HyPrecision 50S/60S/75S Operator Manual 808690 117
5 – Preventive maintenance
Preventive maintenance
Install the high-pressure hoops, the high-pressure water seals, the high-pressure cylinders, and the
check valves
Do not put grease or lubricant on the check valve face or in the cylinder bore. These are designed
for dry contact.
Install a new plunger bearing when replacing the high-pressure cylinder.
Service Interval
Repair the check valves and the low-pressure poppets
(page 107)
After every 500 hours of operation
Repair the high-pressure cylinders (page 109)
Replace the check valve O-rings
Replace the high-pressure hoops
Replace the high-pressure water seals
Replace the low-pressure poppets After every 1,000 hours of operation
Replace the check valves
After every 2,000 hours of operation
Replace the low-pressure poppet baskets
Replace the high-pressure cylinders
After every 3,000 hours of operation or if the cylinder is
chipped or cracked
Replace the spacer tubes After every 12,000 hours of operation
1 Check valve
2 High-pressure hoops
3 High-pressure water seals
4 Low-pressure poppet
5 Low-pressure poppet basket
6 Spacer tube
7 High-pressure cylinder
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