Volvo Penta TD520GE Workshop Manual page 120

Industrial engines
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Wiring diagram
Wiring diagram (TD/TAD520, 720, 721, 722 VE stage 1 engine with key activation)
1. Battery
2. Main switch
3. Starter motor
4. Generator
5. Hourmeter
6. Fuse
7. Key switch
8. Start relay
9. Switch for instrument light
10. Charging control lamp 3W
11. Revolution counter
12. Instrument light
13. Preheating time control unit
14. Glow plugs
15. Preheater lamp
16. Temp switch excessfuel
solenoid
130
17. Excessfuel solenoid
18. Stop solenoid
19. Signal horn
20. Water temperature gauge
21. Temp sender/switch engine
22. Alarm lamp cool water
23. Oil pressure gauge
24. Oil pressure sender/switch
25. Alarm lamp oil pressure
26. Water level switch
27. Alarm lamp water level
28. Relay
29. Diode
30. Tachometer (sender)
Conductor area
12V
24V
A.
90 mm
2
(0.140 in
2
) 70 mm
1)
2)
B.
10
mm
2
(0.016 in
2
) 6
mm
2
2
C.
25 mm
(0.04 in
)
25 mm
D.
50 mm
2
(0.08 in
2
)
25mm
E.
6 mm
2
(0.009 in
2
) 25 mm
2
Unspecified area 15 mm
(0.023 in
1)
2
For 6-cylinder = 16 mm
(0.025 in
2)
2
For 6-cylinder = 10 mm
(0.016 in
Group 30
2
(0.109 in
2
)
2
(0.009 in
2
)
2
2
(0.04 in
)
2
(0.04 in
2
)
2
(0.04 in
2
)
2
)
2
)
2
)

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