913218/CP0307 58 PRINTED IN U.S.A.
Axle Planetary Hubs
The hubs have one plug each used for draining and fill-
ing (see illustration).
1. Position the wheel until the oil level arrow points
down. Remove the drain/fill plug and allow the oil
to drain out. Replace the plug.
IMPORTANT: DO NOT discharge oil onto
ground. Catch and dispose of per local waste dis-
posal regulations.
2. Re-position the hub so the oil level arrow is hori-
zontal. Fill with fresh oil as specified in the
LUBRICATION chapter. When the oil runs out,
install the drain/fill plug. Repeat this procedure on
the three remaining hubs.
CHECKING ALTERNATOR AND
FAN BELT CONDITON
Refer to the engine manual for proper belt tension
adjustment and replacement procedures. If the belt
shows wear or cuts, it should be replaced. Order
replacement belt from your engine dealer.
CHECKING EXHAUST SYSTEM
Examine the muffler and tail pipe for possible holes.
Re-tighten any loose clamps and make sure the mani-
fold outlet gasket is not leaking.
NOTE: Perform all other service requirements
up to this point, as well as the following.
CHECKING HYDRAULIC SYSTEM
RELIEF PRESSURES
Pressure settings for relief valves are pre-set at the fac-
tory. Three test ports are provided under the front hood
rear access cover.
Before conducting any test port pressure checks, check
the engine rpm. Engine speed must be 800 rpm at idle
and 2500 to 2550 rpm at high idle.
Steering Relief Pressure
Plug a 3000 psi (207 bar) oil-or liquid-filled gauge into
the test port labeled ”SP.” Cramp the steering fully to
the right or left. The gauge should read 2500 psi (172
bar).
Joystick and Parking Brake Release
Pressure
Plug a 1000 psi (70 bar) gauge into the port labeled
“JP.” With the engine running, the gauge should read
400-425 psi (27-29 bar).
Main Relief Pressure
Plug a 3000 psi (207 bar) oil-or liquid-filled gauge into
the test port labeled “MP.” Fully retract the boom over
the relief valve. The gauge should read 3000 psi (207
bar).
CHANGING HYDRAULIC RESERVOIR
OIL AND STRAINER
Clean all dirt and debris from around the top of the
reservoir, especially around the access cover. Refer to
illustration and use the following procedure:
Hydraulic Reservoir Sump Strainer Removal
Element
TOP OF
RESERVOIR
Service Every 2000 Hours or Two Years
Test ports under
rear access cover.
Plug in drain
position.
Gasket
Access
Cover
Fill Cap
Dipstick
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