793C and 793C XQ Off-Highway Truck Air System and Brakes Caterpillar


Air Tank

Usage:

793C 4GZ


Illustration 1g00296875
Primary air tank

The primary air tank is located on the right hand platform that is near the cab. The primary air tank contains pressurized air for control of the following systems and components: the air starting system, the service brakes, the automatic lubrication system, the horn and the retarder.

The primary air tank contains a relief valve. This relief valve cannot be adjusted.



Illustration 2g00908299
Secondary air tank

The secondary air tank is located in the compartment that is located behind the cab. A cover must be removed in order to access the secondary air tank. The secondary air tank contains pressurized air for the secondary braking circuit.



Illustration 3g00672126
Location of the drain valve for the primary air tank


Illustration 4g00405338
Location of the drain valve for the secondary air tank

Each air tank contains a drain valve. The drain valve for the primary air tank is on the primary air tank. The drain for the secondary air tank is on the right side of the cab.

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