Operation CHARM
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Buick
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1991
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Skylark L4-151 2.5L
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Engine
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Engine Lubrication
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Oil Pump
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Specifications
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Mechanical Specifications
Mechanical Specifications
Vin R & U, Gear Values
Gear Pocket Depth
0.514-0.516 Inch (in)
Pump Gear Thickness
0.511-0.512 Inch (in)