New Holland CX720 Operator's Manual page 411

BUBBLE-UP GEARBOX
Oil change
The bubble-up gearbox oil should be changed:
• After the first 100 operating hours.
• Thereafter, every 600 operating hours or
annually.
To change the oil, proceed as follows.
1. Drain the oil through plug 2 and catch the oil in a
suitable container.
NOTE: To drain the oil faster, clean the area round
filler plug 1 and remove it.
2. Reinstall plug 2.
3. Fill the gearbox with 0.25 litres (0.07 US gal) new
oil through plug 1.
4. Reinstall plug 1.
Oil capacity
0.25 litres (0.07 US gal)
Oil specification
Use AMBRA HYPOIDE 90, SAE 80W90, NH520A or
an oil meeting the following specification:
• API GL-5
MIL-L-2105 D
•
4–46
SECTION 4 – LUBRICATION AND MAINTENANCE
114