Hyundai HL930A Operation & Maintenance Manual page 218

b. Use observe proper safety precautions and dispose of waste materials in an environ-
mentally compliant manner.
Re-install filter element into the air housing.
Replace the primary element at the fourth cleaning.
(2) Safety element
The safety filter element should never be cleaned since the safety filter is the last barrier to con-
taminant before it reaches engine/equipment. The useful life of the safety filter is equivalent to that
of the primary air filter only if the primary filter element is being regularly cleaned. If the primary
filter element is not cleaned, the safety filter should be changed at every third primary air filter
change or after one year of continuous service, whichever occurs first.
11) FUEL TANK
(1) Fill fuel fully when the system is in operation to
minimize water condensation, and check it with
fuel gauge before starting the machine.
(2) Drain the water and sediment from the fuel tank
by opening the drain cock.
Be sure to LOCK the cap of the fuel
tank.
Remove the strainer from the fuel tank
and clean it if it is contaminated.
Stop the engine when refuelling.
All lights and flames should be kept at a
safe distance while refuelling.
12) FUEL PRE-FILTER
Inspect or drain the collected water daily
and replace the element every 1000hours.
(1) Drain water
Open the drain valve to evacuate water for
10 seconds.
Close drain valve.
Do not use tools.
Don't tighten up a drain valve so
strong.
(2) Replace element
Loosen the air vent plug and drain the unit
of fuel. Follow "Drain water" instructions above.
Remove the drain pipe and WIF sensor from filter body.
Remove the filter body from filter head.
Pre-fill a new filter body with fuel and lubricate a gasket on the new filter body.
Install the filter on the filter head. Tighten the filter until the gasket contacts the filter head sur-
face. Tighten the prefilter an additional 3/4 turn after contact.
Connect the drain pipe and WIF sensor to filter body.
Drain plug
Air vent plug
Filter head
Drain Valve
6-24
Cap
Strainer
Lift pump
Filter body
WIF sensor
Drain pipe