Operation & Maintenance Manual──LG968 /969Wheel Loader
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z Rotate to tight the oil drain plugs of two wheels near front axle and the oil inlet plug at the middle
of axle shell.
z Replace the rear axle oil according to the procedures above. Selections of hydraulic oil please see
“CHAPTER IV 2.2 Selection of Oil, Fuel and Coolant”. The followings are the same.
3.6.4.2 Adding Oil to ZF Axle
① Oil Level Checking
z Park the machine on level position! Examine all the places that oil needs to be added. Oil
draining should be done some time after the machine is driven.
NOTICE: Be careful for the splash of hot oil when drain oil, add oil and rotate to open oil plug.
② Types of Oil
z Oil level of Tire side: rotate the hub until the word “Olstand” is at horizontal position. Oil level
standard is justified as oil flowing out the oil drain plug hole.
z Oil level of Axle: Oil level standard is justified as oil flowing out middle oil adding hole or the
oil draining plug hole.
③ Examination
z If the oil level drops after several minutes, add some more until the oil level reach the prescribed
position can keep stable.
NOTICE: Check the oil level every month! Examine the oil level especially after new drive Axle is
substituted or the drive Axle is repaired before loader is used.
④ Oil Replacing
z Replace the oil first time after the new loader is driven 500 hours, and replace oil every 1000
hours after then, and replace at least once every year.
⑤ Oil for brake
z Mobile oil Delvac super 1310 （registered as SAE10W）is recommended for inner brake of
drive Axle.
NOTICE: It is not allowed to use other brake liquid that is not authorized by ZF. Drain the air in axle
after replacing the new axle or repairing the oil routs of axle.
⑥ Working temperature
z The continuous working temperature of axle should not be higher than 90 degree. If the
temperature is higher than 130 degree, please stop to examine the brake system and axle.
⑦Lubricate grease
z Please use lubricate greases with the following features:
Lithium-based saponification grease, dripping point should be 170 degree NLG2 degree,
lubricate grease should be anticorrosive, water-resistant and press stable. Add grease every week
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