Lite-Check 137 Operation Manual

TRACTOR OPERATION
ELECTRICAL OPERATION – RP 137C ABS supply, RP 141 trailer ABS power required,
RP 144 cab ABS lamp
✓ Auxiliary circuit has 5-amp load, brake circuit has 5-amp load, running lights
have a 5 -amp for a total of 15-amps with all circuits
1. Set tester switch to tractor.
2. Turn on ignition (battery output if engine is not running, alternator output with engine).
3. With 5-amp load, tester shows voltage available on ABS auxiliary line.
4. Trailer ABS lamp in cab will cycle indicating circuit is working.
5. Depress brake pedal to activate circuit with 5-amp load to show available voltage.
6. Turn on running lights and turn signals one at time to show available voltage.
AIR OPERATION – RP 619B, Air System Inspection
7. Release trailer parking brakes- observe air gauge with compressor operating.
8. Press brake pedal to apply service brakes – observe air gauge for pressure.
9. Turn off engine with ignition switch on and trailer parking brake applied.
10. Press brake pedal repeatedly to test low air warning system and observe pressure.
MODEL 137 OUTPUT TESTER
OPERATION MANUAL
– Connect 7-w cable and 2 airlines