Dynapac CC 722C, Maintenance Manual

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21 CC 722/722C M722EN2
EVERY 2000 HOURS OF OPERATION (YEARLY)
Hydraulic reservoir
– changing the fluid
When you change the fluid, it is essential that the roller
has been in operation sufficiently long to heat the fluid,
so that it flows easily when draining. Any contamination
will flow out with the fluid.
Danger of being burned when draining hot
oil. Protect your hands.
Observe cleanliness and make sure the roller is level.
Run the roller up a ramp onto a level platform, or some-
thing similar, to make it easier to drain about 120 liters
(32 gal) of fluid.
Switch off the engine and apply the
parking brake/reserve brake.
Change the hydraulic filters and ensure that the reser-
voir cover can breathe unrestrictedly. If not, clean in
diesel oil.
Fill with the stipulated amount of hydraulic fluid. Check
the amount in the sight glass.
Start the engine and run the roller and operate the
vibration.
Ensure that ventilation (extraction) is
adequate if the engine is run indoors.
(Risk of carbon monoxide poisoning).
Stop the engine and check fluid level and tightness.
Fig. 30 Changing the hydraulic fluid
1. Hydraulic filter
2. Sight glass
Applies to both sides of the drum:
Run the roller to position the plugs (2) at the bottom.
Unscrew the plug on one side and drain off the oil.
Note: the volume of oil is 27 liter (7 gal).
Drain off oil on the other side.
Run the roller to position the plugs (2) at the top, level
plug (1) at the same height as the drum frame, see
figure.
Fill with the stipulated grade and amount of oil, see
page 3 and 4. Ensure that oil reaches up to the level
plug (3).
Drum
– changing the oil
1
3
2
Fig. 31 Changing the drum oil
1. Dipstick
2. Drain/Filler plug, M30
3. Level plug, M12
2 1
WARNING
WARNING
WARNING