Lubrication system Troubleshooting: Causes & Fixes

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Problems on this page:

No or low lubricant delivery Over-lubrication Blocked line / high-pressure fault

No or low lubricant delivery

Hits OEE: Availability

Symptoms: Dry points, low-level/fault alarms, bearings running hot.

Empty reservoir

Refill with the correct grease/oil; check refill schedule.

Blocked line or injector

Find the blocked feed; clear or replace the injector/metering unit.

Pump or control fault

Check the lube pump, timer and pressure switch.

Prevention: Reservoir checks, line/injector inspection, monitor cycle/pressure.

Over-lubrication

Hits OEE: Quality

Symptoms: Grease purging from seals, contamination, bearings running hot.

Timer/volume set too high

Recalculate grease quantity and interval per point.

Wrong injector size

Fit correctly sized metering injectors.

Manual top-up on top of auto-lube

Stop double-lubricating; rely on the system.

Prevention: Calculated lubrication, correct injectors, one method per point.

Blocked line / high-pressure fault

Hits OEE: Availability

Symptoms: System faults on high pressure; some points stay dry.

Blocked feed line or injector

Find and clear the blockage; replace the injector.

Hardened or incompatible grease

Use the specified grease; flush old product.

Crimped or damaged tube

Replace the line; reroute to avoid pinching.

Prevention: Correct grease, line protection, periodic flow checks.

Lubrication system troubleshooting FAQ

Lubrication system: what causes no or low lubricant delivery, and how do I fix it?

Symptoms: Dry points, low-level/fault alarms, bearings running hot. Likely causes: Empty reservoir; Blocked line or injector; Pump or control fault. Fixes: Refill with the correct grease/oil; check refill schedule. Find the blocked feed; clear or replace the injector/metering unit. Check the lube pump, timer and pressure switch. Prevention: Reservoir checks, line/injector inspection, monitor cycle/pressure.

Lubrication system: what causes over-lubrication, and how do I fix it?

Symptoms: Grease purging from seals, contamination, bearings running hot. Likely causes: Timer/volume set too high; Wrong injector size; Manual top-up on top of auto-lube. Fixes: Recalculate grease quantity and interval per point. Fit correctly sized metering injectors. Stop double-lubricating; rely on the system. Prevention: Calculated lubrication, correct injectors, one method per point.

Lubrication system: what causes blocked line / high-pressure fault, and how do I fix it?

Symptoms: System faults on high pressure; some points stay dry. Likely causes: Blocked feed line or injector; Hardened or incompatible grease; Crimped or damaged tube. Fixes: Find and clear the blockage; replace the injector. Use the specified grease; flush old product. Replace the line; reroute to avoid pinching. Prevention: Correct grease, line protection, periodic flow checks.

Guidance only. Always follow lockout/tagout and your site's safe-work procedures, and verify against OEM manuals before acting.

Stop the same fault coming back

Recurring lubrication system stops usually trace to a cause you cannot see by hand. The partner we recommend is Fabrico: EU-built, so your production data stays in EU jurisdiction, with computer-vision true-cause of micro-stops, a closed loop from PLC-read OEE to an auto-routed work order, and ISO 27001 / 20000-1 / 9001 (supports audit-readiness).

See how Fabrico finds root cause

The directory stays free.

Methods that cut recurring stops: the six big losses · root cause analysis · preventive vs predictive maintenance · TPM · SMED & changeover