d. Check the Compressor.
(1) Verify the pressure reaches 80 psi in approximately 40 seconds, and the
compressor shuts itself off.
Verify the pressure decreases to 60 psi in approximately 30 seconds.
During this time, you should hear a hissing sound as purged air is discharged
through the exhaust muffler. This indicates the regeneration system is
(3) Verify the compressor turns itself back on at 60 psi and runs for
approximately eight seconds until the pressure reaches 80 psi.
Ensure the cycle then repeats steps (2) and (3).
e. Check the Color of the Dryness Indicator.
If the color is blue, the compressor is ready for operation.
If the color is not blue, regenerate the system before using the
f. Rotate Transit Case Cover Supports.
(1) Rotate the four transit case cover supports so that they overlap the
edges of the transit case as right angles.
Place the transit case cover on its supports. Refer to figure 2-1.