Oliver 4680, Руководство пользователя

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6. Separate the filter from the filter housing by pulling them apart.
Note—If you only removed a bare filter, then the housing is still mounted in the tank. Remove it for
cleaning.
7. Remove the O-ring from the shoulder of the filter housing and clean the filter housing in a solvent tank.
Note—Do not gets solvent on O-rings or they will be damaged.
8. Dry the filter housing to remove any excess solvent and replace the O-ring.
9. Rub clean hydraulic fluid on the O-ring that is mounted on the bottom of the new filter and insert the
new filter into the filter housing.
10. Rub clean hydraulic fluid on the O-ring that is on the filter housing shoulder and drop the entire filter
housing in the tank in the same position as it was removed (shoulder side up).
11. Replace the filter cap spring and O-ring, and start the filter cap bolts by threading them into their
holes two or three turns.
12. Place the filter cap on the spring so the prongs fit in the center of the spring, and push down and twist
the cap into place.
13. Tighten the filter cap bolts in an even manner, replace the fitting, and reconnect the hydraulic lines.
To inspect the hydraulic fluid
：
1. Look at the color of the hydraulic fluid in the sight window.
—If the fluid is milky in appearance, then the hydraulic fluid is contaminated with water.
—If the fluid is dark brown or opaque, then the hydraulic fluid is severing contaminated.
2. Smell the hydraulic fluid (remove breather cap).
—If the fluid smells rancid or burnt, then thermal breakdown has most likely occurred.
Inspection Results
If you determine that your hydraulic fluid is contaminated or has experienced thermal breakdown, then
you should perform a major service.
Hydraulic System Major Service
The hydraulic system major service consists of performing a complete “Minor Service,” draining the old
hydraulic fluid, cleaning the tank screen, cleaning the tank, and filling the tank with new fluid.
WARNING
：
The hydraulic system on this machine creates very high pressure and the hydraulic fluid gets hot. Always
stop the resaw, open the conveyor speed valves, make sure the pressure gauge reads 0 psi, and make sure
the fluid cools down before removing any lines or servicing the hydraulic system.
The hydraulic tank, when filled correctly at the sight window, holds approximately 13.5 gallons of
hydraulic fluid. Before draining the hydraulic fluid, make sure you have a drain pan that will hold that
much fluid or make sure that you are prepared to drain the tank, plug the tank, empty your drain pan,
drain the tank, and so forth.