Operation CHARM
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Mazda Truck
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1992
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Navajo 2WD V6-4.0L OHV
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Repair and Diagnosis
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Brakes and Traction Control
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Power Brake Assist
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Testing and Inspection
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Load Test
Load Test
1.
Connect a vacuum gauge to engine.
2.
Start engine and depress pedal with a force of 44 lb.
3.
When vacuum reading is 19.7 in.Hg., stop engine. Observe vacuum gauge for 15 seconds, if gauge shows 18.7-19.7 in.Hg., the unit is operating.