Left side track of my Volvo EC-240 excavator is extremely slow along with swing function in either direction. Operator is feeling jerks at the pilot lever while operating the swing. We have changed turning/rotary manifold joint seals but problem persists. Any help would be really appreciated.
-
Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!
Volvo EC -240 One track extremely slow along with swing
- Thread starter RKC
- Start date
uffex
Senior Member
Good day RKC
A few questions how many hours has the machine - have you checked the pressures - How is the arm is that oK or is it slow also ?
Kind regards
Uffex
A few questions how many hours has the machine - have you checked the pressures - How is the arm is that oK or is it slow also ?
Kind regards
Uffex
We swapped the hydraulic pump to control valve hoses. Swing and left hand track has become alright but the right track and other functions became slow. We suspect failure of one hydraulic pump and will inspect that. The machine has done 14k + hrs.
uffex
Senior Member
Good day
Before you condemn the pump check that the FR/FL hose drains down when you operate swing etc. if that is correct check the filters for signs of injury - listen at the pump under load - measure the output pressure at full load. Normally the pumps last 10k at least so it may be time to rebuild / replace.
Kind regards
Uffex
Before you condemn the pump check that the FR/FL hose drains down when you operate swing etc. if that is correct check the filters for signs of injury - listen at the pump under load - measure the output pressure at full load. Normally the pumps last 10k at least so it may be time to rebuild / replace.
Kind regards
Uffex
uffex
Senior Member
Good day RKC
Please see attached.
Kind regards
Uffex
Please see attached.
Kind regards
Uffex
uffex
Senior Member
Good day twr
Did you check out the negative control line ?
Kind regards
Uffex
Did you check out the negative control line ?
Kind regards
Uffex
funwithfuel
Senior Member
Check your servile oil to your RCVs. The inlet fitting to the manifold is a Filter fitting. Often times you will find my line on stop against the fitting from the inner jacket of one of your hoses. Obviously you're going to want to start with your left joystick.
funwithfuel
Senior Member
What series is the EC240 are you working on
funwithfuel
Senior Member
Yes then please proceed forward with checking me servo oil pressure and flow at your remote control valves. I would suspect you will find trash in the lines jammed up against the fitting
funwithfuel
Senior Member
how have things worked out for you?
Stodus68
Member
funwithfuel
Senior Member
Step one, please open a new thread with your serial number and model number in the appropriate section. All are not the same, even though a symptom might be similar, the root cause could be very different. Step 2 measure track sag per ops manual. Adjust same , run and recheck. Check fluid in travel gear boxes. Make sure there is oil and it doesn't look like antiseize.