4012 WIRING DIAGRAM TWIN STARTERS AND ELECTRONIC GOVERNOR
(CURRENT ENGINES)
4012/16 Diesel, February 1997 7
3
Key
(Fig. 64)
1 Engine fitted terminal box
2 Oil pressure switch
3 Starter motor 1
4 Starter motor 2
5 Battery charging alternator
6 Start inhibit relay
7 Emergency stop switch
8 Starter relay
9 Two air shutoff solenoid valves energise
to stop. To operate only in conjunction
with overspeed fault. Must be manually
reset after operating.
10 Fuel stop solenoids energised to run
11 Two switch speed unit
12 Speed ref.
13 Overspeed
14 'A' bank engine fault switches
15 'B' bank engine fault switches
16A Water temperature
16B Water temperature
17A Oil pressure
17B Oil pressure
18 Magnetic pick-ups
19 Engine flywheel
20 Electronic governor control box
21 Electronic governor actuator
22 NOTE: All switches are shown with the
engine at rest
23 Typical linking box to controller
Fig. 64
