14 - TROUBLESHOOTING 424
Problem Cause Corrective action
6. Temperature too high • The pump is working at a higher pressure than
permitted
• Faulty or worn pump which causes an internal
blow-by
• Excessive blow-by through valves and cylinder
• Oil too viscous
• Continuous overloaded operation
• Temperature too high in the room where the
pump unit is placed
• Check
• Check
• Check
• Check
• Check
• Check
7. Leaks from the seals • Possible abrasive substances have entered
into the oil circulation, damaging the pump’s
shaft
• Seals are faulty, broken or mounted in a wrong
way
• Too hot oil
• Check
• Check
• Check
8. Pump overcharging the motor • Too viscous oil
• Obstructed delivery line or excessive resist-
ance
• Check
• Check
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