Long Island 7285,
What does this CCM Over Haul consist of?
The technical name of the M-1 overhaul program was "Component Replacement Program". CCM propulsion equipment retrofit was but one aspect. We in the shops generically call them CCM cars instead of CRP (or CRaP cars for short) cars.
132 M-1 cars received new trucks, new wheels, new or rebuilt traction motors, completely new computer controlled "Main [propulsion] Group", rebuilt and retrofitted "KM" propulsion group, rebuilt and retrofitted "Field Shunt" contactors, Converter/Inverter retrofit replaced Motor Alternator, US&S "Microcab" ATC package retrofit, rebuilt A/C units and new evaporator coil / overhead heat coil assembly, bathroom retrofit, new battery set, new air compressor, new door operator panels, and a host of other smaller rebuilds and modifications.
Perhaps unfortunately, most of the stuff that was done, the rider cannot see what their money paid for. The new seat cushions and whatever windows were replaced, did not look new for long. The modified bathrooms are not an aspect of the program to be proud of, either.
From outside the car, the casual observer should look for the rectangular inverter box on even numbered M-1 cars, where the M/A used to be. Only the
overhauled M-1 cars have this inverter retrofit. As more non-overhauled M-1 cars are sent packing to Mexico, the overhauled cars will become a higher percentage of the M-1 fleet, therefore easier to spot.
[Incidentally, almost all LIRR M-3 cars should also have one of these inverter boxes by now.]
Tom