Northern Lights M673D, M673L User Manual

M673D / M673L

Soundshield Assembly Instructions

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Seattle, WA 98107
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1200 West Int’l Airport Road
P.O. Box 190208
Anchorage, AK 99519
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www.northern-lights.com

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East Coast Branch

Northern Lights Industrial Park
8 Connector Road
Andover, MA 01810
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L612 02/05

M673D/M673L Soundshield

ITEM # DESCRIPTION ADE P/N QTY NOTES

1. Base board 39-78014 1

2. Extrusion, vertical 39-78016 4

3. Extrusion, horizontal, sides 39-78017 2

4. Extrusion, horizontal, ends 39-78024 2

5. Corner casting 05-70001 4

6. Bolting assembly 00-75714 20

7. Rear panel assembly 39-78006 1

8. Front panel assembly 39-78004 1

9. LH side panel assembly 39-78009 1 w/vent box

10. RH side panel assembly 39-78011 1 no vent box

11. Top panel assembly 39-78007 1

12. Penetration panel assembly 39-78008 1

13. Panel retainer bracket, 30R 23-70036 6

14. #10 screw s/s x 5/8” long 12-72002 8

15. Toe bracket, 30R 23-70038 4

16. Hex nut, nylock 1/4-20 14-00112 6

17. Intake hose 1 1/8 ID 18-28001 1

18. Air filter element 24-28002 1

19. Cover, intake 10-28001 1

Specifications

Enclosure:

Length (OA) 32.0 in (814 mm)

Width 20.63 in (524 mm)

Height 21.0 in (533 mm)

Base:

Length 32.5 in (826 mm)

Width 21.2 in (538 mm)

Height 0.75 in (19.05 mm)

Assembled Height:

21.72 in (552 mm)

Assembled Weight (est):

55 lbs (24.9 kg)

L612 02/05

1

1

Prior to assembly, inspect all components for damage. Report any damage to the
shipping company. Check the packing list to be sure all parts are included.

2

3

Select a mounting location in accordance with the guidelines in the IM1000 Instal­lation Manual (supplied with the generator set). The generator set must typically be
mounted on a rigid, flat surface above a strong structure, such as the vessel’s string­ers, to minimize vibration transference to the hull. CAUTION: THE BASEBOARD

IS A NON-STRUCTURAL MATERIAL AND MUST BE FULLY SUPPORTED TO
MINIMIZE FLEX.

Note that the generator set is designed for single side service. When viewed from

Install the base board (item 1) in the vessel in as near a level attitude as possible.
Observe the arrow symbol on the board’s topside surface. This indicates the top and
forward end orientation of the genset / soundshield. Make sure arrow is correctly
positioned or the unit will not mount correctly within the shield.

2

Install toe bracket (item 15) to each corner of the base board with screws (item 14)
into pre-drilled holes. See figure 1.

Note that there are pre-drilled “through” holes on each side of the baseboard. Use
these holes as guides to drill into the supporting substructure for through-bolting.

4

Place the generator set onto the baseboard. Note that there are lines present on the
base board at the front and the sides; position the genset base pan to conform with
these alignment markings.
Install the hold down clips to the pre-drilled through holes along both sides of the
genset base pan. Use 3/8” or 9 mm bolts of appropriate length to secure the genset
and baseboard to the underlying structure. Loosen lifting eye mounting bolt and tip

L612 02/05