TM-9-2320-272-24-1

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4

JUNE 1998

TM-9-2320-272-24-1 - Page 553 of 1015

3-64. FAN

TM 9-2320-272-24-1

3.

Remove two screws (27) from fan clutch (29).

4.

Coat screw (27) threads with antiseize compound and install screws (27) on fan mounting bracket (26).

5.

Install top half of shroud (2) on radiator (17) with five screws (4), six washers (3), and two new

locknuts (16). Finger tighten screws (4).

6.

Secure halves of shroud (2) and (8) with eight washers (6), four screws (7), and new locknuts (6).

7.

Tighten five screws (4) and two locknuts (16).

8.

Install two new sets of isolators (12) in brackets (18) and (23).

9.

Install spacer (19) and bracket (23) on bracket (18) and radiator (17) with two screws (13), washers (14),

snubbing washers (26), and new locknuts (24). Finger tighten locknuts (24).

10.

Install two new lockwashers (20) and screws (21) on bracket (23) and radiator (17). Tighten screws (21)

40 lb-ft (55 N•m). Bend tabs on lockwashers (20) against flats of screws (21).

11.

Tighten locknuts (24) 35 lb-ft (50 N•m).

2.

Align fan blade (32) with fan clutch holes (34) and install six washers (31) and nuts (30). Tighten

nuts (30) 36 lb-ft (47 N•m).

FOLLOW-ON TASK: Start engine (TM 9-2320-272-10) and run until fan clutch locks up. Check fan for

alignment.

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