Governor Malfunction; Governor Control Line; Compressor Unloader Leakage - BENDIX BA-922 COMPRESSOR Manual

Test 4: Governor Malfunction
1. Inspect control lines to and from the governor
for restrictions (e.g. collapsed or kinked).
Repair as necessary.
2. Using a calibrated external gauge in the
Test 5: Governor Control Line
1. Ensure that the governor control line from the
reservoir is located at or near the top of the
reservoir. (This line, if located near the bottom of
the reservoir, can become blocked or restricted
by the reservoir contents e.g. water or ice.)
Test 6: Compressor Unloader Leakage
Bendix Compressors: Park vehicle, chock
®
wheels, and follow all standard safety procedures.
Remove the governor and install a fitting to the
unloader port. Add a section of air hose (min
1 ft long for a 1/2" diameter line) and a gauge
to the fitting followed by a shut-off valve and an
air source (shop air or small air tank). Open the
Tests (continued)
3. If the governor is malfunctioning, replace it.
2. Perform proper reservoir drain intervals and air
3. Return the vehicle to service.
shut off and charge the unloader port by allowing
air pressure to enter the hose and unload the
compressor. Shut off the air supply and observe
the gauge. A steady reading indicates no leakage
at the unloader port, but a falling reading shows
that the unloader mechanism is leaking and needs
to be serviced.
supply reservoir, service reservoir, or reservoir
port of the D-2 governor, verify cut-in and
™
cut-out pressures are within vehicle OEM
specification.
dryer cartridge maintenance per Maintenance
Schedule and Usage Guidelines (Table A on
page 13).
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