CAT Maintenance Guide
Pump and System Preventive
Maintenance Guidelines
Check Daily Weekly 50 Hrs. 1500 Hrs. 3000 Hrs.
Filters
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Oil Level/Quality
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Water Leaks
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Oil Leaks
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Plumbing
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Belts, Pulley
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Accessories
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Seals
Valves
Contact Cat Pumps for more information.
1681 94th Lane N.E., Mpls, MN 55449-4324 P: 763.780.5440 F: 763.780.2958 E: techsupport@catpumps.com
993419 Rev B 5/15
Many application factors determine proper pump maintenance intervals. Variation in duty cycle, operating
performance, uid temperature, uid type, inlet conditions and application environment can aect maintenance
schedules. Every application should be evaluated and serviced based on its own requirements. The following
checklist is intended as a reference guide only.
Water leaks or loss of system performance can be an indicator of seal wear. Seal wear has many causes, including contaminated
liquid or high-temperature/run dry operation. If the low-pressure seals show wear, the high-pressure seals most likely are in a
similar condition. It is a good practice to replace both low and high pressure seals and inspect plungers when leaks are present.
Cat Pumps recommends using our custom-blend premium grade hydraulic oil formulated to meet Cat Pumps specications.
For best results, perform an initial oil change after the rst 50 hours of operation and every 500 hours thereafter. If other oil is
used, oil change should be performed every 300 hours of operation.
Every system operates under dierent conditions. Past performance and maintenance history are the best indicators of future
performance. If system performance degrades or changes, check seals and valves immediately. Service as required to
restore system performance. Depending upon operating conditions, maintenance intervals for seals kits
range between 1,500 and 8,000 hours.
Pump valves typically require changing every other seal change. Depending upon operating conditions, maintenance
intervals for valve kits range between 3,000 and 16,000 hours.
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