4012/16 WIRING DIAGRAM, TWIN STARTERS, SINGLE START RELAY, ORIGINAL AIR
SHUT OFF VALVES
4012/16 Diesel, February 1997 6
9
Key
(Fig. 60)
1 Terminal box
2 Starter motor 1
3 Starter motor 2
4 Engine instrument panel
5 Oil temperature gauge
6 Oil pressure gauge
7 Water temperature gauge
8 Oil temperature gauge
9 Oil pressure gauge
10 Water temperature gauge
11 Tachometer
12 Ammeter
13 Emergency start
14 Start relay
15 Oil pressure switch
16 Battery charging alternator
17 Start inhibit relays
18 Fuel stop solenoids (energised to run)
19 Air shutoff solenoid valves. Energised
to stop on overspeed fault only. Not
continuously rated. Must be manually
reset.
20 Two switch speed unit
21 Switch 2 overspeed
22 Switch 1 speed 700 rpm
23 Micro switches
24 Engine fault switches left/right bank
25A Water temperature switch
25B Water temperature switch
26A Oil pressure switch
26B Oil pressure switch
27 Engine flywheel
28 Magnetic pick-ups
29 Heinzmann Control box
30 Heinzmann actuator
31 Fitted terminal box
Fig. 60
