Magnum Venus Plastech Powerhead Powerslide VPH-2500 - Manual (Page 6)

Powerslide Powerhead
NOTE
The hole diameter in the valve poppet is .2685 (6.81mm) if a 7/32” hex
wrench is not available.
Unscrew ether of the two valve pistons (MPH-2517) and remove. Repeat
removal of the second valve pistons.
6. Remove the button head cap screw (F-BHCS-04C-08-SS) from the front of the
lower valve block (MPH-2516). Twist and pull the upper valve block (VPH-4257
or MPH-2515) from the lower valve block (MPH-2516). Remove the valve rod
assembly from the valve block.
7. Remove the two cap screws (F-CS-1024-06-SS) from each of the two valve
exhausts (MPH-2522). Pull both of the valve exhausts from the valve blocks.
Remove the diaphram (MPH-2529) from the lower valve block (MPH-2516).
(See Figure 2)
Figure 2
Lift the inner edge of the
diaphram up and remove
from block. Coat the
diaphram bore with lithium
grease.
NOTE
Avoid putting any scratches in the valve blocks. To remove the diaphram
use a small screwdriver and push the center riser on the diaphram to one
side and slide out.
Repeat the removal of the diaphram from the upper valve block (VPH-4257 or
MPH-2515).
8. Remove each O-ring and replace with new. Coat every new O-ring with lithium
grease. Coat the diaphram bore and both valve piston bores with lithium grease
before assembling. Use a wire brush to clean the valve rod threads of any dry
Lock Tite
® .