G424 Service Manual Adjustment and Troubleshooting194
Drive belt slipping –Adjust belt.
Alternator
Stator coil grounded or open-circuited –Replace or repair.
Rotor coil open-circuited –Replace.
Brush and slip ring not properly connected –Replace brush if worn. (Clean holder.)
(Brush does not properly come down) –Polish slip ring.
Diode short-or open-circuited –Replace rectifier assembly.
Battery
Short or improper electrolyte –Add electrolyte and adjust specific gravity.
Defective plates (internal short circuit) –Replace.
Terminals in loose contact –Clean and then retighten.
Wiring
Open circuit or loose contact between –Repair.
key switch and alternator terminals L and R
Burnt fuse of above-mentioned circuits or –Replace fuse and repair contacting
holder in loose contact section of holder.
Open circuit or loose contact between –Replace.
battery and alternator terminal B
Burnt fuse of above-mentioned circuits –Replace fuse and repair contacting
or holder in loose contact section of holder.
Defective IC regulator –Replace.
Run-down battery
Overcharged
battery
Battery
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