Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Voltage Regulator

Internal Design Type III
Designation
Bosch
Volvo
Conditions In-Car
Air Temperature
9.45 at 25 Volts At Degrees Celsius (V @ deg C)
Warm Temperature
9.45 at 60-80 Volts At Degrees Celsius (V @ deg C)
Condition On-Bench
Air Temperature
12.60 at 25 Volts At Degrees Celsius (V @ deg C)
Warm Temperature
12.60 at 60 Volts At Degrees Celsius (V @ deg C)
Test In-Car Alternator Speed
6 Revolutions Per Minute (rpm)
Engine Speed
3000 Revolutions Per Minute (rpm)
Load On Alternator
30-50 Ampere (A)
Test On-Bench
Alternator Speed
6000 Revolutions Per Minute (rpm)
Engine Speed
0
Load On Alternator
5 Ampere (A)
Control Voltage
In-Car
13.6-14.6 Volts (V)
On-Bench
14.1-14.9 Volts (V)
Load Control Tolerance
13.9 - 14.6 V
47 Ampere (A)
60 Ampere (A)
77 Ampere (A)
90 amp alternator -20%