DRIVE BELT TENSION
For generator drive belt tension and deflection specifications, see BELT ADJUSTMENT table.
BEARING
Check for abnormal noise, looseness and insufficient lubrication. Replace bearing(s) if necessary.
BRUSH
New brush length is.846" (21.5 mm). Minimum brush length is 0.079" (2 mm). If brushes are worn beyond limit, replace them. (Scheme 22)
Scheme 22
RECTIFIER
Using ohmmeter, check for continuity between positive rectifier and stator coil lead connection terminal. Continuity should exist in one direction only. Check for continuity between negative rectifier and stator coil lead connection terminal. (Scheme 23) Continuity should exist in one direction only. If continuity exists in both directions, a diode is shorted. Replace rectifier.
Scheme 23
ROTOR
Using ohmmeter, measure resistance between slip rings. If resistance is not 3.1 ohms, replace rotor. Check for continuity between slip ring and core. If continuity exists, replace rotor. If slip ring surface is rough, smooth with a lathe or fine sandpaper.
STATOR
Using ohmmeter, check continuity between stator coil leads. If continuity does not exist, replace stator. Check continuity between stator coil leads and core. If continuity exists, replace stator.