JLG 450A_AJ Series II Service Manual - Manual (Page 199)

SECTION 3 - CHASSIS & TURNTABLE
3121180 – JLG Lift – 3-149
NOTE: Do not drain oil when engine is cold. As oil cools,
suspended waste particles settle on bottom of oil
pan and not removed with oil. Drain crankcase with
engine stopped. Drain crankcase with oil warm. This
draining method allows waste particles suspended
in oil to be drained correctly. Failure to follow this
procedure will allow waste particles to recirculate
through engine lubrication system with new oil.
DRAINING ENGINE OIL
Run engine until normal operating temperature is
reached, then stop engine. Turn drain valve knob counter-
clockwise to drain oil. Turn drain valve knob clockwise to
close drain valve after oil has drained.
FILLING ENGINE CRANKCASE
1. Remove oil filler cap. Refer to Operation and Mainte-
nance Manual for more information on lubricant
specifications. Fill crankcase with correct amount of
oil. Refer to Operation and Maintenance Manual for
more information on refill capacities.
UNDERFILLING OR OVERFILLING CRANKCASE WITH OIL CAN
DAMAGE ENGINE.
TO PREVENT CRANKSHAFT BEARING DAMAGE, CRANK ENGINE
WITH THE FUEL OFF. THIS WILL FILL OIL FILTERS BEFORE
STARTING ENGINE. DO NOT CRANK ENGINE FOR MORE THAN 30
SECONDS.
2. Start engine and run at “LOW IDLE” for two minutes.
Perform this procedure to ensure lubrication system
has oil and oil filters are filled. Inspect oil filter for
leaks.
3. Stop engine and allow oil to drain to sump for a min-
imum of ten minutes.
4. Remove oil level gauge and check oil level. Maintain
oil level between “MIN”” and “MAX” marks on oil
level gauge.
Fuel Filter/Water Separator
FUEL LEAKED OR SPILLED ONTO HOT SURFACES OR ELECTRI-
CAL COMPONENTS CAN CAUSE A FIRE. TO HELP PREVENT
POSSIBLE INJURY, TURN START SWITCH OFF WHEN CHANGING
FUEL FILTERS OR WATER SEPARATOR ELEMENTS. CLEAN UP
FUEL SPILLS IMMEDIATELY.
FUEL/WATER SEPARATOR REMOVES WATER FROM FUEL AND
IS NOT A FILTER. NEVER RUN ENGINE WITH SEPARATOR MORE
THAN HALF FULL OF WATER. ENGINE DAMAGE MAY RESULT.
1. Open drain at bottom of separator. Catch water in a
suitable container and dispose of properly.
2. Close drain.
FUEL/WATER SEPARATOR IS UNDER SUCTION DURING ENGINE
OPERATION. DRAIN VALVE MUST BE SECURELY TIGHTENED TO
PREVENT AIR FROM ENTERING FUEL SYSTEM.
1. Cap
2. Locking Ring
3. Element
4. Water Separator Bowl
5. Drain
Figure 3-96. Fuel Filter/Water Separator