Technical information

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Workshop Manual__3 - 4 LD_cod. ED0053025560_4° ed_ rev. 03

ELECTRIC CIRCUIT

12 V 14 A electrical ignition, diagram with voltage regulator

, battery recharge lamp and manostat

Components:

1 Alternator

2 Starting motor

3 Voltage regulator

4 Battery

5 Oil pressure switch

6 Oil pressure lamp

7 Ignition switch

8 Battery recharge lamp

Note: The batteries, which are not supplied by Lombardini, shall

have a 12 V voltage and the following capacity:

3LD 450, 3lD 451/S, 3LD 510, 3LD 510/S = 45 Ah

4LD 640 = 55 Ah

4LD 705 = 66 Ah

4LD 820 = 70 Ah

12,5 V, 14 A alternator battery recharge curve

It is carried out at + 25° C ambient temperature, 12.5 V battery

voltage.

12.5 V 14 A alternator

It is equipped with a xed rotor assembled on the main journal,

while the pivoting rotor is housed inside the ywheel.

Dimensions (mm):

A = 159

B = 44.5

C = 4

D = 28.5

Note: The clearance between inductor and rotor (air gap) shall

be 0.5 ÷ 0.6 mm.