Spindle cooling fan
Here is a short video explaining the symptoms of a defective electric HSD cooling fan and how to replace the fan. The cooling fan is mounted on top of the spindle remove (4) bolts (1) ground wire and (1) connector. Do the reverse order to install the new electric HSD spindle cooling fan.
The company where I bought my official HSD cooling fan is www.cncpd.com GREAT service.
Here is the HSD document on how to replace the electric cooling fan https://www.dropbox.com/s/lavomroe4yi...