Question about John Deere Seat 310a 310b 401 401b 401c 401d At20490

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310a loader backhoe air in system

Cleaned suction screen and changed both filters now have no hydraulics. Hydraulics was starting strong and after operating about five minutes pressure drops to nothing. Tractor will not move.

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Posted on Jan 02, 2017

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SOURCE: John Deere 210 C backhoe loader - quesion on hydraulic fluid

yep there is!

Posted on Jul 13, 2010

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SOURCE: I have a 1982 John Deere 310A backhoe. The

try changing out the hydro filters

Posted on Feb 17, 2011

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How to adjust the hydrualic pressure on a scat trak 2300d

Before you attempt to adjust the pressure have you flow rated the hydraulic system? If not before you do check or change the suction filter and then do a flow and pressure test to check the integrity of the pump. Most systems don't need an adjustment if pump is working correctly. An indicator may be if it works better cold and gets worse when warmed up this would be a worn pump. Or if it's cold and doesn't seem to do well any time (suction screen first) the pump may be worn too long and no choice but to replace. I am not familiar with a scat track but am familiar with hydraulics, my next questions would be is this is an open center or closed center (ccls) system before I can help further.

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Changed hydraulic filters now hydraulics don't work?

Sometimes with hydraulics you need to "burp" any air from the system, though they tend to be so-called self bleeding. Try filling the filter with fluid and check that the pump has fluid in it to get it pumping. If the fluid was drained from the pump and it has air in it, it won't do anything. Get some fluid in it and it may start pumping.

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My clutch just started slipping. Is there anything I need to check before I take it to a shop to get my clutch done?

the problem may be a faulty clutch master cylinder that has a blocked compensating port
I would suggest taking the vehicle in for an inspection of the hydraulics or the cable if not hydraulic several quotes fro accredited brake and clutch shops.
if the hydraulics have never been checked / cleaned or changed, I would be looking at that first because even if it ends up being the clutch and pressure plate, an old clutch slave and master cylinder will fail quickly with the added pressure of a new pressure plate.

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What causes a mini excavator (Yanmar B27) on rubber tracks to shudder and shake ( bunny hops) when first moving forward or reverse? Would worn track rollers produce this effect? Thx

probably not--This sounds like uneven pressure from the hydraulic pump or problems with the drive motors. Check that the hydraulic oil filter is in good condition (not blocked) and have the pressure in the hydraulics checked.. Have the hydraulic controls checked for correct operation. (if electric controls check for voltage problems to the solenoids and if manual check for control valve problems)

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I have a jcb 527-55 got water in the hydraulics cleaned it out and renewed the oil and filter, but new i dont have any hydraulic pressure the steering is locked and non of the ram move. BUT if i accelerate...

there is a pressure relief valve in the hydraulic pump
if you have no or very little pressure being generated , it may be that that valve is jammed in the open position or the spring controlling it has broken
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Motor runs erratically

Try cleaning the air filter and the fuel filter. Sawmills are dusty places and timber dust can clog-up air filters. Air filters in chainsaws are cleaned hourly for max efficiency.

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