Engine Oil Pressure Switch and Sending Unit (cont)

TM 10-3930-638-24&P

2-31. SENDING UNITS AND SWITCHES MAINTENANCE (cont)

d. Engine Oil Pressure Switch and Sending Unit (cont).

REMARKS

ITEM

ACTION

STEP

LOCATION

REMOVAL

From terminal on switch (6)

Engine compart-

a. Harness connector (1)

Grasp and pull

ment rear, right

Remove

From terminal on sender (5)

b. Nut (2), lock washer

side of vehicle

(3) and wire lead (4)

Turn counterclockwise and pull from

Remove

c. Sender (5) and

switch (6)

tee (7)

Turn counterclockwise and pull from

d. Tee (7) and fitting (8)

Remove

engine block

Push together,

Remove resistor (10)

e. Retainer halves (9)

turn counter-

clockwise and

separate

CLEANING

WARNING

Dry cleaning solvent (P-D-680), used to clean parts is toxic and

flammable. Wear protective goggles and gloves and use only in a

well ventilated area. Avoid contact with skin, eyes, and clothes

and don't breathe vapors. Do not use near open flame or

excessive heat and don't smoke when using it. Failure to do so

could cause serious injury. If you become dizzy while using

cleaning solvent, get fresh air immediately, and get medical

attention. If contact with skin or clothes is made, flush with large

amounts of water. If contact with eyes is made, wash eyes with

water immediately, and obtain medical aid immediately.

WARNING

Wear safety glasses when drying parts with compressed air.

Failure to do so could cause serious injury to eyes and possible

blindness. If you hurt your eyes or if a foreign object is blown into

your eyes. seek medical attention immediately.

Nut (2), lock washer (3),

Clean

Use cleaning solvent P-D-680.

tee (7) and fitting (8)

Dry thoroughly with compressed air

Wire connectors and

Clean

Use cleaning solvent P-D-680 on

switch terminals

connectors and terminals only

INSPECTION

Nut (2), lock washer (3),

Inspect

Replace if worn or cracked, or if threads

tee (7) and fitting (8)

damaged

Harness wires

Inspect

Replace if insulation frayed, or if

conductor broken

2-168 CHANGE 2