Excavator manoeuvring incident

  • I have a Cat 930g loader with priority steering. The

    I have a Cat 930g loader with priority steering. The priority steering valve, the one the pump goes directlying into and divides the flow to the steering first and foremost then to the rest of the functions is not working properly and we don't know what to do. It happened a little while after we changed the pump. The hose running from the steering priority valve to the hydraulic metering valve

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  • Ford 7610 Hydraulics - Ford Forum - Yesterday's Tractors

    Aug 20, 2014 · I stripped the priority pack & it was clean and damage free, rebuilt & no change. Someone then told me that one of the valves within the priority pack splits down further - when you extract it there is an allen key slot in one end of the valve. Count the turns taken to remove it as this is a variable setting.

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  • Hydraulic Fan Drive Solutions - Parker Hannifin

    cavitation check valve allows the motor to spin freely when the fan is powered down and the optional anti-drain valve keeps fluid in the motor after long shutdowns. In the steering circuit, the steering protection relief valve protects the steering lines from overpressure. The steering priority flow valve maintains appropriate flow to the

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  • John Deere 300 Industrial hydraulic problems - TractorByNet

    Jul 17, 2008 · If it is working your priority valve is stuck. The valve is located on the side of transmission above the filter housing. If there is a problem with it the back …

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  • Wheel Loader Fan Drive Solutions Guide - Parker Hannifin

    Loader Control Valve Steering Priority Valve Parker PFD Steering Priority Valve Brake Charging Valve PGM500 Aluminium Gear Motor Or PGM600 Iron Gear Motor for Maximum Efficiency Optional Fan Reverse Valve Anti-Cavitation Valve Motor Anti-Drain Valve Parker ACV Dual and Single Brake Charging Valves can be supplied mounted onto the PGP500 & 600

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    Buy Second Hand Excavators China Direct From Second Hand Excavators Factories at Alibaba.com. Help Global Buyers Source China Easily.

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  • B2150 HST Transmission trouble - Kubota Tractors - Popular

    B2150 HST Transmission trouble. winchesterdon. Join Date: Aug 2005. Posts: 10 Woodland, Washington. Kefid 114378. Ok, this is my first post ever but at my wits end here.. I have a 2150 HST with 1500 hrs on it and have developed the following problem. When loading the bucket or lifting the tiller the hydrostatic drive quits, in other words

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  • How to Cure a Sticky Lifter or Stuck Valve | It Still Runs

    Valves and lifters function as part of a vehicle's valve system. Valves open and close, allowing compression for the power stroke and the release of exhaust gases. Valve stems can stick either permanently or sporadically, due to heavy varnish on the valve stem or weak return springs. Lifters control the valve

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  • M5400 hydraulic problems - Kubota Tractors - Popular

    M5400 hydraulic problems. Karl Fletcher. Join Date: Posts: 1. Kefid 25778. I have a Kubota M5400 that releases hydraulic pressure thru the PTO clutch valve. Whenever I raise the front loader the pressure relief valve releases pressure and the loader will barely lift. The tractor has had this problem to a lesser degree from the day it was new.

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  • MF 1135 hydraulic problems | Tractor Forum

    Mar 25, 2013 · I took the priority valve into a heavy equipment repair place, as I did not have any specs on it. They couldn't get any either so wouldn't take it apart. I have good pressure on the return line, and to the bucket lift. My problem, I think is in the priority valve. Do you have any information on it. There isn't a Massey service center in 200 miles.

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  • IH 574 MCV flow divider valve removal - Technical IH Talk

    Mar 28, 2014 · Hi all: I am having steering problems with my 1974 IH2500B / 574 loader tractor. I have been having problems with the steering not working and after some troubleshooting and searching of the archives, I decided that I would pull the "Flow Divider valve" (priority valve) out of the MCV. My problem

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  • loader hydraulic valve stuck Kubota 2320 | Tractor Forum

    Aug 21, 2020 · 2012 Kubota B2320 with loader LA304 has a 'stuck' piston that won't go down on hydraulic valve. I've checked all obvious things like connections, fluid level, swapped out hoses to confirm. Initially I could still curl but not tilt. As I worked to figure it out, the piston completely froze

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  • 6420 pto disengages | Green Tractor Talk

    Jul 11, 2012 · John Deere 2030 w/245SL Loader John Deere 6415 w/640SL Loader John Deere 285 50" deck Stolen May 2017 John Deere x485 62" deck AWS My second thought is the Priority spool valve in the main valve block is stuck. Priority valve give priority to steering and brakes only. :greentractorride::greentractorride:J:greencart: ickup: John Deere 2030 w

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  • Why Spool Valves Stick | Brendan Casey's hydraulics blog

    May 31, 2016 · But if the valve is solenoid operated, the solenoid can only exert 10 pounds of force! This problem is commonly referred to as 'silt-lock' and can be especially problematic for valves in contaminated systems which are operated infrequently. Furthermore, if a silt-locked valve is operated by an AC solenoid, then the likely outcome is a burnt

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  • Used KOMATSU Excavator factory, Buy good quality Used

    China's leading second hand komatsu excavator product market. all products Used Crawler Bulldozer Used CAT Bulldozer Used KOMATSU Bulldozer Second Hand Forklifts Second Hand Excavators Second Hand Cranes Used Road Roller. PC160-7 16 Ton Crawler Second Hand Komatsu Excavator 121HP. Model: PC160-7; Min: 1 Unit; Contact Now. Komatsu PC360-7

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  • Troubleshooting charts for eight categories of hydraulic

    Circulation/Filter pump stopped with main pumps running. Check circulation/filter pump for problems. Hydraulic unit temperature high. Check cooling pump operation. Check the cooler water strainer. Check water thermostat operation. Check that none of the pressure relief valves were set too low. If required, correct the setting.

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  • John Deere 310SE hydraulic problem | Heavy Equipment Forums

    Jul 19, 2018 · If it is only getting hot at the top section of the control valve then it would most likely be a relief valve or the priority valve is sticking/stuck. Does your oil get hot without moving any functions?

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  • JD 1020 hydraulics problems | Green Tractor Talk

    Nov 20, 2012 · JD 1020 hydraulics problem. jd110 said: Water can accumulate from condensation in a tractor that has not been in use. Also a frequent area water can get in is around the shift lever boots. The boots get torn or cracked and allow rain water in. The loss of hydraulics could be many things.

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  • HydraForce Insider Blog | Load Sense Priority Valves

    The dynamic L.S. priority valves have two orifices in the spool, one for damping (PP), and the other for feeding (DS) oil to the orbital. The pilot flow to the L.S. port of the steering unit is determined by the spring value and the feed orifice. The spring value is typically either 80 psi or 100 psi, while the orifice is typically between 0

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  • Woods Dual Loader 145 FEL control valve stuck

    Mar 07, 2021 · Before removing anything try using the loader when the weather is above freezing for a couple of days. If it still acts the same you may be able to remove the covers on the backside of the valve and clean the spring, lube a bit, and be fine. Post a picture of …

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