Hypertherm HyPrecision Predictive P-15 Operator's Manual page 103

5 – Preventive maintenance
3. Pull the seal housing and the high-pressure seal backup off the plunger.
If the rod seal does not come out of the hydraulic end cap with the seal housing, use an
O-ring pick or a similar tool to pry it out. Be careful to not scratch the plunger.
4. Remove the high-pressure seal backup and the O-ring from the seal housing.
5. Install the 10-32 stainless steel screws in the threaded holes in the plunger bearing. Use the screws to pull
the plunger bearing out of the hydraulic end cap.
6. Remove the plunger bearing from the plunger.
HyPrecision Predictive waterjet pump Operator Manual 810120 103