Hyundai 110D-9 Manual page 213

(6) Supply oil into the differential gear and the
planetary gear.
Oil amount : 19 (5.0 U.S. gal)
(7) Supply oil until it overflows from the oil filler, then
install the plug.
As the truck is hot after operation, wait until
the temperature has dropped.
If a work requires frequent use of brake,
replace it earlier than normal change
interval.
33) CLEANING AXLE BREATHER
Remove dust or debris around the breather.
(1)
Remove the breather and wash it with a cleaning
(2)
oil.
Differential gear
Fill & oil
level plug
Planetary gear
7-44
110D9MI52
Air breather
110D9MI46