69D and 769D Off-Highway Truck and 771D Quarry Truck Air System and Brakes Caterpillar


Air Dryer (Brake System)

Usage:

769D 5SS



Illustration 1g00531500

(1) Air dryer

(2) Air dryer relief valve

Air dryer (1) is located behind the right front suspension cylinder.

Air flows from the air compressor to the air dryer. The air dryer removes the moisture from the system. Air dryer relief valve (2) is located on the air dryer. Air dryer relief valve (2) protects the air system from damage. Air dryer relief valve (2) will open at 1206 kPa (175 psi). Air dryer relief valve (2) cannot be adjusted.

Reference: For more information about the air dryer, see Service Manual, SENR7474, "Air Dryer for Vehicle Air Systems".

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