How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Dan Your Own Question
Dan
Dan, Technician
Category: Agriculture and Farm Equipment
Satisfied Customers: 4392
Experience:  17+ yrs. shop and field experience with all major brands of heavy equipment, trucks and farm equipment - 1995 WyoTech graduate.
65405794
Type Your Agriculture and Farm Equipment Question Here...
Dan is online now
A new question is answered every 9 seconds

1997 JCB 214 FRONT LOADER BUCKET PISTON NOT HOLDING UP HAVE

Customer Question

1997 JCB 214 FRONT LOADER BUCKET PISTON NOT HOLDING UP HAVE ALL NEW SEALS
Submitted: 1 year ago.
Category: Agriculture and Farm Equipment
Expert:  Dan replied 1 year ago.
Hi, my name is***** will be glad to help. A quick test to confirm a cylinder is good and not leaking by is to cap both ports with the correct cap and then see if the rod will move manually... If not the cylinder is good and the seals are not bleeding by. If the cylinder is good it will be either the control valve spool worn and leaking by or not centering, or a faulty relief valve cartridge sticking open with debris or o rings on the relief cartridge. Let me know
Customer: replied 1 year ago.
What's a cartridge? Where is it at? Wich relieve valve? Where is minted at?
Expert:  Dan replied 1 year ago.
On the control valve, there are two.... One for the front bucket controls and one for the rear backhoe controls. The main lines come from it to the cylinders and functions. When you operate a function the control valve opens the port for that function to send oil for the function to operate. The relief "Cartridge" is what controls the set pressure in that circuit with a poppet that creates a restriction to allow the set pressure to build under spring tension. Once the set pressure is reached the poppet pushes against spring tension to open the port to dump the excess pressure back to sump/tank. If the relief is sticking open or the o rings are bad the set pressure will not be reached in that circuit. They are located on the control valve and are threaded into the control valve and usually have an adjusting screw in the center of them. Do not change the adjustment without gauges to monitor but you can remove the assembly to check for debris or damaged o rings. Copy and paste this link in your browser for a parts breakdown to help.
https://www.google.com/search?q=jcb+214+relief+valve&biw=1280&bih=640&tbm=isch&imgil=aB_GbN17GUxrRM%253A%253BDuvrkv0uYAt5XM%253Bhttp%25253A%25252F%25252F777parts.net%25252Fjcb%25252F214e-LL%25252Fs2268682.html&source=iu&pf=m&fir=aB_GbN17GUxrRM%253A%252CDuvrkv0uYAt5XM%252C_&usg=__Egy54DZ0eEDTY-_IB7v9k03aQmM%3D&ved=0CDMQyjc&ei=mRVnVeL4K4mAsQTkn4LoBw#imgrc=aB_GbN17GUxrRM%253A%3BDuvrkv0uYAt5XM%3Bhttp%253A%252F%252F777parts.net%252Frepository%252F600x%252Fjcb%252F5d%252F261840.jpg%3Bhttp%253A%252F%252F777parts.net%252Fjcb%252F214e-LL%252Fs2268682.html%3B600%3B711