KUHN HR303D, Operator'S Manual

Page: 79 / 96

Maintenance and storage
Power harrows
HR303D/M
77
Draining:
Gearbox HR303D
- Lower the tractor three-point linkage to rest the
machine on the ground.
- Increase top link length to tilt the machine rearwards.
- Place a container of sufficient capacity under drain
plug (3).
- Remove filler plug (1) and its washer.
- Remove drain plug (3) and its washer.
- Allow oil to drain completely.
- Wait for dripping to stop.
- Clean and reinstall drain plug (3) and its washer.
Replace if necessary.
- Adjust the top link length so that the machine is
horizontal with regards to the ground.
- Pour the correct oil quantity and quality through the
opening of the filler plug (1).
- Clean and reinstall filler plug (1) and its washer.
Replace if necessary.
Checking the oil level:
- Place the machine on flat horizontal ground.
- Remove level plug (2).
• The oil level must reach hole lower part (2).
- Clean and reinstall drain plug (2).
Before draining oil, operate the machine for a
few minutes so that the oil warms up.
The gearbox is lubricated with 6 L (1.58 US gal) of SHELL SPIRAX A extreme-pressure gear oil with
viscosity grade 80W90 and API grade GL5.
When draining it is recommended to use:
For normal use:
- A mineral base oil with viscosity grade SAE 80W90 or 85W140 and API grade GL5
(SHELL SPIRAX A 80W90 or SHELL SPIRAX A 85W140).
For intensive use:
- A synthetic base oil, type PAO (Poly-Alpha-Olefins) with a viscosity grade equivalent to
SAE 80W90 or 85W140 and API grade GL5 (SHELL SPIRAX ASX 75W90).