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Home >> GMC >> 1983 >> Forward Control 7.4 W, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Air Injection System >> Maintenance >> Pump Exhaust Tube Replacement
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Pump Exhaust Tube Replacement

Remove by placing tube in a vise, or use pliers to pull tube with a twisting motion. Insert new tube into hole, and tap in using a block of wood to protect tube. Approximately 7/8" (22 mm) of tube should extend above cover.