
Replacing the oil and filters of the hydraulic tank
Changing the hydraulic oil and filter will introduce air in the hydraulic/hydrostatic system and thus it
requires an hydrostatic startup after the replacement. Refer to the training manual to perform an hy-
draulic/hydrostatic oil change, an oil filter change or an hydrostatic startup.
Checking the hydraulic oil level
See "Hydraulic oil level" (p. 108)
Hydraulic oil change
NOTICE
Risk of damage to the hydraulic system
If the oil change is not carried out properly, the hydraulic system may become damaged.
►
Only specialized staff are permitted to change the hydraulic oil.
NOTICE
Risk of damage to the hydraulic system
Even the smallest dirt particles can cause premature wear or damage to the system.
►
Ensure the utmost cleanliness when handling operating fluids.
►
Only use the specified types of hydraulic oil.
►
Observe the hydraulic oil change intervals.
►
Check the MAX mark: do not overfill.
NOTICE
►
If the hydraulic oil was contaminated because of an operating fault, the hydraulic oil must al-
ways be changed (regardless of the maintenance schedule).
►
Depending on the type of operating fault, directly connected components such as filters, hoses
and coolers should be checked and, if necessary, rinsed or replaced.
Figure 113: Hydraulic oil tank
Pos. Name
1
Filler cap
Snow groomer
BISON
Operating and Maintenance Manual
BISON 908930245 - 30367
11 - Maintenance
189
(
255
)
11.16.3
11.16.4
11.16.5