136
Maintenance and Service
Operator's Manual GB
9.5
• Lubricate the upper bearing with a little
grease.
• Slew the crane a little.
• Again lubricate with a little grease. Repeat,
until the column has been slewed round
completely.
9.5
Hydraulics
9.5.1 Slewing housing: checking the oil
level/oil change
Checking the oil level in slewing housing
1. Check if the oil level on the measuring
stick is between the maximum and mini-
mum levels.
2. If the oil level is below the minimum level:
Top up through the hole for the measuring
stick with transmission oil of type MIL-L-
2105C or API-GL-5, viscosity SAE-80W-
90
Changing oil in the slewing housing
Change the oil in the slewing house yearly!
1. Use a container with sufficient capacity to
receive the oil. Drain off the oil through the
drain plug.
2. Refill through the hole for the measuring
stick, with transmission oil of type MIL-L-
2105C or API-GL-5, viscosity SAE-80W-
90.
3. Slew the crane, after filling to the end
positions, three times.
4. Check the oil level. If necessary top up
again.