Acer Wood Runner, Manual

Page: 49 / 94

49
Locknut and Pad Locations Loosen the locknut on brake chamber

Loosen the locknut on the brake chamber and unscrew the brake chamber by turning it counter-clockwise.
The chamber should unscrew easily if the chamber spring is properly compressed. CAUTION! If it is difficult
to turn, stop and check that the chamber spring has been properly caged.

When reinstalling the chamber screw the chamber clockwise until it bottoms out lightly (the brake pad is
now forced against the Runway rail) and then back it off 1 to 1 1/2 turns (counterclockwise) to provide
running clearance and allow access the storage area for the release tool. Tighten the locknut and reinstall
the airline.

Remove the release tool and replace in in its storage area.

Test the brake function as shown in the Safety section of this manual.
8.11 BRAKE PAD REPLACEMENT
To Replace the Brake Pad Material:
Follow the same steps listed above for caging the brake chamber spring but do not remove the chamber.

Disconnect drive belt from the gantry.

Lift the Gantry vertically off the runway (about 6 inches) until you can remove the brake plunger.

Remove the socket head screw and replace brake pad material.

Reinstall the plunger.

Remove the airline from the Brake Chamber,

Loosen the Brake Chamber locknut an turn the Brake Chamber several turns counterclockwise to provide
more clearance for the new pad.

Lower the Gantry onto the rail.

Rotate the Brake Chamber clockwise until you feel the brake pad contact the Runway. Back it off ½-3/4 turn
for clearance and relock the locknut.

Remove release tool and replace in the storage area.
Locknut
Brake Pad
Material