4-41. AIR COMPRESSOR BELTS (cont)
INSTALLATION AND ADJUSTMENT
Check alinement after installing belts and adjusting belt tension.
If one belt is damaged, all belts should be replaced as a matched set so tension
adjustment will be equal.
Install three drive belts (4) on pulleys.
The need for correct adjustment of drive belts cannot be overemphasized.
Adjust belt adjusting nut (3) until slack in upper portion of belt is 3/4 inch (19 mm) at midpoint between pulleys.
Tighten locknut (2).
Tighten four mounting bolts (1).
If new belts were installed, start locomotive (para 2-10 and 2-11) and operate engine for at least 15 minutes to
allow belts to stretch.
Shut down engine (para 2-17)
Readjust belt tension as required.