b.Tighten setscrew (6), then install pressure plate (5), holding plate (3) and air tube (4), and screws (2). Torquescrews to 4,400 in.-lbs.c.Install the air hose (1) in the drum shaft.4-9.5.3 Replacing Friction Discs. Friction discs should be replaced when the maximum clearance, 1/2 inch, has beenreached (see step e.).NOTEThe replacement of the friction discs does not require that the clutch assembly be removedfrom shaft.a.Remove screws (20, figure 4-26) and withdraw driving ring (21) over the air tube holding plate (3, figure 4-27).b.Remove the split friction discs (7) from the clutch assembly.c.Place new friction discs (7), in halves, in clutch assembly.NOTEIf new friction discs have been supplied as a continuous circle, they should be diametricallycut with a hacksaw. Before sawing, mark each side of saw cut so that relative mating facesare correctly positioned in clutch.d.Replace driving ring (21, figure 4-26) and install screws (20).e.Check clearance by applying and releasing air pressure to clutch, and measuring the total axial movement ofpressure plate (5, figure 4-27). Clearance should be 3/32 to 1/8 inch.4-9.5.4 Replacing Air Tube.a.Refer to paragraph 4-9.4.1 and perform steps a. through i.b.Disconnect air hose (1, figure 4-27) from drum shaft. Hold release valve (8) securely and remove air hose (1)from valve.c.Unscrew valve (8) from air tube fitting.d.Remove screws (2), holding plate (3) and air tube (4).e.Install a new air tube (4) in holding plate (3). Install plate and screws (2). Torque screws to 4,400 in.-lbs.f.Install release valve (8) and air hose (1). Install air hose in drum shaft.g.Refer to paragraph 4-9.4.2 and perform steps e. and g. through I., as applicable.4-124
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
