Lincoln Electric IM10102 AIR VANTAGE 650 - Manual (Page 36)

D-3 MAINTENANCE D-3
FUEL FILTERS
When working on the fuel system:
• Keep naked lights away, do not smoke !
• Do not spill fuel !
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The AIR VANTAGE ® 650 CUMMINS is equipped with a
Fuel Filter located after the lift pump and before fuel
injectors.The procedure for changing the filter is as fol-
lows.
1. Close the fuel shutoff valve.
2. Clean the area around the fuel filter head. Remove
the filter. Clean the gasket surface of the filter head
and replace the o-ring.
3. Fill the clean filter with clean fuel, and lubricate the
o-ring seal with clean lubricating oil.
4. Install the filter as specified by the filter manufactur-
er.
Mechanical overtightening will distort the threads,
filter element seal or filter can.
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COOLING SYSTEM
The AIR VANTAGE ® 650 CUMMINS is equipped with a
pressure radiator. Keep the radiator cap tight to pre-
vent loss of coolant. Clean and flush the coolant sys-
tem periodically to prevent clogging the passage and
over-heating the engine. When antifreeze is needed,
always use the permanent type.
• When draining the entire contents of the system,
remove radiator cap and open vent cock on top of
tank (counter clockwise). Next, pull both drain hoses
through the access hole in the base and open both
valves until system is empty.
• When refilling, close both valves on drain hoses and
open vent cock on top of tank to vent air from system
fully. Close vent cock when done. (See Figure D.1)
AIR VANTAGE ® 650 CUMMINS
WARNING
WARNING
FIGURE D.1
S29260 VM
CLOSE WHEN FINISHED.
OPEN BOTH DRAIN VALVES TO
DRAIN SYSTEM COMPLETELY.
OPEN (COUNTER-CLOCKWISE)
THIS VENT FITTING
WHEN FILLING SYSTEM.
CLOSE WHEN FINISHED
FILL COOLANT HERE.
REPLACE CAP COMPLETELY
WHEN FINISHED.
OFF
ON