Air Compressor

Figure 2-1. Vacuum Pump

2-4

TM 5-6640-212-14

(4) Open the intake to the vacuum system.

2-4. Air Compressor

(5) To eliminate water and other condensed

vapors from forming in the pump, open the vented

a. Description. The air compressor (fig. 2-2) is a

exhaust valve by loosening the knurled lockring and

two-cylinder, single-stage, air-cooled compressor

turning the valve stem one full turn counterclockwise;

connected by a V-Belt and pulleys to an electric motor.

then tighten lockring.

The motor and compressor are mounted on a common

(6) To shut down the vacuum pump, close the

base. The base is mounted above the vertical air tank.

pump intake; then place the vacuum pump circuit

The vertical air tank, with the required interconnect and

breaker in the OFF position. Bleed in air through the

supply piping, completes the air compressor utility

intake.

system. The complete setup is located in the left front

corner of the utility compartment.

(7) If the pump is going to be out of service for a

prolonged period, drain the oil and fill with new Duo-Seal

oil or equivalent to prevent the possibility of corrosion.