Cummins HC Alternator HC544C

Check for signs of wear, fretting, or other detrimental features

Inspect for damage to seals, grease leakage, or discoloration of the bearing races

Does the bearing need to be replaced?

Describe any issues found during inspection

Perform PI test for MV/HV windings

Test temperature sensors with alternator running

Record customer settings for temperature sensors

Check all alternator/customer connections and cabling

Test Initial AVR and PFC set up with alternator running

Check customer connection of auxiliaries

Test synchronization with alternator running

Measure air inlet temperature with alternator running

Check air flow rate and direction with alternator running

Check condition of air filter where fitted

Replace air filters where fitted

Inspect the fan for damaged vanes and cracks

Remove air filters from their frames

Turn off the anti-condensation heater (if fitted) and isolate from supply.

Remove the lower air inlet cover.

Remove the terminal box lid and side panel (left hand, viewed from NDE).

Disconnect the grease pipe (if fitted) from the bearing cartridge and the NDE bracket.

Use a 10 mm open spanner to disconnect the RTD sensor for bearing temperature (if fitted) from the bearing.