Installation-continued - TM-9-2815-224-34-P0272

TM 9-2815-224-34&P

Engine Brake Retarder Maintenance Instructions (Cont)

11-2.

ENGINE BRAKE RETARDER REMOVAL/INSTALLATION (CONT).

Install connector (3) with nut (4) in drone (5).

(2)

Screw connector (3) in about 1/2-in. (13 mm).

(3)

NOTE

Clean engine mounting surface before

positioning supply brakes and drones on

engine.

Position master piston fork assembly (6)

(4)

over injector rocker clevis (7).

Install supply brake (2) and drone (5)

(5)

with four mounting screws (8) through

rocker arm shaft (9) to cylinder

head (10).

Tighten screws (8) to 45 lb-ft (61 Nm).

(6)

Tighten screws (8) to 88 to 92 lb-ft (119

(7)

to 124 Nm).

Move master piston fork assembly (6) up

(8)

and down several times to make sure it

rides freely on injector rocker clevis (7).

Unscrew connector (3) from drone (5)

(9)

until connector covers seal ring (1) and

makes contact with supply brake (2).

CAUTION

Be sure screw is backed out 1/3 turn from

contact point to provide working clearance. If

the screw is allowed to contact adjacent

housing during brake operation, the screw will

break resulting in leakage and loss of engine

braking.

After connector (3) makes contact, back

(10)

off connector 1/3 turn. Hold connector

and tighten nut (4) against drone (5).

11-4

Change 2