Stator - Cs144 Only

Scribe end frames to facilitate reassembly. Remove through-bolts and separate end frames. Remove stator lead attaching nuts and remove stator. Using an ohmmeter, check stator grounds. See Fig 1 . Connect one ohmmeter probe to one stator lead and the other probe to the stator core.

Fig 1: CS144 Alternator Stator Test
Courtesy of GENERAL MOTORS CORP.
Ohmmeter should read infinite. If ohmmeter does not read infinite, replace stator. Repeat test with remaining stator leads. Stator cannot be checked for opens and shorts with ohmmeter.
To reassemble alternator, reverse disassembly procedure. Retain brushes with brush retaining pin during reassembly. See Figure . Remove retaining pin after tightening through-bolts.

NOTE: Manufacturer recommends using a new bearing whenever end frames are separated.