AIR COMPRESSOR ASSEMBLY (cont)
Components of this locomotive are heavy and may be awkward to handle. Use
correct lifting procedures, indicated lifting devices, and/or assistance from other
personnel to avoid injury.
Use a suitable lifting device and slowly lift air compressor (6) on locomotive deck.
Position two bars (5) and install four lockwashers (4) and bolts (3).
Use antiseize tap and connect flex pipe (2). Connect unloader air line fitting (1).
Refer to TM 55-2210-224-12 and install and adjust belts.
Refer to LO 55-2210-224-12 and fill air compressor with oil.
Refer to paragraph 4-8 and test and inspect air compressor.
Connect an orifice holder with 1/4-inch (6. 4 mm) orifice in the plugged hole at the bottom of No. 1 air reservoir.
Use orifice with square edges bored through plate 1/16 inch (1.6 mm) thick.
Connect a calibrated test gage in reservoir No. 2. Disconnect electrical leads to automatic drain valves at timer
in high-voltage cabinet. Check that all air-operated devices on locomotive are shut off.
Start engine No. 1 and idle until engine and compressor are warm. Place throttle lever in position No. 3.
Operate engine in throttle position No. 3 until air pressure in reservoir No. 2 is stabilized.
Record reading from test gage in reservoir No. 2.
Place throttle lever in idle position and let engines idle for a minimum of 2 minutes. Shut down engine. Drain air
reservoir No. 2 to 50 psi (345 kPa).
Start No. 2 engine and idle until engine and compressor are warm. Repeat steps 14 thru 16 and test
compressor No. 2.
Compare readings with table 3-4. Readings must be above condemning limits after compensating for altitudes.
Drain air from reservoirs. Remove orifice and test gage. Install plugs.