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Gearcase Lubrication
GEARCASE LUBRICATION
NOTE: Dispose of used oil according to the environmental laws and regulations for your area.
LUBRICATION LEVEL CHECK FOR FRONT DIFFERENTIAL, TRANSMISSION, AND REAR
DIFFERENTIAL
Each gearcase component is equipped with two oil port plugs (1 and 2) (Figure 22, Figure 23, and Figure 24). When
the vehicle is on a level surface, use the level indicator hole (upper plug) (1) as a lubricant level indicator. Lubricant
level should be even with the bottom of level indicator hole (1).
LUBRICATION CHANGE FOR FRONT DIFFERENTIAL, TRANSMISSION, AND REAR
DIFFERENTIAL
Use the lower plug (2) for drainage (Figure 22, Figure 23, or Figure 24). Remove both plugs to allow the lubricant to
drain faster. See preceding NOTE.
Front differential:
Clean and install the drain plug (2) and washer before lling the front differential with new lubricant (Figure 22). Tighten
the drain plug to 108 in-lb (12 N·m). Use a funnel when lling the front differential through the lubricant level indicator
hole (1). See Periodic Lubrication Schedule on page 33. Tighten the level indicator plug to 120 in-lb (14 N·m).
1
2
1
2
215
Figure 22 Front Differential Lubrication Level
216
Figure 23 Transmission Lubrication Level
Transmission:
Clean and install the drain plug (2) before lling the transmission with new lubricant (Figure 23). Tighten the drain
plug to 96 in-lb (11 N·m). Remove the ll plug from the top of the transmission case and use a funnel to ll the
transmission with lubricant. See Periodic Lubrication Schedule on page 33. Apply Loctite 567 to the threads of
the ll plug and tighten to 21 ft-lb (28 N·m).
HUV 5420 DX All-Wheel Drive CE Mark Diesel Vehicle Owner’s Manual Page 39