English-77
ELECTRICAL AND HYDRAULIC SYSTEMS
Hydraulic system, PF 21
Keep the hydraulic system clean. Remember to:
• Thoroughly clean before the filling cap is opened or
any connector is loosened.
• Use clean containers when filling the oil.
• Only use clean oil that has been stored in a sealed
container.
• Do not reuse drained oil.
• Change the oil and filter according to the intervals
specified in “Maintenance schedule” on page 29.
In order for a hydraulic system to function without
problem, it must be free from foreign objects. When
used, the system produces particles, which can cause
both wear and abnormal function. In order to remove
these particles, the system contains filters. The filters
are sized so as to capture the produced particles, but if
contaminants are introduced from outside the system,
the filters can quickly become clogged and fail to
function as intended. If there are contaminants in the
system, further contamination will be produced in a
self-propagating cycle. The result will be function
disruptions and much work to clean the system.
Hydraulic System: component locations:
1. Power steering
2. Pump in hydrostatic transmission
3. Hydraulic oil filter
4. Pneumatic cylinder
5. Pressure limiting valve
6. Control valve for pneumatic cylinder
8009-357
Hydraulic System: component locations
