Water Pump User Manual

Doc No: OMM50000903
Rev: B Page 37 of 65
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A variation of this is the use of a hydraulic pump and cylinder jack (porta power) to
generate the load that the bumper, strong back, and nut would generate. This is shown
if Figure 8. It is useful to put “dry ice” on the seat if it will not loosen. Allow five minutes
for cooling of seat before attempting removal.
CAUTION: Dry ice will cause freeze burns to skin if contacted. Use thick leather gloves
when handling. Dry ice is often available at grocery stores.
Figure 10: Hydraulic Power used to Remove Valve Seat
Tension Rod Hold Down Nut
Hydraulic Ram
(jack)
Strong Back
Hand Pump to Pressurize Hydraulic
Ram
Top of Fluid Cylinder