WEIGHT AND BALANCE

MWO 5-2330-360-23-1

10. MODIFICATION PROCEDURE FOR M870A1 BRAKE (BENDIX) (Continued).

10.

(3) Manually adjust brakes as follows:

(a) Rotate adjustment hex clockwise until brake linings are snug against the brake drum.

(b) Turn adjustment hex counter-clockwise 1/4-turn. (Approximately 70 pound-feet of effort is required to over-

ride automatic adjusting mechanism.)

(4) Uncage spring brakes (if necessary).

(a) Apply 90 to 95 psi air pressure from towing vehicle air gage. Make and hold full brake application to check

that brake chamber push rod stroke is below the re-adjustment limit of 2 inches.

b Repeat steps 1 0.s.(2).(d). through 1 0.s.(4). as necessary, threading adapter an additional 6-inch each time,

to bring brakes in to proper adjustment,.

Serviceability Testing (Leakage Test).

(1) Test and check brakes for serviceability as follows:

(a) Connect air brake system to towing vehicle (Refer to TM5-2330-378-14&P).

(b) Coat all drain cocks, pipe plugs and air line connections, affected by this modification, with soapsuds.

(d) Tighten all leaking connections as required and perform serviceability testing until no sign of leakage

occurs.

(2) Correct any problems found during above tests, then retest as needed.

q. Reinstall Tires and Remove Jackstands. Refer to TM 5-2330-378-14&P.

r. Update Vehicle Data Plate as described in paragraph 14c.

END OF TASK.

11. CALIBRATION. Not applicable.

12. WEIGHT AND BALANCE. Calculated for one trailer. Data plate is applicable to all trailer with this modification.

13. QUALITY ASSURANCE. QA is assured with final inspection. This MWO defines tests, proven parts, and specific

installation directions to convert an M870 or M870A1.