Perkins 403C-11, Workshop Manual, Page: 120 / 128

14
110 Workshop Manual, TPD 1458E, issue 3 - Perkins Confidential: Green
400 Series
Wiring diagram 55 amp alternator 403C-15, 404C-22 and 404C-22T
Charging circuit
Caution: Diode capacity: current 3 amps, reverse voltage 600V this is mandatory.
Notes:
l
Maximum cable size for 375 Lucar terminals on the alternator is 65/0,3 mm (4,5 mm²) therefore twin cables
are required at connection to the alternator.
l
Maximum current draw for standard oil pressure switch is 0.42 amps (5 Watts maximum bulb).
l
A delay fuse can be fitted if necessary.
Alternator charge lamp, 55 amps
Alternator charge lamp rating: 12V - 2,2W at 850 rev/min.
When the engine is stopped the alternator charge lamp is illuminated via the battery. The light is extinguished
when the engine is operated and the alternator is generating.
The use of a lower wattage bulb than the rating above will increase the speed at which the alternator will
operate.
e.g. a charge lamp with a lower wattage bulb will have a rating of 12V - 1,2W at 1300 rev/min.
Circuit
Cable
number
Circuit
current
Maximum
circuit
resistance
Maximum
circuit
volt drop
Remarks
Alternator charging 4, 7, 11 55 Amps 0.0143 ohm 0.50 Volt See glow plugs circuit
Starter motor solenoid 4, 5, 6 15.75 Amps 0.0400 ohm 0.63 Volt See glow plugs circuit
STD glow plugs
(via glow signal)
4, 5, 8, 9, 10
(Peak max)
52 Amps
0.0139 ohm 0.50 Volt -
Fuse
Glow signal
Key switch
AC
30
17
19
50
5
1
Oil press.
switch
Oil press. Altr.
Alternator
2 diode
IND
Solenoid switch
Glow plugs
10
9
8
D1
D2
2 DIODE
Thermo
switch
4 3
7
11
65A 80/0.4 (10)
B
S
3
2
1
W
B+
B
6
Starter motor
12V
Battery
K1091/2
Water temp.