Air Brake Reservoir Filling for GMC Truck TopKick C-Series (Conventional) C6/C7/C8 2007

1. Charge the air system.

Start the engine and allow the air compressor to fill the air system.

2. Remove the wheel blocks.

1. Connect a compressed air line to the inflation valve (1).

•	Ensure that the compressed air is free of moisture.

•	Do not fill the system with more than 861 kPa (125 psi) of air pressure.

2. Disconnect the compressed air line.
3. Remove the wheel blocks.