VACUUM PUMP - TM-5-6640-213-140137

TM 5-6640-213-14

NOTE

When the batteries reach the end of their useful

life, they should be replaced propmtly. Failure

to do so may result in corrosion at the battery

contacts due to battery leakage.

(3) Observe polarity when replacing the 1.5 volt D cell

and connect as indicated. The D cell is held in place with spring

clips which also act as battery contacts. Polarity for the D cell

is marked adjacent to the battery contact clips. The 9-volt battery

contacts and connector are polarized. To remove the 9 volt battery,

first withdraw battery with mated connector from the compartment.

Then remove the connector.

b. Fuse Replacement. The fuse is mounted in a holder in the ex-

ternally accessible battery and fuse compartment. A spare fuse is

located in a well between the + terminal of the D cell and the side

of the case. Access to the compartment is obtained by loosening the

single captivated screw on the compartment cover. To replace a

burned out fuse, remove it from the holder and replae it only with a

1 ampere, 250 volt, quick/acting type 3AG fuse or equivalent. When

removing the fuse from its holder, first remove the 9-volt battery.

VACUUM PUMP.

Flushing Pump.

Flush the pump as follows:

(1) Remove the inlet (vacuum) regulator valve (fig. 4-2)

and completely close down the outlet (Pressure) regulator valve.

This will shut off the bypass bleed hole in the valve body so that

all vented air must pass thrugh the outlet filter and hose connector.

(2) Wrap the oulet hose connector loosely with a rag or

wiping tissue to retain any droplets of solvert that may emerge.

(3) Start the pump, and with an eyedropper inject two to

three cc of solvent, P-D-680, or derosene into the vacuum regulator

valve, while closing off the vacuum hose connector with a finger of

Drycleaning solvent, P-D-680, used to clean parts

is potentially dangerous to personnel and property.

Avoid repeated and prolonged skin contact. Do not

use near open flame or excessive heat. Flash point

of solvent is 100 degrees F - 138 degrees F (38

degrees C - 59 degrees C).

(4) Continue running the pump until all injected solvent

has passed through on into the outlet filter cup.