Barko 495B - SE - Hydraulic Reservoir Maintenance; Draining the Reservoir; Cleaning the Reservoir; Filling the Reservoir

Service Manual
495B SE (S)
41
Last Updated - 9/28/2016
HYDRAULIC RESERVOIR MAINTENANCE
The supply source for the hydraulic system, the oil
reservoir, is located behind the cab. A sight gauge for
checking oil level is located on the reservoir next to the
back of the cab (see Figure 1).
Check oil level in reservoir before each period of
operation,ordaily.If,atanytime,youndthelevelis
low, check the loader for leaks around tubes, hoses,
ttings,andcouplings.DONOTRUNMACHINEWITH
LOW HYDRAULIC OIL!
When maintaining the hydraulic system, keep all parts
clean and remove all dirt from the area before you begin
disassembly. Use caps and plugs to keep dirt out of
tubelines and openings.
ACCESS
COVER
RETURN
FILTERS
DRAIN PLUG
(on bottom of reservoir)
HYDRAULIC OIL CHANGING PROCE-
DURE
This procedure should be used once during the breaking
in period of a new loader (after one week, or 50 hours of
operation) and then every six months, or 1000 hours.
Throughout the oil changing procedure remember that
cleanliness is absolutely necessary. Hands, tools,
funnels,oilllingequipment,theoillleropening,and,
above all, the hydraulic oil itself must be kept absolutely
clean. Dirt in the hydraulic system can cause serious
damage to pumps, valves, and cylinders.
DRAINING THE RESERVOIR
1. First, be sure boom is lowered to the ground and
secure.
2. Remove the reservoir drain plug to drain the oil.
CLEANING THE RESERVOIR
1. Clean the area around the access cover and then
remove the cover.
2. Remove all dirt and sediment from inside the
reservoirandfromllerstrainer
3. After everything in and around the reservoir is
completely clean, replace the drain plug and access
cover.
FILLING THE RESERVOIR
1. Withthedrainpluginplaceandtightened,rellthe
tank with the recommended oil using the hand pump
attatched to the hydraulic system.
2. With all the control valves in neutral, start the
engine, running it slowly until the new oil circulates
throughout the system and the pump quiets down.
3. Add more oil until proper level is shown on sight
gauge.
This will work the air out of the system and prevent
cavitation, which is caused by air bubbles
in the oil as it passes through a pump.
4. Check the oil level again after the loader has been
operating for an hour or two. Add oil as needed.
Figure 1
SIGHT GAUGE