JLG 510AJ Service Manual - Manual (Page 128)

SECTION 3 - CHASSIS AND TURNTABLE
3-86 – JLG Lift – 3121181
NOTE: Do not drain oil when engine is cold. As oil cools, sus-
pended waste particles settle on bottom of oil pan. The
waste particles are not removed with draining cold oil.
Drain crankcase with engine stopped. Drain crankcase
with oil warm. This draining method allows waste particles
that are suspended in oil to be drained correctly. Failure to
follow this recommended procedure will cause waste parti-
cles to be recirculated through engine lubrication system
with new oil.
DRAINING THE ENGINE OIL
After engine has been run at normal operating temperature,
stop engine. Turn drain valve knob counterclockwise to drain
the oil. After oil has drained, turn drain valve knob clockwise in
to close drain valve.
FILLING THE ENGINE CRANKCASE
1. Remove oil filler cap. Refer to Operation and Mainte-
nance Manual for more information on lubricant specifi-
cations. Fill crankcase with correct amount of oil. Refer
to Operation and Maintenance Manual for more infor-
mation on refill capacities.
UNDERFILLING OR OVERFILLING THE CRANKCASE WITH
OIL CAN CAUSE ENGINE DAMAGE.
TO PREVENT CRANKSHAFT BEARING DAMAGE, CRANK THE
ENGINE WITH THE FUEL OFF. THIS WILL FILL THE OIL FIL-
TERS BEFORE STARTING THE ENGINE. DO NOT CRANK THE
ENGINE FOR MORE THAN 30 SECONDS.
2. Start engine and run at "LOW IDLE" for two minutes. Per-
form this procedure to ensure lubrication system has oil
and oil filters are filled. Inspect oil filter for oil leaks.
3. Stop engine and allow oil to drain back to sump for a
minimum of ten minutes.
4. Remove oil level gauge to check the 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 ELEC-
TRICAL COMPONENTS CAN CAUSE A FIRE. TO HELP PRE-
VENT POSSIBLE INJURY, TURN THE START SWITCH OFF
WHEN CHANGING FUEL FILTERS OR WATER SEPARATOR
ELEMENTS. CLEAN UP FUEL SPILLS IMMEDIATELY.
WATER SEPARATOR IS NOT A FILTER. THE WATER SEPARA-
TOR SEPARATES WATER FROM FUEL. THE ENGINE SHOULD
NEVER BE ALLOWED TO RUN WITH WATER SEPARATOR
MORE THAN HALF FULL. ENGINE DAMAGE MAY RESULT.
1. Open the drain at the bottom of the separator. Catch the
draining water in a suitable container. Properly dispose
of the drained water.
2. Close the drain.
WATER SEPARATOR IS UNDER SUCTION DURING NORMAL
ENGINE OPERATION. ENSURE DRAIN VALVE IS SECURELY
TIGHTENED TO HELP PREVENT AIR FROM ENTERING THE
FUEL SYSTEM.
1. Cap
2. Locking Ring
3. Element
4. Water Separator Bowl
5. Drain
Figure 3-70. Fuel Filter/Water Separator