TUBE AS 3800563 - Caterpillar

Illustration 1 g00296875
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 2 g00908299
(S/N: 1HW1-Up)
(S/N: 2PZ1-105)
(S/N: 5AZ1-399)
(S/N: APX1-450)
Secondary air tank
Illustration 3 g01070417
(S/N: 2PZ106-Up)
(S/N: 5AZ400-Up)
(S/N: APX451-Up)
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 4 g00672126
Location of the drain valve for the primary air tank
Illustration 5 g00405338
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.