Magnum Venus Plastech Powerhead UPPH-10000 - Manual (Page 16)

UPPH–10000 Powerhead Manual
Rev. 05/2012 Page | 16
Valve Block Disassembly:
1. Remove the two Hex head screws (F-HB-04C-56) from the front of the muffler and
remove the muffler.
2. Remove the four socket head cap screws (F-CS-04C-40-SS) from the valve block.
3. Unscrew the poly fitting nut from the male elbow (MPH-2539) located on the side of
the valve block. Remove the two end caps (MPH-2521) from the valve block.
4. Remove the pipe plug (PF-AP-04-SS) from the lower valve block (MPH-5001). Use a
7/16” socket on either of the two valve pistons (MPH-2517) and rotate until the hole
in the valve poppet (MPH-5005) aligns with the pipe plug port in the lower valve
block.
5. Insert a 7/32” hex wrench through the pipe plug port and into the hole in the valve
poppet (VPH-5005). (See Figure 1) Using a 7/16” socket or wrench unscrew either
of the two valve pistons (MPH-2517) and remove. Repeat removal of the second
valve piston.
Figure 1: Use a 7/16 socket or wrench on the top of the valve piston and
rotate to align the round hole in the poppet with the tapped hole in the block.
Insert hex wrench into the poppet and unscrew the valve piston from the valve
rod. Repeat process for second valve piston.
NOTE: The hole diameter in the valve poppet is .2685 (6.81mm) if a 7/32” hex
wrench is not available.