MODIFICATION PROCEDURES-continued

MWO 9-2330-392-20-1

4. Remove damper (9). Check for leaking and corrosion on rod. (figure 2)

Save damper (9) and front damper pin (8) for re-use. Replace damper if leaking

or corrosion can't be removed. Discard rollers (10) and inner slide (11). (figure

5. Remove four brake master cylinder mounting bolts (12) holding master cylinder

(13) to housing (14) (figure 2). Do NOT disconnect hydraulic hose. Discard

removed four master cylinder mounting bolts.

6. Remove master cylinder (13) from housing (14). (figure 3) Tie out of the way so

master cylinder does not hang by the hydraulic hose. Do NOT disconnect

hydraulic hose or in any way open the brake hydraulic system.

WARNING

MWO 9-2330-392-35-1, STEEL DRAW BAR must be installed prior to installing

new Surge Brake Actuator. Failure to follow this warning will result in catastrophic

failure of the aluminum drawbar leading to equipment damage and possible injury or

death of personnel.

7. Pull out the emergency brake actuation hardware from the housing --the lever

(15), cable (16) and metal "U" clip (17) and save for re-use. Note that the metal

"U" clip may be stuck to the master cylinder assembly. Remove three locknuts

(18), three washers (19), three capscrews (21) and three spacers (22) securing

hydraulic actuator housing (14) to trailer. NOTE: If MWO 9-2330-392-35-1 has

been applied, vehicle will not have spacers (22). Retain the safety chains (23) for

re-use. (figure 4) Discard bolts, nuts and washers. Remove housing from

drawbar.