Magnum Venus Plastech HIS Troubleshooting Manual - Manual (Page 21)

Page 19
H.I.S. Troubleshooting Manual
3. Insert Clam Shell sections into the hole around the piston rod at the bottom of the
oil well in the center casting, one half of the shell on either side of the piston rod.
A. On HIS 11:1, 10:1, 7:1, 5:1 or 4:1 pumps by slowly applying air to the
power head, the slave arm will move downward, pushing the clam shell
down which in turn will move the packing down and out of the center
casting.
4. Clam shells can/will be removed with packing set out of bottom of pump.
CHAPTER 7:
Resin Pump Trouble Shooting:
Problem Cause Action
Worn Spool
Remove nuts from tie rods
on center section and
withdraw tie rods. Raise
cylinder head above
cylinder and with proper
wrench, remove piston
keeper from power head
piston rod. Lift cylinder
head assembly from the
unit. Remove snap ring
from bushing on under-side
of cylinder head. Remove
the two detent trip spring
retainers, detent trip springs
and balls. Remove cylinder
head cap. Pull valve spool
assembly and bushing out
of lower side of the cylinder
head. Examine valve spool
O-rings and replace any
worn or damaged parts.
Push bronze valve sleeve
down and out through lower
side of cylinder head. Care
must be exercised not to
scratch or nick polished
bronze valve sleeve.
Examine O-rings now