4012/16 WIRING DIAGRAM, TWIN STARTERS, ELECTRONIC GOVERNOR
(INTERMEDIATE ENGINES)
4012/16 Diesel, February 1997 7
1
Key
(Fig. 62)
1 Engine fitted terminal box
2 Two off air shutoff solenoid valves
energise to stop. To operate only in
conjunction with overspeed fault.
3 Emergency stop
4 Starter motor 1
5 Starter motor 2
6 Start relay
7 Battery charging alternator
8 Oil pressure switch
9 Start inhibit relay
10 Fuel stop solenoids (energised to run)
11 Two switch speed unit
12 Overspeed
13 Speed reference 600 rpm
14 Engine fault switches
15 'A' bank
16 'B' bank
17A Water temperature
17B Water temperature
18A Oil pressure
18B Oil pressure
19 Magnetic pick-ups
20 Engine flywheel
21 Electronic governor control box
22 Electronic governor actuator
23 NOTE: All switches are shown with the
engine at rest
24 Typical linking box to controller
Fig. 62
