OM673L3 5/21
10
1. Generator junction box
2. AVR circuit breaker
3. AC circuit breaker
4. DC circuit breaker
5. Air filter housing
6. Fuel filter
7. Oil fill, top
8. Coolant fill, pressure cap
17. Fuel inlet and return
18. Coolant recovery bottle
19. Control panel plug-in
20. Heat exchanger end cap
21. Heat exchanger/
expansion tank/
expansion manifold
9. Fuel injector
10. Fuel injection pump
11. Fuel lift pump
12. Sea water pump
13. Lube oil drain
14. Oil fill, side
15. Lube oil dipstick
16. Lube oil filter
22. Starter motor
23. Exhaust elbow
24. Vibration mount
25. DC regulator
26. DC alternator
27. Belt guard
Marine Generator Component Locations
2
1
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Figure 1 (left):
Service side
M673L3G/LD3G
w/GEM S
eries base
frame (S/N: 6732-54637 and above)
Figure 2 (right):
Non-service side
M673L3G/LD3G
w/GEM Series
frame (S/N: 6732-54367 and above)
20
20
21
22
23
24
26
27
25
Updated 3-16-21
