Magnum Venus Plastech Pro Series VPRO-45220 22:1 & 7:1 - Manual (Page 31)

VPRO-45220 Series Resin Pump Manual
Rev. 11/2013 Page | 31
Install Cylinder Head:
1. Be sure the pump is in the center stroke position.
2. Lubricate the following items with grease (08465):
a. O-Ring on the piston
b. Piston Rod above the center section (85728-3)
c. Threads on the center section where the cylinder head fits
d. O-Ring on the top of the center section.
e. Inside of the cylinder head
3. Install the o-ring on to the air motor piston
4. Install the o-ring onto the top of the center section (85728-3)
5. Thread the Air motor Piston onto the Piston Rod and snug tight.
6. Thread the Hex nut onto the Piston rod above the Air motor Piston and snug tight.
7. Screw the cylinder head onto center section (85728-3) and tighten.
Install Packing Set:
1. Lay the pump on its side to make it easier to insert the balls and springs.
2. Lubricate each packing and the female compression ring with MVP Red Grease (6706-
2-1) and assemble them in the following order.
a. Female compression ring (top of stack). The flat side should be toward the top of
the pump and the concave side should face the packing set. Fill the concave
side full of Red Grease (6706-2-1)
b. Piston rod packing set. Fill the inside of each packing with Red Grease (6706-2-
1), and be sure to install them in the order in which they were removed. The
concave side of the packing should face toward the bottom of the pump. See
below
c. Male compression ring (bottom of stack). The lip of the male compression ring
should face away from the packing set and toward the spring.
d. Lower packing spring. The smaller coil of the spring fits over the lip of the male
compression ring.
e. Spring retainer. The lip of the spring retainer fits into the larger coil of the spring.