Operation & Maintenance Manual──LG958L/LG959 Wheel Loader
92
3.6.5 Adding Oil to Hydraulic Oil Box
① Oil Level Check
z Park the machine on level ground and lower the bucket to the ground. Check whether there is an
angle between front and rear frame.
z Check the oil level indicator of the hydraulic oil box on the left side of the machine. The oil level
is normal if the level indicator scale is at a range of 12 ±2. If the oil level indicator is lower than
10, please add specified hydraulic oil.
Refer to CHAPTER IV 2.2 Selection of Oil, Fuel and Coolant, for selection of oil.
② Oil Replacement
△
! WARNING
While replacing oil if other maintenance needs to be done do
so following the relevant rules, and pay attention to safety.
△
! NOTICE
Pay attention to the clarity of the oil while replacing it; never
let other materials enter the hydraulic system directly.
z Clean out the in bucket. Park the machine on level ground and put the transmission lever in the
neutral position. Pull the braking control lever. Start the engine and keep in the idle status for 10
minutes. Raise and lower the lift arm several times, and tilt the bucket forward and backward
several times.
z Raise the lift arm to the highest position; tilt the bucket backwards to the extreme position and
shut the engine.
z Push the bucket control lever forward to let the bucket tilt forward freely by its weight. Drain out
the oil in the bucket cylinder. After the bucket has tilted to the desired position, push the lift arm
control lever forward to let the lift arm fall down by its weight freely. Drain out the oil in the lift
arm cylinder.
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