Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

1977 BMW 630CSi Automatic TransFACTORY OEM SERVICE PROCEDURE

Alternators - BOSCH: Specifications: Notes

Alternator⁽¹⁾

Amp Output @RPM

Max. Current

K1(RL) 14V 35A 20

23 @2000

35A

K1(RL) 14V 45A 20

30 @2050

45A

K1(RL) 14V 55A 20

36 @2000

55A

K1(RL) 14A 55A 22

36 @2200

55A

⁽¹⁾	Charging voltage is 14 volts.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.