Bosch Kl 1206 User Manual Top <95% NEWEST>

If the battery casing feels hot to the touch, unplug the charger immediately.

| Symptom | Likely cause | Action | |---------|--------------|--------| | Battery won’t charge, lamp off | Broken belt, wiring, or open rotor | Check belt & continuity from D+ to rotor | | Battery won’t charge, lamp on | Failed regulator (no excitation) | Replace KL 1206 | | Battery overcharges (>15V) | Regulator shorted (full field) | Immediate replacement | | Intermittent charging | Worn brushes (<5mm) or loose DF connection | Measure brush length; clean DF terminal | | Low voltage at idle, OK at high rpm | Worn brushes or poor D+ signal | Check brushes, D+ wiring resistance | | No output, alternator hot | Regulator stuck closed | Replace KL 1206 | bosch kl 1206 user manual top

: Lead-acid batteries can emit explosive gases during charging; never operate the charger in a closed-in area with poor ventilation. If the battery casing feels hot to the