod
MPH-2541 Spring Housing
O-B-012 O-Ring
O-U-006 O-Ring