Cherokee 4WD L6-4.0L VIN S (1998)
specification is 0.41 to 0.79 millimeter (0.016 to 0.031 inch). If the air gap is not consistent around the circumference of the clutch, lightly pry up
at the minimum variations. Lightly tap down at the points of maximum variation.
NOTE: The air gap is determined by the spacer shims. When installing an original, or a new clutch assembly, try the original shims first. When
installing a new clutch onto a compressor that previously did not have a clutch, use 1.0, 0.50, and 0.13 millimeter (0.040, 0.020, and 0.005 inch)
shims from the clutch hardware package that is provided with the new clutch.
9. Reverse the remaining removal procedures to complete the installation.
Clutch Break-In
After a new compressor clutch has been installed, cycle the compressor clutch approximately twenty times (five seconds on, then five seconds
off). During this procedure, set the heater-A/C control to the Recirculation Mode, the blower motor switch in the highest speed position, and the
engine speed at 1500 to 2000 rpm. This procedure (burnishing) will seat the opposing friction surfaces and provide a higher compressor clutch
torque capability.
