621G and 627G Wheel Tractor-Scrapers Machine Systems Caterpillar


Air Tank - Remove and Install

Usage:

621G ANG

Removal Procedure

Start By:

  1. Remove the brake relay valve. Refer to Disassembly and Assembly, "Relay Valve (Brake) - Remove and Install". The information is in this manual.



    Illustration 1g00795998

  1. Remove two bolts (1) from valve (2). Remove valve (2) from the cover. Lay the valve aside.



    Illustration 2g00795999

  1. Disconnect electrical connector (3) from pressure sensor group (4) .

  1. Remove bolt (5) and remove the clip.

  1. Remove sensor (6) and remove pressure sensor (4) .



    Illustration 3g00796001

  1. Disconnect electrical connector (7) for solenoid valve (8) .



    Illustration 4g00796002

  1. Remove two screws (9) and remove solenoid valve (8) from the cover.



    Illustration 5g00796003

  1. Disconnect hose assembly (10) from the rear of the air tank.

  1. Disconnect hose assembly (11) from the front of the air tank.

  1. Remove three bolts (12) from the cover.



    Illustration 6g00796006

  1. Remove three bolts (13) from the bottom of cover (14) .

  1. Use two people in order to remove the air tank and the cover. The air tank and the cover weigh 34 kg (75 lb).

    Note: The air tank is not fastened to the cover. The air tank may separate from the cover during removal of the air tank and removal of the cover.

Installation Procedure




    Illustration 7g00796006

  1. Use two people in order to install the cover and the air tank. The cover and the air tank weigh 34 kg (75 lb).

  1. Install three bolts (13) to cover (14) .



    Illustration 8g00796003

  1. Install three bolts (12) .

  1. Connect hose assembly (11) to the front of the air tank.

  1. Connect hose assembly (10) to the rear of the air tank.



    Illustration 9g00796002

  1. Install solenoid valve (8) and install two screws (9) .



    Illustration 10g00796001

  1. Connect electrical connector (7) for solenoid valve (8) .



    Illustration 11g00795999

  1. Install sensor (6) into the adapter on the air tank.

  1. Install pressure sensor group (4) and install the clip. Install bolt (5) .

  1. Connect electrical connector (3) .



    Illustration 12g00795998

  1. Install valve (2) to the cover.

  1. Install two bolts (1) in order to secure the valve.

End By: Install the brake relay valve. Refer to Disassembly and Assembly, "Relay Valve (Brake) - Remove and Install" in this manual.

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