Measure distance from bottom of brake chamber bracket (8) to top of straight headless pin (9) on clevis (10)
(dimension B). Document measurement.
If difference between two measurements taken is less than 1 inch (2.5 cm) and both slack adjusters (1 and 2) are
still approximately parallel to each other and the ground, brake adjustment is complete. If not, repeat steps 4 thru
12, as required.
After all adjustments have been completed, verify that locking ring (5) on each slack adjuster (1 and 2) is popped
outward to lock adjusting nut (6). Rotate adjusting nut (6) on either slack adjuster (1 or 2) counterclockwise until
each locking ring (5) has positively locked each adjusting nut (6), as required.
Operate and/or drive tractor/semitrailer and check for proper brake operation (para. 2-25).
4-16. PLATFORM STEERING ALINEMENT
This task covers platform steering alinement.
General mechanics tool kit, item 16, appx. B
Adjustable automotive wrench, item 17, appx. B
Personnel Required: 2
Tractor/semitrailer coupled and tractor parking brakes applied (para. 2-24)
PLATFORM STEERING ALINEMENT
Release semitrailer parking brakes by pushing inward on knob of parking brake valve (para. 2-8).