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O6108  08/01

h.  Align the injection timing line (as speci-

fi ed in the Technical manual or on the data 
plate on the engine) on the damper with the 
pointer by slowly rotating the crankshaft in 
the clockwise direction.

Figure 13. Pointer and Crankshaft Damper

i.  Loosen fuel feed lines (12,7), fl ange nuts 

(12,10) and the pump mounting nut (12,8).  
It will be necessary to use a socket wrench, 
a universal joint and an extension to tighten 
the two nuts on the back of the pump. Rotate 
the pump, little by little, while operating the 
priming pump (12,6) until no fuel fl ows out 

j.  Tighten four nuts (12,10) on pump and 

mounting nut (12,8) on bracket at a torque of 
49-54 foot lb. (6-7.5 kgm). Now recheck the 
injection timing to see it is properly adjusted 
by repeating steps 'd' through 'f'.

k.  If timing line on drive case does not align 

with the timing line  on the pump, re-stamp 
pump fl ange with new line.

l.  Reassemble the delivery valve and reinstall 

fuel line and clamps (12,3).

m.  Bleed fuel system.

19

Figure 14.  Injection Pump Coupler

SP12. TURBOCHARGER

1.  Check for air leaks every 250 hours. Air leakage 

will lower engine output and may cause black 
exhaust smoke and soot.

2.  Listen along air line while engine is running. A 

whistling or hissing sound indicates leakage.

3.  Leakage on the pressure side, between turbo and 

engine, can be found by applying soapy water to 
the air line.

4.  Tighten the hose clamps, replace hose or gaskets 

as required.

5.  Check to see that the lubrication and cooling 

lines are tight and without leaks.

SP13. TURBO BOOST

1.  This check measures the amount of air the turbo 

is pushing into the engine. It should be done by 
an authorized dealer every 750 hours.

2.  Your engine can have a boost gauge permanently 

installed so you can monitor the turbo's output 
from the control panel. (See page 8).

3.  On the bottom of the intake manifold there are 

two 1/8" NPT threaded outlets at cylinders 4 and 
5.  Remove one of the plugs to install the boost 
pressure gauge hose.

4.  The correct boost pressure is as follows:

Servicing

  

Model

  Number        HP         RPM          PSI

  

L6108A      410 HP 

2700        37- 41

  

L6108A      370 HP      2600        33- 37

  

L6108A      300 HP      2300        32- 35

Summary of Contents for LUGGER L6108

Page 1: ...O6108 For Models M6108 NL6108 and L6108 OPERATOR S MANUAL Marine Generators Marine Diesel Engines Land Based Generators...

Page 2: ...other reproductive harm CALIFORNIA Proposition 65 Warning Northern Lights 4420 14th Avenue N W Seattle WA 98107 Tel 206 789 3880 Fax 206 782 5455 Copyright 2001 Northern Lights Inc All rights reserve...

Page 3: ...Starting 10 Starting Generator Sets 10 Starting Propulsion Engines 10 11 Shutdowns and Alarms 11 Break in Period 11 SERVICING SCHEDULE CHART 12 13 SERVICING Lubrication General 14 Oil Changes 14 Chan...

Page 4: ...r of your unit in the blank space provided This will give you a reference whenever service or maintenance is required Model numbers give unit s application block model aspiration and RPM Lugger turboc...

Page 5: ...moke while filling fuel tank or servicing fuel system Keep your hands feet hair and clothing away from power driven parts Check for any loose electrical connections or faulty wiring Engines should be...

Page 6: ...13 Heat exchanger drain in rear end cover 14 Anti vibration mounts standard shown Hydrolastic mounts optional 15 Dipstick 16 Raw Water Pump 17 Raw Water Drain 18 Raw Water Zinc 19 Alternator 20 Air C...

Page 7: ...sion Tank 2 Coolant Fill 3 Vapor Trap Valve Cover 4 Lube Oil Fill 5 Crankcase Breather 6 Exhaust Manifold 7 Cooling System air vents 3 8 Turbocharger 17 Engine Oil Cooler 18 Secondary Fuel Filter 19 M...

Page 8: ...eturn Line 10 Fuel Inlet Line 11 Oil Filter behind Fuel Water Separator 12 Fuel Water Separator 13 Alternator 14 Dipstick 15 Oil Fill 16 Starter 1 Generator Junction Box 2 Air Cleaner 3 Fuel Filter 4...

Page 9: ...O6108 08 01 7 Notes...

Page 10: ...E The oil pressure gauge shows the oil pressure in the engine lubricating system 4 WATER TEMPERATURE GAUGE Registers temperature of cooling water 5 HOUR METER Keeps track of engine running time 6 D C...

Page 11: ...ut 5 HOUR METER The hour meter keeps track of the accumulated length of the engine s oper ating time 6 KEY SWITCH The key must be kept in ON position while the engine is running 7 STOP BUTTON Hold dow...

Page 12: ...eck Gauges Often Oil pressure must be above 29 PSI The DC voltmeter should read between 13 and 14 volts 26 28 volts 24 volt systems at 60o F 16o C ambient temperature Water temperature gauge must be b...

Page 13: ...first 100 hours If this is not possible maintain no less than a 50 load to ensure proper seating of the piston rings Vary the load to help seat rings 6 If the proper propeller is used the engine shoul...

Page 14: ...e note on chart 3 When necessary 4 Change at first 50 and first 100 hours 5 Adjust at first 100 hours 12 DAILY SP1 Check oil level in engine SP7 Check primary fuel filter SP14 Check cooling water leve...

Page 15: ...leakage SP18 Check zinc electrodes HE engines only 500 HOURS or annually SP20 Change cooling system filter 750 HOURS or annually SP4 Replace air cleaner SP6 Check valve clearances SP9 Change secondar...

Page 16: ...Use marks on the valve stem as a guide See Fig 9 c Turn pump handle in clockwise direction and pump oil into a suitable container When the engine is empty switch the valve and drain the gear oil d Clo...

Page 17: ...ckwise direction one complete revolution until 1 6 TOP is again at the pointer and adjust the valve clearance for the valves marked with an O in Fig 11 Cylinder No 1 2 3 4 5 6 Intake Valve X X O X O O...

Page 18: ...crew the 16 hand primer knurled knob on the injection pump and loosen until it can be pulled up by hand see Fig 12 6 Operate the hand primer up and down until most of the air bubbles are expelled and...

Page 19: ...der 12 4 17 SP11 INJECTION PUMP 1 The pump settings maximum speed idle speed and exhaust smoke should be checked after every 2400 hours of operation Service of the fuel injection pump should only be d...

Page 20: ...fuel injection line from the No 1 cyl inder delivery valve on the injection pump 12 4 b Remove delivery valve holder Remove spring and delivery valve and put valve holder back in injec tion pump c Pla...

Page 21: ...m Bleed fuel system 19 Figure 14 Injection Pump Coupler SP12 TURBOCHARGER 1 Check for air leaks every 250 hours Air leakage will lower engine output and may cause black exhaust smoke and soot 2 Listen...

Page 22: ...the coolant Water pump impellers are also susceptible to pitting 2 Vapor bubbles C are formed when the piston s impact causes the liner walls to vibrate sending pressure waves into the coolant 3 These...

Page 23: ...pen flame Avoid contact with eyes Avoid contact with skin Do not take internally In case of contact immediately wash skin with soap and water For eyes flush with large amounts of water for at least 15...

Page 24: ...4 in 4 5 cm below the filler cap sealing surface when the engine is cold When filling with coolant the venting cock on top of the turbocharger should be opened to ensure that no air pockets form in th...

Page 25: ...ystem start engine check for leaks SP19 RAW WATER PUMP 1 Heat exchanger cooled engines only Change the the sea water pump impeller every year or as needed 2 Remove the pump end cover Pry out the impel...

Page 26: ...osen drive belts 9 Disconnect and clean battery Remove to warm storage place if possible 10 Clean outside of unit Paint any scratched or chipped surfaces Put corrosion preventative on all exposed meta...

Page 27: ...er sizes for boats with single engine using a three blade propeller and gears with a 3 loss factor NOTE Prop size is influenced by many factors hull design load boat use It is impossible to make an ab...

Page 28: ...m 31 6 803 31 6 803 31 6 803 31 6 803 31 6 803 31 6 803 Height in mm 43 6 1107 43 6 1107 43 6 1107 43 6 1107 45 1143 45 1143 Apx Weight 3 phase lbs kgs 3274 1485 3563 1616 3563 1616 3763 1707 3503 158...

Page 29: ...0 Standard instrument harness length ft m 20 6 20 6 20 6 Air Air consumption at rated speed ft3 Min m3 Min 844 25 4 801 23 700 20 Minimum engine room vent area in2 cm2 240 1548 215 1387 190 1266 Exha...

Page 30: ...electrolyte level of each battery Defective electrical system Repair or replace ground wire Starter Cranks Slowly Low battery output Battery is too small Battery cables are too small Check specific gr...

Page 31: ...m Drain flush fill and bleed system Clogged primary Clean or replace filter element fuel filter element Clogged secondary Replace filter element fuel filter element Dirty or faulty injection nozzles H...

Page 32: ...ealer and propeller chart Grass etc on bottom of boat Clean the hull Turbocharger malfunction Stop the engine Remove the air cleaner Make sure the compressor wheel is stationary and then rotate it wit...

Page 33: ...m bottom of boat Improper valve clearance See your dealer Injection nozzles dirty See your dealer Injection pump out of time See your dealer Engine not at proper temperature Check your thermostats Che...

Page 34: ...Reduce load Check propeller size Injection nozzles dirty See your dealer Engine out of time See your dealer Engine Emits Improper fuel Use correct fuel for temperature White Smoke Cold engine Warm up...

Page 35: ...O6108 08 01 33 Wiring Diagrams DC Wiring Schematic Standard Ground NL 24V C 4417...

Page 36: ...O6108 08 01 34 Wiring Diagrams DC Wiring Schematic Standard Ground Marine 24V C 4419...

Page 37: ...O6108 08 01 35 Wiring Diagrams DC Wiring Schematic Isolated Ground Marine 24V C 4421...

Page 38: ...O6108 08 01 36 DC Wiring Schematic Standard Ground Marine 12V C 4430 Wiring Diagrams...

Page 39: ...O6108 08 01 37 Wiring Diagrams DC Wiring Schematic Isolated Ground Marine 12V C 4448...

Page 40: ...O6108 08 01 Wiring Diagrams DC Wiring Schematic Standard Ground Lugger Propulsion Engine 24V C 4358 38...

Page 41: ...O6108 08 01 39 Wiring Diagrams DC Wiring Schematic Standard Ground Lugger Propulsion Engine 12V C 4318B...

Page 42: ...uantities Your vessel s operating conditions may require more of a given part Consult your dealer 1 Lube Oil Filter 4 4 2 Air Filter Element 1 1 3 Fuel Filter 2 2 4 Coolant Filter 2 2 5 Injector 0 6 6...

Page 43: ...ern lights com 4420 14th Ave NW Seattle WA 98107 Tel 206 789 3880 1 800 762 0165 Fax 206 782 5455 Northern Lights and Lugger are registered trademarks of Northern Lights Inc 2001 All rights reserved L...

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