HyPrecision 50S/60S/75S Operator Manual 808690 105
5 – Preventive maintenance
Preventive maintenance
1. Slide the seal housing removal tool into the groove on the seal housing.
2. Use a hex wrench to turn the screws on the seal housing removal tool.
Alternate sides so that the tool pulls the housing straight out of the hydraulic end cap.
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 a dental 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 2 socket-head cap 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.
7. Clean each part with a lint-free towel and isopropyl alcohol. Examine all parts for deterioration, corrosion, or
damage.
Do not use soap, detergent, or solvents.
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