TB-9-2320-335-13-P

TRUCK, UTILITY: EXPANDED CAPACITY, IAP/ARMOR READY

TECHNICAL BULLETIN; OPERATOR AND FIELD MAINTENANCE AND REPAIR PARTS AND SPECIAL TOOLS LIST (RPSTL) INSTRUCTIONS

MAY 2008

TB-9-2320-335-13-P - Page 184 of 680

TB 9-2320-335-13&P

7-4

7-2.1. SERVICE BRAKE SYSTEM BLEEDING INSTRUCTIONS

(SERIAL NUMBERS 300000 AND ABOVE) (Cont’d)

CAUTION

• Check the master cylinder fluid level frequently during the

bleeding operation and refill the reservoir as necessary.

Do not allow the master cylinder to run out of fluid at any time

or additional air will be drawn into the system.

• After adding silicone brake fluid to master cylinder, let cylinder

sit undisturbed for 30 minutes minimum to ensure all visible as

well as minute air bubbles are gone.

NOTE

• This procedure covers bleeding at one caliper. Repeat bleeding

task for remaining calipers.

• Assistant is required to depress the brake pedal when manually

bleeding brakes while mechanic opens and closes bleeder screw.

1.

Connect short piece of hose (3) to bleeder screw (2) on brake caliper (5) and place other end of hose

in container ¾ full of brake fluid (4).

2.

Have assistant pump brake pedal toward floor and hold it there. Open bleeder screw (2) ¾ turn.

3.

When pedal reaches floor, tighten bleeder screw (2) and have assistant slowly release brake pedal.

4.

Repeat steps 2 and 3 until fluid flows clear and free of air bubbles.

5.

Disconnect hose (3) from bleeder screw (2).

6.

Repeat manual bleeding for opposite side (1) of same caliper (5).

7.

Fill master cylinder reservoir with silicone brake fluid to MAX line.

b. Manual Bleeding

1

2

3

4

5