4-39. AIR LINES AND FITTINGS REPLACEMENT (Con't).
c. REPLACEMENT OF UNDERCONSTRUCTION AIR LINES AND FITTINGS
Ensure that air lines (4 and 9) and hose assemblies (17) do not rub against
each other or any other surface when installed. Relocate or provide sup-
port, as required. If air lines or hose assemblies rub, a leak may develop,
resulting in brake lockup and possible serious injury or death to personnel.
All male threads of fittings should be coated with antiseize tape if not
already factory-coated with an antiseize compound.
If replacing more than one air line (4 and 9) or hose assembly (17), tag
Release all air from front and rear air reservoirs by pulling air reservoir draincock cable (see
3/8 in. outside diameter EMERGENCY air line
1/2 in. hose assemblies
1/2 In. outside diameter SERVICE air line
90 degree elbow
Relay quick release valve
Replace any leaking or damaged air lines (4 and 9), hose assemblies (17), grommets (5 and
8), elbows (11), plugs (21), and tees (20). To remove a damaged grommet, air line (4 or 9)
must first be removed.