Disassembly - TM-9-2320-360-20-20282

TM 9-2320-360-20-2

17-29. DDEC II ELECTRONIC CONTROL MODULE (ECM) REPLACEMENT (CONT)

b. Disassembly

(1)

Remove two screws (1) and heat shield (2) from

cooler plate (3).

(2) Remove six screws (4) and cooler plate (3) from

ECM (5).

NOTE

Some engines do not have washers.

If ECM mounting hardware used

washers, discard screws, washers,

and isolators.

New mounting

hardware uses four new screws,

eight new isolators and no washers.

(3)

Remove four screws (6), washers (7), and

isolators (8) from ECM (5). Discard screws,

washers, and isolators.

(4) Remove ECM (5) and four isolators (9) from

ECM bracket (10). Discard isolators.

(5) Remove two screws (11), retainer plate (12),

fitting (13), and two seals (14) from cooler plate

(3). Discard seals.

c. Assembly

(1)

Install two new seals (1), fitting (2), and retainer

plate (3) on cooler plate (4) with two screws (5).

(2)

Install cooler plate (4) on ECM (6) with six

screws (7). Torque to 180 lb-in. (20 N m).

(3) Install heat shield (8) on cooler plate (4) with

two screws (9). Torque to 180 lb-in. (20 Nm).

CAUTION

Old ECM hardware used washers

with screws and old style isolators.

New mounting hardware does not

use washers. The eight isolators and

four screws must be replaced as a

set. Failure to comply may result in

damage to ECM.

(4) Install four new isolators (10) on ECM bracket

(11).

(5) Install ECM (6) on ECM bracket (11) with four

new isolators (12) and new screws (14).

7-82 Change 3