Brake and Air System Maintenance Instructions (Cont)
Tag and mark air lines before removal.
Cut plastic cable ties as necessary to disconnect air lines.
There are two configurations of No. 1 air manifold used. Model A configuration is
used by M977, M978, M984, and M985. Model B is used by M983 and M984E1.
Disconnect air lines (1, 2, 3,
Model A - Some vehicles have two nuts,
lockwashers, and screws. Others have
two flanged nuts, one flanged screw,
one screw, and one flat washer. Flat
washer is between screw and clamp.
Remove two nuts (5),
lockwashers (6), two screws (7),
and clamp (8).
Remove No. 1 air manifold (9).