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 559 of 985

Cooling System Maintenance Instructions (Cont)

TM 9-2320-279-20-1

a. Removal.

NOTE

Tag and mark oil lines before

disconnecting.

(1)

(2)

(3)

(4)

Disconnect oil lines (1 and 2) from

fittings (3).

Disconnect air line (4) from fitting (5).

Remove adjusting screw (6).

Support fan clutch (7) and pull fan

clutch away from bracket (8) as four

screws (9) are loosened.

NOTE

Bottom screws cannot be removed from

fan clutch.

(5)

(6)

(7)

Remove two top mounting screws (9)

and spacers (10).

Remove fan clutch (7).

Remove fittings (3 and 5) from fan

clutch (7).

b. Installation.

WARNIN G

Adhesives, solvents, and sealing compounds can burn easily, can give off harmful

vapors, and are harmful to skin and clothing. To 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.

(1)

Coat pipe threads of fittings (3 and 5) with pipe thread sealing compound and install in fan

clutch (7).

(2)

Install fan clutch (7) on bracket (8) with lower two screws (9) and lockwashers (11). Do not

tighten screws.

(3)

Install top two mounting screws (9) and spacers (10). Do not tighten screws.

(4)

Connect oil lines (1 and 2) to lower fittings in fan clutch (7).

(5)

Connect air line (4) to upper fitting in fan clutch (7).

(6)

Install adjusting screw (6).

c. Follow on Maintenance.

(1)

Install fan belts (para 6-17).

(2)

Adjust fan belts (para 6-16).

(3)

Install fan (para 6-11).

END OF TASK

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