HyPrecision 50S/60S/75S Operator Manual 808690 103
5 – Preventive maintenance
Preventive maintenance
1. Remove the high-pressure cylinder and the check valve from the plunger.
2. Remove the check valve by rolling the cylinder and tapping the check valve with a rubber mallet. Tap at an
angle away from the cylinder.
3. Tilt the cylinder so that the low-pressure poppet comes out.
4. Put the cylinder on the seal-locating ring.
5. Put the stepped end of the push tool against the seal and tap on the end of the push tool with a rubber mallet
to push the bottom seal and the hoop out of the high-pressure cylinder.
6. Turn the cylinder over and put it on the locating ring.
Prevent the spacer tube from sliding out when the cylinder is turned over.
7. Put the nonstepped end of the push tool against the spacer tube and tap on the end of the push tool with a
rubber mallet to push the seal and the hoop out of the high-pressure cylinder.
8. Slide the spacer tube out of the cylinder.
9. Disassemble all of the parts.
10. 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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