Cummins HC Alternator HC444D

Check for signs of wear or damage

Inspect for seal damage or grease issues

Does the bearing need replacement?

Describe any issues found during inspection

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

Identify components for each bearing

Is the new grease uncontaminated and of uniform whitish-beige colour?

Clean the grease gun nozzle and grease nipple

Fit the grease gun to the grease nipple and add the correct quantity of grease

Follow the Remove Non-Drive End section to access NDE bearing

Is the DE bearing to be replaced?

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)

Perform PI test for MV/HV windings

Test temperature sensors with alternator running

Record customer settings for temperature sensors