skyking1
Senior Member
I'm missing that little one over the swing drive drain. I have the top one that you walk on back to the engine off, I have five hoses to change out the look pretty rotten. That's about $1,500 in John Deere speak.
-
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!
New to me EX120-2
- Thread starter JDCrow
- Start date
JDCrow
Well-Known Member
I Know these are not Small, where did you leave it?
Simon C
Senior Member
- Joined
- Jul 1, 2015
- Messages
- 676
- Location
- Rocky Mountain House , AB., Canada
- Occupation
- Heavy Equipment Mechanic
Take a 20 Liter pail and hook up a vacuum to the big pour spout with tape. take small stiff line like pex and strap to a straight 3/8 or 1/2 round bar to it with pipe sticking out past round bar by 2 inches. Put other end of Pex pipe into small hole on top of 20 liter pail and seal up a bit. Put pipe to bottom of tank to vacuum around and pick up small dirt While the vacuum is sucking. Some guys even put some diesel in the bottom to help with the cleaning if there is a neck sticking up a bit in the tank to stop the diesel from going to pump. Hope it helps. Simon
JDCrow
Well-Known Member
I think I follow what you built. I’ll see what I have to rig up to make something similar. Thanks!
skyking1
Senior Member
That walk one on top is at the shop, leaning against a bucket waiting to go back on
The little one on the bottom went missing long ago. It really is a small hatch.
The big ones you had made? Mine are all there but not straight by any means. That machine has been in some rough stuff. I hit them with a sledgehammer when I was doing the 2000 hour service.
JDCrow
Well-Known Member
Yeah I had them made. He missed at least one of them on top and has to make it.
JDCrow
Well-Known Member
Got the oil all changed finally. Work has been a zoo. Most o-rings on pump replaced and leaks are almost nil. There is a sensor on cab side of pump underneath that hard to get to. I can see it leaking. Sensor is unplugged.
Tore into the valves, replaced o-rings and the nylon washers.
I was hoping this would fix my “boom up” creepy slow. Still no go. I can put the bucket on the ground same and before and it shoots right up.
I’m trying to wrap my head around how the valves work. The body (holding valve) that controls the boom did not have a pool of fluid in it like the others. The springs were fine.
I’m thinking the main spool is stuck? Or at least based on all the other o-rings/nylon rings are shot. Or P1 pressure?
Any suggestions?
Tore into the valves, replaced o-rings and the nylon washers.
I was hoping this would fix my “boom up” creepy slow. Still no go. I can put the bucket on the ground same and before and it shoots right up.
I’m trying to wrap my head around how the valves work. The body (holding valve) that controls the boom did not have a pool of fluid in it like the others. The springs were fine.
I’m thinking the main spool is stuck? Or at least based on all the other o-rings/nylon rings are shot. Or P1 pressure?
Any suggestions?
Attachments
Last edited:
Simon C
Senior Member
- Joined
- Jul 1, 2015
- Messages
- 676
- Location
- Rocky Mountain House , AB., Canada
- Occupation
- Heavy Equipment Mechanic
I just watched a John Deere 200DLC that would not hold the arm straight out. It would not raise slowly or would fall down quickly. A new relief valve for that arm circuit was installed and instantly everything was 100%. As the other field tech said. you can take it apart and will find nothing. Not visible to the naked eye, but change for a new one and she is good to go. It reminds me of many a wheel bearing I changed on cars, lots of noize from old bearing, no noize from new bearing. Never seen anything inside. That is my experience. Simon
JDCrow
Well-Known Member
Was kinda thinking about the relief and holding valve. They are relatively inexpensive.
JDCrow
Well-Known Member
Trying to follow along as P1 input and shuttle, valve B port, holding valve, relief valve, makes my head hurt
JDCrow
Well-Known Member
New Relief valves went in for both boom and stick.
Stick is still a little fast coming in.
Boom is no improvement, though now if I start to swing while still trying to raise boom, it will go up normally.
Reading through the Tech Manual, I’ve arrived at bad Solenoid, or VPCV.
anyone have any experience with either? The solenoid is an easy fix, I can’t seem the locate the VPCV on any diagrams or parts manual
Stick is still a little fast coming in.
Boom is no improvement, though now if I start to swing while still trying to raise boom, it will go up normally.
Reading through the Tech Manual, I’ve arrived at bad Solenoid, or VPCV.
anyone have any experience with either? The solenoid is an easy fix, I can’t seem the locate the VPCV on any diagrams or parts manual
