12-9. AXLES NO. 1 AND 2 AIR CHAMBER REPLACEMENT (CONT).
Tag and mark air lines prior to removal.
Refer to Table 12-1 for air line numbers.
Axle No. 1 and 2 air chambers are removed the same way. Axle No. 1 shown.
Remove two air lines (1) from tee fitting (2).
Remove air line (3) from elbow (4).
Perform Step (c) only if elbow and tee are damaged or new air chamber is being
Remove tee (2) and elbow (4) from air chamber (5).
Ensure brake drum is not pulled back more than approximately two inches (5 cm).
Failure to comply may result in injury or death to personnel.
Pull brake drum (6) back approximately two inches (5 cm).
Using spanner wrench, loosen collet nut (7).
Remove air chamber (5) from brake assembly (8).
Remove wedge assembly (9) from brake assembly (8).