Hypertherm HyPrecision Predictive P-15 Operator's Manual page 111

5 – Preventive maintenance
3. Put the seal housing O-ring backup and the seal housing O-ring on the seal housing. Put the O-ring on the
side nearer the narrow end of the seal housing.

The seal housing O-ring backup has a flat side and a concave side. Make sure the flat side of the O-ring
backup faces the wide end of the seal housing. The O-ring fits into the concave groove on the O-ring
backup.
4. Put the plunger bearing on the plunger. Push the plunger bearing into the hydraulic end cap.
5. Put a small quantity of clean hydraulic fluid on the inner and the outer surfaces of the rod seal.
6. Put the rod seal onto the plunger with the wider side toward the hydraulic end cap.

Do not push the rod seal into the hydraulic end cap.
7. Put hydraulic fluid in the narrow end of the seal housing.
8. Put the seal housing on the plunger with the narrow end toward the hydraulic end cap.
9. Push the rod seal into the seal housing.
10. Turn the seal housing so that the weep hole faces down.
HyPrecision Predictive waterjet pump Operator Manual 810120
1 1-11680-035 O-ring backup, -035
2
1-11679-011 Seal housing O-ring, -011
1
1
2
2
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