JDcrawlers Messageboard

I hear you and plan on breaking it down further. It has to be an obstruction centering around the return to dig valve.

I am not running it, those hydraulic pumps start at $1400!!!!

I have swapped out the quick connects with new ones, but they are still quick connects........ that being said.... straight flow connectors are an alternative? from JD or are they aftermarket? also....one other observation.....my hydraulic fluid in the reservoir........gets really hot, making the re...

Still dealing with this whining sound coming from the loader control valve area of my 455E, (Unit is not attached to backhoe) checked hydraulic filter (looked clear/ unclogged), drained reservoir and checked intake screen (clear), vibration is strong on loader control valve and line that runs to cou...

Unit is completely disconnected from backhoe and the two hoses are reattached.

Will check out the hose couplers today and the return level function as suggested.

Thanks for the replies. Ill keep you posted!

Back hoe is off.

Whining sound is coming from hydraulic fluid reservoir side to my immediate right as I am seated in unit.

Its not coming from the pump (which is at the very front of the machine under the radiator).

I have a 455E crawler/loader that makes a high pitched whining sound thats coming from the hydraulic fluid pump reservoir area. Ive taken the top cover off, looked inside reservoir, screen is clear on-the intake.... recent fluid/filter change however I have been connecting unit to a backhoe (chasing...