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4. MAINTENANCE
HYDRAULIC TANK TEMPERATURE CAN
REACH 180 DEGREES F MAXIMUM.
Refer to Operating section of this manual for hydraulic
oil conditions and recommendations.
Before disconnecting any hydraulic components, be
sure engine is shut off and relieve all pressure. Before
applying pressure to system, be sure all connections are
tight and lines, fittings, and hoses are not damaged.
IMPORTANT: When hoses, oil filter, and/or
hydraulic components are changed, start the engine
and purge the air from the system prior to checking
the oil level. To do this, idle the engine for three
minutes with control lever in NEUTRAL position.
Slowly engage forward to reverse. This allows fluid
to replace air introduced with filter change. If this
procedure is not followed, partial or complete
failure of the pump may result.
Change hydraulic oil filter at 5 hours then every 100
hours.
1. Remove and discard hydraulic oil filter using a
filter wrench.
2. Oil new filter seal and install new filter element,
tighten approximately 3/4 1 - 1/4 turn after
packing contacts filter housing. DO NOT
overtighten filter element.
IMPORTANT: Immediately after completing filter
change, crank engine for 30 seconds without
permitting engine to start. This will help insure
adequate lubrication to components before engine
starts.
3. Start engine and run to check for possible leaks.
4. Stop engine and replenish hydraulic oil.
NEVER OVERFILL THE HYDRAULIC TANK.
USE THE SIGHT GAUGE LOCATED ON THE
HYDRAULIC TANK. A 1/4 1/2 AIR BUBBLE
WILL BE SEEN AT THE TOP OF THE GAUGE
SHOWING THE FLUID LEVEL.
WARNING
Change hydraulic oil every 800 hours. Use Mobil 424.
1. Run engine approximately 5 minutes to warm up
oil. Shut engine off.
2. Remove breather cap and oil drain plug, drain
into suitable container.
3. Apply thread sealant to breather cap and drain
plug, install drain plug.
4. Fill hydraulic tank with correct hydraulic oil
(approximately 20 gallons). Use the sight gauge to
watch for proper oil level, install breather cap.
IMPORTANT: Immediately after completing oil
change, crank engine for 30 seconds without
permitting engine to start. This will help insure
adequate lubrication to components before engine
starts.
5. Start engine and run to check for possible leaks.
6. Stop engine and replenish hydraulic oil.
4.7 HYDRAULIC BREATHER
Replace every 800 hours or yearly. P/N 35483.
PRESSURIZED RELEASE OF FLUIDS FROM
HYDRAULIC SYSTEM CAN CAUSE SERIOUS
BURNS. SHUT OFF ENGINE. ONLY REMOVE
BREATHER CAP WHEN COOL ENOUGH TO
TOUCH WITH BARE HANDS. SLOWLY LOOSEN
CAP TO FIRST STOP TO RELIEVE PRESSURE
BEFORE REMOVING COMPLETELY.
4.8 ENGINE COOLING SYSTEM
EXPLOSIVE RELEASE OF FLUIDS FROM
PRESSURIZED COOLING SYSTEM CAN
CAUSE SERIOUS BURNS. SHUT OFF ENGINE.
ONLY REMOVE FILLER CAP WHEN COOL
ENOUGH TO TOUCH WITH BARE HANDS.
SLOWLY LOOSEN CAP TO FIRST STOP TO
RELIEVE PRESSURE BEFORE REMOVING
COMPLETELY.
WARNING
WARNING