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Bobcat 853 hydrolic tank was run dry and now wont lift anything. changed filters fixed lines any ideas

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rlev_7

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Check for an air lock

Posted on Sep 21, 2019

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ray gallant

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  • Bobcat Master
  • 68,615 Answers

Might be airlocked

Posted on Sep 21, 2019

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5 Related Answers

Thomas Stewart

  • 582 Answers

SOURCE: Hydrolic arms wont lift up or down on Bobcat

CHECK ALL THE SAFTEY SWITCHES ON THE SAFTEY BAR . IF THE UNIT MOVES FORWARD AND BACKWARDS THE SWITCHES AREN'T THE PROBLEM

Posted on Aug 23, 2009

Testimonial: "The unit will move forward and backward. And the auxillary hydrolic switch works. I can also get front and back tilt, just no up and down."

Anonymous

  • 1 Answer

SOURCE: 5.9 diesel have changed the fuel lift pump and

i have a '95 and it does the same thing when it is cold. starts and runs good when temp is warm.

Posted on Feb 23, 2010

lame_penguin

  • 223 Answers

SOURCE: I have an 863 bobcat that doesn't idle well and

There should be more than just one filter on that motor, check at the lift pump and injector pump.

Gelled fuel can be a pain, if that's the problem then warm it up (tarp and salamander for a few hours or leave it inside the shop overnight if the shop is warm), top off the fuel and give it a can of Power Service brand Diesel Kleen, then try it.

lp

Posted on Dec 30, 2010

HansPP

Hans Pearson

  • 2510 Answers

SOURCE: I just bought an 853

This could be a long and drawn out procedure. First thing is to check the hydraulic reservoir to see if it has sufficient fluid. Next would be the relief valve, see that it is not stuck in a by-pass mode (Internal leak). There would be movement of fluid in the reservoir if this is the case. If there is no indication of fluid being moved around, the pump is the next item of suspicion. Check that it is being driven - no sheared drive etc. If the pump seems to be pumping and there are indications say of fluid being returned to the reservoir, there could be a major internal leak on one of the components. THis would then most likely be in a selector valve rather than one of the actuators/motors. If you work through the above and find any other symptoms, come back to me and we can continue this investigation.

Posted on Feb 09, 2011

emissionwiz

Marvin

  • 85239 Answers

SOURCE: what makes a hydrolic pump whine in a bobcat 331 mini excavator?

It is either low on fluid or it is defective, only two reasons I know of.

Posted on Feb 22, 2012

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1 Answer

How do I fix as bobcat 863 deutz running issue


diesel engine give good service provided that the fuel is clean and with no air in the system
the problem can be air in the fuel lines to the pump, blocked filters , vent problem at the tank.
diesel fuel suffers from a moss growth in the fuel tanks which blocks the filters and can cause injector tip problems
As the engine starts and runs I would change the fuel filter and bleed all the air out for a starter
you may also drain the water trap under the filter or in the water separator filter before the filter
If you see evidence of the moss ( brown slimy looking substance in the filters ) use a good quality diesel fuel conditioner to kill it off

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Hello Angie, Check the fuel filter. Sometimes when the fuel tank is run dry, the sediment on the bottom of the tank gets sucked up by the fuel pump and clogs the fuel filter.

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What is the easiest way to remove the fuel tank in a bobcat 853


There is no easy way, other than removing engine as the tank is wedge shaped and lies under engine and battery.

In a pinch get a boat fuel tank and re route your fuel lines.

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make sure all pivits are free of clean as necessary and lube system. there should be grease fittings on pivit points!

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1998 751 Bobcat ! How do you remove fuel tank ?


hi i had the same problem . lift the cab up and look back by the hydrulic pump the tank is under it but you do not need to pull it out there is a 90 degree fitting for the supply line pry out the fitting and the tank strainer is hooked to it , if not it fell off in the tank .if it is there it is must likely cloged up it is a cheap part to replace . well i hope this helps you

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Replace fuel line on 863 bobcat


you need to take off thr right rear tire and remove inspection plate,then reach in and pull line from top of tank. if pickup tube is original eqip. it has probably broke off. you will find 3/4 of old tube in bottom of tank. go to bobcat dealer and get replacement tube,which is now all poly and flexible. while you are at it,reroute fuel line to the plunger,by putting it down bottom right side of engine,right under motor mount below alternator. an easy test of fuel line is to take off fuel cap and then blow air in hose at primer bulb towards tank.if you hear the air at fuel tank opening,your tube is broken. if you hear bubbling line should be good. you need to have a can of air in your tool kit,go to walmart and get can of air in the electronics department,the opening is small,get yourself an male air fitting from automotives and put on end of air can,use pipe tape on end. if fuel line gets dirty you can blow back to tank at primer bulb,this an emergency fix,if primer bulb is collapsed the line is clogged or pickup is clogged.

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Bobcat 753 skidsteer right drive control is jerky going forward and trying to turn,it dosent want to feather in.Thanks Pete V.


check and, clean the hydrolic directional combination valve screens; dirt in the lines causes this

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