We here in the county of Nassau, NY, 2011 cat 950h, has a code reading 2989.4, will not move or and has no hydraulic

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Customer: We here in the county of Nassau, NY, 2011 cat 950h, has a code reading 2989.4, will not move or and has no hydraulic movement
JA: What is the complete model and serial number of your machine?
Customer: Cat0950hck5k03505
JA: Are you fixing this yourself? What have you tried so far?
Customer: Yes, pretty sure it's a hydraulic valve
JA: Is there anything else the Construction Mechanic should know before I connect you? Rest assured that they'll be able to help you.
Customer: No, the seat was repaired, maybe it's a sear safety issue
Answered by catmastertech in 6 hours 1 year ago
25+ years of experience

6,780 satisfied customers

Specialities include: Auto Body Technician, Heavy Equipment Repairs, Heavy Duty Engine Repairs, Brake and Transmission Repairs

Hey, sorry to hear you are having these problems. I know that can be frustrating. Hopefully, we can get you back to work quickly.  I see no one could help you earlier, and I hope this is not too late to be helpful. Please note that I am not set up for phone calls, you can ignore the site pop-ups. We can post to this chat as much as you like to work through this issue.

I am sorry, that number is ***** matching any code I can find. Can you upload a picture if the code and tell me how you accessed it?

Are you seeing other warning lights?

Do you have any seat belt or operator warning lights on?

Please post a picture of any lights you see when trying to operate the machine.

Thanks, Don

Thank yo for responding Don.
I'll have more info when i return to this 2011 CAT 950H Loader today, also seems like the parking brake ( push - pull type) has an issue, it's loose, i'll try to get some pics and or more info in the coming hours, as i'm preparing to go where this loader is parked.
I went to the loader today, we weren't getting a charge from the alternator, so we replaced it today..Anyway,- would you happen to have a diagram of the hydraulic vavle area, and what valve and solenoid operates what -??
Also has 2 nitrogen filled hydraulic accumulators, i do not want to touch these, but what exactly does those do for this system ?
Serial # - CAT0950HCK5K03505

Here is the hydraulic diagram for your loader. (Image below)

(###) ###-####nbsp;Main Control Valve (3-Function, With Ride Control) Schematic for 950H and 962H
(###) ###-####nbsp;Main Control Valve (3-Function, With Ride Control) Schematic for IT62H
(1) 261-0018 Control Valve (Tilt) for 950H and 962H
(1) 256-8660 Control Valve (Tilt) for IT62H
(2) 261-0019 Control Valve (Lift)
(3) 253-4026 Ride Control Valve
(4) 261-0017 Control Valve (Auxiliary)
(5) 271-9248 Valve Manifold (Inlet)
(6) 269-9398 Valve Manifold (End Cover)
(7) 262-5265 Solenoid Valve (Drift Reduction) (Ride Control Accumulator)
(8) 332-1987 Relief Valve (Line, Tilt)
(9) 313-7668 Solenoid Valve (Pilot Proportioning)
(10) 252-0737 Solenoid Valve (Ride Control, Lift Cylinder)
(11) Ride Control Accumulator
(12) 272-2334 Relief Valve (Line)
(13) 225-0300 Solenoid Valve (Hydraulic Lockout)
(14) 245-2975 Pilot Oil Accumulator (Dead Engine Lower)
(15) 112-1817 Manual Valve (Dead Engine Lower)
(16) Compensation and Load Check Valve
(17) 4T-7581 Relief Valve (Ride Control)
(18) 282-4349 Pressure Reducing Valve
(19) 193-1665 Pressure Reducing Valve (Signal Duplication)
(20) 247-8632 Relief Valve (Load Sensing Signal)
(21) 260-6737 Valve Stem (Tilt) for 950H and 962H
(21) 256-8660 Valve Stem (Tilt) for IT62H
(22) 260-8590 Shuttle Valve Load Signal Resolver
(23) 260-6738 Valve Stem (Lift)
(24) 235-6157 Shuttle Valve
(25) 194-1723 Check Valve
(26) 252-0737 Solenoid Valve (Ride Control On, Off)
(27) 260-6736 Valve Stem (Auxiliary)
(28) 254-5789 Relief Valve (Pump Margin Pressure)
(A) Hydraulic Tank
(B) Pump Port
(C) Tank Port
(D) Tank Port
(E) Signal oil to pump
(F) Drain for load sensing relief

The accumulators are below the valve are for ride control (Cushion ride)

(see image)

Here are your basic controls

The accumulators by the filter are for the brake and parking brake.

I so want to thank you for all your input, this helps my so much, This machine was purchased without getting any service or parts manuals. our parts dept. is a little overwhelmed at the moment, like many other municipalities, so this really helps. i will get back to you - and keep you posted on my progress, again thank you !!!

You're welcome! Glad I could help.

Please note, these questions are only open for a few days. The links may fail to connect me after that.

Please keep in contact to keep this question active.

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