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 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 Flat face Quick Coupler Hydraulic T140 T180 T190 T200 T250 T300 T320 IL
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Bobcat Hydraulic Spreader HS8 S N AC1N00101 Operation  Maintenance Manual 3 11
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6669385 New Bobcat 653 751 753 753L 763 773 7753 Hydraulic Pump 6667723 6650678
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6504959 New Bobcat Loader Lift Hydraulic Cylinder Seal Kit 520 530 533 540 543
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6504959 Bobcat Loader Lift Hydraulic Cylinder Seal Kit 630 631 632 Rod
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6504959 New Bobcat Loader Grapple Hydraulic Cylinder Seal Kit 600 700 800 Series
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6504959 New Bobcat Loader Fifth Wheel Hydraulic Cylinder Seal Kit 444 500
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Bobcat Skid Hydraulic Case Drain Filter T110 T140 T180 T190 T200 T250 T300 T320
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6630018 New Bobcat 443 Skid Steer Loader Hydraulic Pump 7001434
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Bobcat Secondary Hydraulic Filter T180 T190 skid steer loader 6686926 IL
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Bobcat 743B 751 753 Hydraulic Drive Motor Seal Kit
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Bobcat T140 T180 T190 Hydraulic Drive Motor Seal Kit
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Bobcat T140 T180 T190 Hydraulic Drive Motor Mounting Bolts Kit
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Hydraulic Drive Motor For Bobcat OEM 6662854
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Bobcat 7131026 Excavator Direct to tank Hydraulic kit 325 328 329 331 334 335
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Bobcat 6598757 Hydraulic Coupler
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BOBCAT HYDRAULIC PUMP COMPONENT REPAIR MANUAL
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Bobcat Hydraulic Filter S100 S130 S150 S160 S175 S185 S205 skid steer 6661248 IL
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6816352 New Bobcat Excavator Hydraulic Bucket Cylinder Seal Kit 435 Rod
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NEW BOBCAT HYDRAULIC BLADE CYLINDER  6628548
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NEW GENUINE BOBCAT HYDRAULIC FAN MOTOR  7164320
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Bobcat 334 Hydraulic Tube Line SN198230674 PN6812064
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Bobcat Skid Hydraulic Case Drain Filter S100 S130 S150 S160 S175 S185 S205
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Bobcat Skid Steer Hydraulic Case Drain Filter S220 S250 S300 S330 A250 A300
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Bobcat Early 773 Hydraulic Drive Motor
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Bobcat 642B Hydraulic Drive Motor
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Bobcat 642 Hydraulic Drive Motor
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admin posted at 2009-12-23 Category: Heavy Equipment