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Hewitt Emergency Services Daily Maintenance Check

Hewitt Emergency Services Daily Maintenance Check

Inspect key fluids and equipment condition before use.
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    Step 1: Governor Cut-In and Cut-Out Pressures — Start the engine, check that the compressor cuts off at about 120 psi, then pump the brakes until pressure drops below 100 psi to confirm the compressor cuts back on.
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    Step 2: Air Pressure Leakage Test — With the engine off and brakes released, monitor the gauges for one minute. The pressure should not drop more than 3 psi.
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    Step 3: Brake Pedal Pressure Test — Press and hold the brake pedal. The pressure should not drop more than 4 psi in one minute while the brakes are applied.
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    Step 4: Warning Buzzer Check — Make sure the warning buzzer sounds at or before 60 psi.
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    Step 5: Emergency and Service Brake Valve Check — Continue pumping the brakes until pressure drops to 20–40 psi and verify the emergency and service brake valves pop out.
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    Step 6: Air Pressure Rebuild Rate — Hold the accelerator at 1500 RPM and verify pressure rebuilds from 85 psi to 100 psi within 45 seconds.
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    Step 7: Tug Tests — Perform tug tests against the parking brake, emergency brake, and hand brake, then test the service brake by accelerating to 5 mph and pressing the brake pedal to check whether the vehicle pulls to one side.
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    Describe any issues here
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    • No Issues
    • Needs Minor Maintenance
    • Needs Repair Before Use
    • Out of Service
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