TM 10--3510--221--24
0026 00--2
DRUM BRAKING SLOW -- Continued
0026 00
8. Check brake rotor for wear or damage (WP 0111 00).
Is brake rotor worn or damaged?
YES Replace brake rotor (WP 0261 00).
NO Go to step 9.
9. Position SW1 then SW2 to ON.
10. Use maintenance menu to apply brake (WP 0010 00). With brake applied determine if brake pads are
contacting brake rotor.
Are brake pads contacting brake rotor?
YES Go to step 16.
NO Check adjustment of brake thruster (WP 0121 00).
11. Open door on main control enclosure. Verify SW1 and SW2 are ON.
12. Using maintenance menu attempt to apply brake while monitoring LED on solenoid valve SV113.
Does LED come on?
YES Go to step 13.
NO Go to TYPICAL DC OUTPUT SIGNAL FAULT (WP 0106 00) to check operation of SV113.
13. Push in manual operator on SV113 while observing operation of brake caliper.
Does brake caliper extend?
YES Replace solenoid valve SV113 (WP 0209 00).
NO Go to step 14.
14. Disconnect air tube from brake thruster.
15. Push in manual operator on SV113. Check for air pressure at tube disconnected from brake thruster.
Does air pressure vent from tube?
YES Reconnect tube. Go to step 16.
NO Replace solenoid valve SV113 (WP 0209 00).
16. Disconnect brake thruster from brake caliper.
17. Attempt to manually engage and disengage brake caliper.
Does brake caliper operate freely?
YES Replace brake thruster (WP 0121 00).
NO Replace brake caliper (WP 0122 00).
END OF WORK PACKAGE
