Hydraulic Top Link: Project Completed!

[deere_x475guy]

Nice job Bill! I want to do the same thing to my 4110. I just sent you a PM.

 

[zapper]

I have ordered the top link cylinder from CCM, connectors and hoses from Surplus center and my block connector from Kubota dealer with advice from Bill. I have a b2910 and cant wait to get started putting everything together. This was my parts for surplus center.

To Be Picked
2 9-4503 3 SPOOL 5 GPM EATON CESSNA 30923 OC VALVE 1 $247.95 To Be Picked
3 9-5404-6-6 5404-6 3/8" HEX NIPPLE 1 $.95 To Be Picked
4 9-5605-6-6-6 3/8 X 3/8 X 3/8 NPTF TEE 1 $2.95 To Be Picked
5 9-2404-6-6 JIC 6 TO 3/8 NPT 2404-6-6 1 $.79 To Be Picked
6 9-5406-P-6 3/8" NPT PLUG 1 $.49 To Be Picked
7 9-6901-6-4 6901-6-4 SAE 6 TO 1/4 NPTF RT ANGLE SWIVEL 2 $6.18 To Be Picked
8 455-GG HEX NIPPLE 1/4" NPTM 122-4 2 $1.78 To Be Picked
9 9-6314 1/4" NPT QUICK COUPLER S40-2 2 $22.50 To Be Picked
10 9-6901-8-6 6901-8-6 SAE8 X 3/8" 90 SWIVEL 3 $13.35 To Be Picked
11 9-5502-6-6 3/8 NPTM to 3/8 NPTF 90 ELBOW 1 $2.25 To Be Picked
12 9-6408-6 6408-6 SAE 6 9/16-18 ORB PLUG 4 $2.76 To Be Picked
13 916-1430 1/4" X 30" 1/4 NPTM X 1/4 NPTM 2750 PSI HYD HOSE 2 $13.50 To Be Picked
14 918-3224 3/8" X 24" 3/8 NPTM X 3/8 NPTM 4000 PSI HYD HOSE 1 $7.00 To Be Picked
15 918-3230 3/8" X 30" 3/8 NPTM X 3/8 NPTM 4000 PSI HYD HOSE 1 $7.75 To Be Picked
16 903-3848 3/8" X 48" 3/8 NPTM X 3/8 NPTM 2250 PSI HYD HOSE 1 $9.60 To Be Picked
17 455-II BUSHING 3/8X1/4" NPTF 3220-6-4 2 $1.18 To Be Picked
18 9-5405-4-6 1/4 NPTM TO 3/8 NPTF ADAPTER 2 $3.90 To Be Picked

 

[MadReferee]

Just for your information, The Eaton-Cessna valve you purchased is a 5 gpm valve when your implement flow on the B2910 is 6.4 gpm. Will it make a difference? Maybe, maybe not.

I don't see the power beyond plug listed on your parts. You NEED the power beyond plug.

 

[Bill_in_MI]

I have not perceived any performance difference in my systems...fel, 3pt lift, etc, wit this valve in the loop.

 

[MadReferee]

You have restricted the continuous flow in your implement system by 20%. Excess heat will be generated, and the pump may get over worked continuouly pumping thru the 20% restricted system, thus shortening its life. You might have even voided your warranty, or at least may cause a claim to be rejected if you get a hydraulic failure.

But then again, it might work ok forever. Based on my knowledge of hydraulic systems and the money invested in the equipment, I would not have used that valve. When I did my remotes I rejected that valve for this very reason.

 

[Bill_in_MI]

That's an interesting projection. I have to admit that I am unsure of the rating as it applies to the open center flow vsrsus the work ports. However, when I discovered that the rear block outlet provided by Kubota had 1/4 in pipe ports, I was not too worried about any restrictions that I might be applying. Perhaps those that are just now taking the plunge can check this out more thorougly. I'm not worried.

 

[eberlej]

I'm one of those oddities without a FEL on my Kubota...so the power beyond and continuous flow rating shoudn't be an issue...right??? /forums/images/graemlins/confused.gif I think.

 

[MadReferee]

</font><font color="blue" class="small">( I'm one of those oddities without a FEL on my Kubota...so the power beyond and continuous flow rating shoudn't be an issue...right??? I think. )</font>

Wrong. All valves except the last MUST have power beyond. The 3pt is the last valve in the circuit.

Any valve that you attach to the circuit should be at least capable of passing the gpm of the implement circuit. Failure to do so may cause premature problems with the hydraulic pump.

 

[Bill_in_MI]

I believe Mad is correct about the circuit position of the bock and the 3pt. As far as the valve rating goes, these are somewhat arbitrary based on pressure versus flow curves. They make the call based on a resaonably acceptable cutoff of pressure increase from inlet to outlet, for example. Based on my uneducated guess(somewhat educated guess..as I am an engineer and slept in a Holiday Inn Express recently) I presonally am not worried about an increase of a couple of hundred psi in the continuous flow situation in a system that sees a couple of thousand when working hard. I would liken that to worrying about a blood pressure increase of 1mm of mercury. Not a big deal to me...but some would head off to see the doc.

 

[JerryG]

You need to prevent the build up of heat in the hydraulic system as much as possible. Increased heat will cause premature failure of your seals, as well as your pump and the hydraulic fluid. If you use a valve that has a lower rating than your pump, you will be increasing the heat as well as the constant load on the pump.