621H, 623H and 627H Wheel Tractor-Scrapers Engine Supplement Caterpillar


Air Control Valve (ARD Combustion) - Remove and Install - Tractor

Usage:

623H DBF

Removal Procedure




    Illustration 1g02588760

  1. Remove bolts (1) and panel assembly (2) .



    Illustration 2g02588761

  1. Disconnect hose (3), tube assembly (4), hose (7), and harness assembly (8) .

  1. Remove bolts (5) and air control valve (ARD Combustion) (6) .



    Illustration 3g02588836

  1. Remove bolts (13), inlet elbow (12), seals (11), and actuator assembly (10) from outlet elbow (9) .

Installation Procedure

  1. Install air control valve (ARD Combustion) (6) in the reverse order of removal.

    1. Tighten bolts (1) to a torque of 15 ± 3 N·m (133 ± 27 lb in).

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