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Fault finding

Main compressor thermal overload

Air compressor · Knorr-Bremse

RailwayMedium difficulty

Symptoms

Repeated thermal trips, long charging times, oil in the air reservoir.

Probable causes

  • Worn valves
  • Worn piston rings (oil carry-over)
  • Saturated dryer
  • Inefficient cooling fan

Solution

Overhaul valve assemblies and rings, replace the dryer cartridge, and check cooling and thermal protections.

The information on this page is general guidance. It does not replace the manufacturer’s manual or the work of a qualified technician: before any intervention, always check procedures, tightening torques and safety requirements in the official documentation of the machine.

Field experiences

No experience has been published for this fault yet. If you have dealt with it, tell us how you solved it: photos and drawings help whoever faces the same situation.

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