Bobcat Hydraulic

Will putting regular motor oil into a hydraulic reservior to raise the oil level up to normal hurt anything ?

We have a bobcat skid steer loader on the farm that was built in the mid 70's. Works pretty good for its age and we don't push it hard but it has it's share of leaks mostly at the seals. We were told by a mechanic that works on them that if you didn't have any hydraulic oil on hand you could put W30 motor oil in the reservior to bring it back up to proper level. Thats been a couple of years ago and now motor oil of any viscosity is being put into it. Will this damage any of the system; seals ,pump,valves etc.? The whole system will take about 13 gals. and I'm concerned that when I change the filter and top off with oil its just going to be a waste of oil and filter unless the whole system is flushed out.

Yup. The mechanic just wanted extra work. You will be back with a broken hydraulic system pump. You do that in emergency situations. It is not meant to stay in there. The whole system has to be flushed out and cleaned. that means parts taken apart and washed clean of oil. Brake fluid(hydraulic fluid is not oil). Oil will harden seals and neoprene causing them to leak even more. Also oil is corrosive to flexible hoses and they will crack. Oil will also burn.

Bobcat X 325 SERVICE SHOP REPAIR MANUAL MINI EXCAVATOR HYDRAULIC PART 6724480
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BOBCAT 443 SKIDLOADER HYDRAULIC DRIVE MOTOR
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Bobcat X 325 OPERATION MAINTENANCE MANUAL MINI EXCAVATOR HYDRAULIC PART6724546
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BOBCAT HYDROSTATIC HYDRAULIC CONTROL VALVE CYLINDER PUMPS  MOTOR SERVICE MANUAL
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Bobcat Hydraulic Cylinders Repair Service Manual 4 89 40 440 443 540 640 740 843
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Bobcat 863 C Hydraulic Drive Motors NICE Skid Steer Skidsteer
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6672513 New Bobcat Skid Steer 751 751G 753 753G 763 763G 773 Hydraulic Gear Pump
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Bobcat 130 SERVICE SHOP REPAIR MANUAL MINI EXCAVATOR HYDRAULIC PART 6570485
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6804609 Bobcat Skid Steer Loader Lift Hydraulic Cylinder Seal Kit 873 Rod
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7117667 New Bobcat Hydraulic Lift Cylinder S175 S185 S205 773 T190
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6505849 New Bobcat Loader Lift Hydraulic Cylinder Seal Kit 444 Rod
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Bobcat 341 Hydraulic Swing Motor
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Bobcat 331E Hydraulic Drive Motor 9 Sprocket
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$2,780.00
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NEW Bobcat 331E Hydraulic Drive Motor 12 Sprocket
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$2,780.00
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Bobcat 430 Hydraulic Final Drive Motor
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$2,619.70
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Bobcat 730 Series Hydraulic Drive Motor Stump Grinder SG60 Attachment
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Hydraulic Drive Motor For Bobcat OEM 6675939
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Bobcat 630 Series Hydraulic Drive Motor Stump Grinder SG60 Attachment
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Bobcat 6598757 Hydraulic Coupler
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Bobcat Hydraulic Filter 6661248 NOS spin on new in box
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$18.99
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$14.95
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HYDRAULIC QUICK RELEASE FLAT FACE COUPLING EXCAVATOR BOBCAT HAMMER AUGER FULLKIT
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Bobcat Hydrostatic Hydraulic pump T250 T300 864 and similar
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BOBCAT 5060 HYDRAULIC BREAKER OPERATORS MAINT MANUAL
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Bobcat Skid Steer Hydraulic Tube P N 6711735
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$11.00
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Bobcat Skid Steer Hydraulic Tube P N 6711738 or 6727801
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Bobcat Skid Steer Hydraulic Tube P N 6711737
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2 Clark Bobcat Hydraulic Cylinder Seal Kit Part  6509122
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BOBCAT 3 8 HYDRAULIC HOSE 1O013008
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Bobcat 863 C Hydraulic Filter Head Mount 553 653 751 753 763 773 853 873 953
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Bobcat 863 C Hydrostatic Hydraulic Control Block Valve Skid Steer Skidsteer
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Bobcat 863 C Misc Hydraulic Lines 873 T200 864 Skid Steer Skidsteer
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Bobcat Flat face Quick Coupler Hydraulic S130 S150 S160 S175 S185 S205 6680018
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admin posted at 2009-12-23 Category: Heavy Equipment