6.4 belt slipping on the ac compressor

[jbarnett31]

has anyone ran into the belt slipping on the ac compressor pulley, and how big of a pain is the compressor to change, i've replaced the belt and tensioner so im to the last resort the compressor.

[Keith Browning]

What exactly do you mean by "slipping?" Is the FEAD belt coming off the pulleys or is the compressor pulley locking up? We seem to have seen a run of concerns related to the A/C compressor over the last few model years affecting the 6.0L and the 4.5L in LCF's. I have noted that many of the ones replaced at my dealer were usually pulley bearing and or burnt up clutch fields that either cause the pulley bearing or the compressor to seize.

 

These trucks come in with one of these two conditions: cranks slow and wont start or the A/C stops working after 10-20 minutes.

[jbarnett31]

it looks like the compressor is locking up after a few minutes of running, but i can turn it by hand and it feels ok. I just replaced it and about to road test, my fingers are crossed maybe this will fix it.