6.7 Hydraulic system
Attention
–
If there impurities in the oil, change the hydraulic oil in
accordance with the lubrication plan and lubricant table.
–
Never start the engine when hydraulic oil has been drained
off.
–
Each time the hydraulic oil is changed, replace the return filter
element and ventilation filter and clean the intake filter.
–
The hydraulic oil should be changed after any major repair
work to the hydraulic system as well as after the normal
oilchange intervals.
6.7.1 Checking the hydraulic oil level
–
Check the hydraulic oil level on the oil sight glass (1).
–
If necessary, top up the oil level as far as the upper part of the
sight glass using the oil filling plug (2).
6.7.2 Replacing the return filter element
–
Unscrew cap (1).
–
Pull out the filter element (2) and replace it with a new one.
–
Check the seal ring (3) on the cap and replace if necessary.
–
Screw cap in place.
6.7.3 Changing hydraulic oil, incl. cleaning the
intake filter
Danger
There is a danger of scalding when working with hot oil.
–
Open oil filling plug (1)
–
Open the drain oil plug (2), drain off the oil.
–
Remove the cover of the hydraulic tank (3).
–
Remove the intake filter (4) in the hydraulic tank.
–
Wash out the intake filter in cold cleaner and blow out using
compressed air.
–
Carefully remove remnants of sealant from seal surfaces.
–
Clean the hydraulic tank.
–
Install the intake filter.
–
Apply new sealing compound.
–
Refit hydraulic tank cover.
–
Screw in oil drain plug, use a new seal.
–
Replace ventilation filter (5).
–
Fill up with oil (refer to lubrication plan for correct amount and
type of oil).
–
Screw in oil filling plug, use a new seal.
–
After a brief test run, check the oil level once again and top up
if necessary.
36
6. Maintenance
2
1
1
2
3
1
3
5
2
4
