TM-9-2320-279-20-1

M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; ORGANIZATIONAL MAINTENANCE, VOLUME 1 OF 3

TM-9-2320-279-20-1 - Page 477 of 985

TM 9-2320-279-20-1

Fuel System Maintenance Instructions (Cont)

WARNING

Adhesives, solvents, and sealing

compounds can burn easily, can give off

harmful vapors, and are harmful to skin

and clothing. lb avoid injury or death,

keep away from open fire and use in

well-ventilated area. If adhesive, solvent,

or sealing compound gets on skin or

clothing, wash immediately with soap and

water.

NOTE

There are two types of air vents.

Model A has a removable hose

fitting and a 12 in. (304.8 mm) long

air vent line. Model B uses a 24 in.

(609.9 mm) long air vent line and

does not have a removable hose

fitting. Both models are installed the

same way.

Do step (4.1) for Model A only.

(4.1)

Install fitting (9.1) into air vent (10).

(5)

Coat air vent (10) and two elbows (11,

and 12) with pipe thread sealing

compound and install elbows in fuel

tank (13).

(6)

Coat check valve (14) with pipe thread

sealing compound and install on

elbow (11).

(7)

Coat drainplug (15) with pipe thread

sealing compound and install plug in

fuel tank (13).

NOTE

Some models of fuel tanks contain a socket

head pipe plug. Perform step (7.1) for these

models.

(7.1)

Coat socket head pipe plug (15.1) with

pipe thread sealing compound and

install plug in fuel tank (13).

Change 3

4-28.1/(4-28.2 blank)