4-39. AIR LINES AND FITTINGS REPLACEMENT.
THIS TASK COVERS
Replacement of Front Air Lines and Fit-
Replacement of Underconstruction Air
Lines and Fittings
Replacement of Brake Interlock Assem-
bly Air Lines
2-14 Tractor EMERGENCY and SERVICE air
General Safety Instructions;
Ensure that air lines do not rub against
each other or any other surface when in-
* Tool kit, general mechanic's
a. REPLACEMENT OF FRONT AIR LINES AND FITTINGS
Ensure that air lines (4 and 9) do not rub against each other or any other
surface when installed. Relocate or provide support, as required. If air lines
rub, a leak may develop, resulting in brake lockup and possible serious In-
jury or death to personnel.
All male threads of fittings should be coated with antiseize tape if not al-
ready factory-coated with an antiseize compound.
To replace a leaking or damaged air coupling (6 or 7), refer to paragraph 4-38.
Replace any leaking or damaged air lines (4 and 9), elbows (11), or terminal bolts (1).
Replace any damaged grommets (5 and 8). To remove a grommet, air line (4 or 9) must first