Northern Lights and NL1066H3 Operator's Manual - page 32
ONL2-2 7/13
30
Servicing
1. Flush the cooling system and check for leaks and
blockage after the fi rst 3 years or 3000 hours. Then
every 2 years or 2000 hours. The engine must be
stopped and cold.
2. Remove the pressure cap from the expansion tank
with caution. If applicable, open the cooling system
air vent on top of turbocharger.
3. Open the drains on the exhaust manifold and engine
block. Drain the fresh water system (see Component
Locations, pages 4 - 6).
4. Fill the fresh water system by pouring the
recommended coolant mixture as described in
previous
sections.
5. Close cooling system air vent on turbocharger.
6. Start the engine. Check hoses and connections and
repair any leakage.
GENERATOR ENDS
The maintenance and operation recommendations
for the generator end are in a separate Owner's
Manual. If you do not have one of these manuals,
contact your local Northern Lights dealer.
ELECTRICAL SYSTEM - GENERAL
1. Never switch battery switch off or break the circuit
between the alternator and batteries while the
engine is running. Regulator damage can result.
2. DO NOT reverse the polarity of battery cables
when installing the battery.
3. When welding on the unit, disconnect the regulator
and battery. Isolate the leads.
4. Disconnect battery cables when servicing the DC
alternator.
5. Never test with a screwdriver, etc., against any
terminal to see if it emits sparks.
6. A DC circuit breaker protects your control panel
and wiring harness.
BOOSTER BATTERIES
Battery Gas Can Explode. Keep all fl ames and
sparks away from batteries.
1. Before changing or using booster batteries, check
battery electrolyte level. Add distilled water.
2. Booster and main batteries must have the same
voltage rating.
3. First, connect positive (+) terminal of booster
battery to positive (+) terminal of main battery.
4. Then, connect negative (-) terminal of booster
battery to ground on the engine block
(see Figure 29)
.
5. Remove booster battery after starting engine.
6. Sealed batteries: see manufacturer charging and
booster instructions.
Figure 29: Booster Battery Connections
revised 2-23-12