Howdy to all,,, On my D14 Industrial, it has been trouble free on everything I asked it to do til recently. The only'ist trouble I've  had was the the forward-reverse handle was not staying in position and Dr Allis was right on with this trouble shooting idea,,,,,!!!!

 Many Thanks,,,Dr.

 I been working on re-shingling my house after a mother of a BAD hail storm, so I took the backhoe off to allow the tractor to get in close quarters to lift the new shingles up on the roof and was working great when the dang Power Steering went all the way south!!!!!!!!!

 Ain't no way ole Joe is gonna carry them HEAVY bundles via the ladder!!!!!!!

It takes me with BOTH hands to turn even a fraction and takes a long time to turn with 8-9 bundles of shingles n the loade

 I checked the Power Steering level but it just needed bout 1/2 quart of fluid,,,,?

 Does anyone know if there is a relief type apparattus on the pump that may be by-passing and causing pressure loss,???

 NO,,it did not lock up,,it is chain driven off the front of the engine. I had it running and removed the fill plug and you could see fluid circulating a little,,,is kinda why I think the pump is recirculating the fluid and not getting to the steering,,,,???

I would still look at discharge pressure from the pump... and then see if the steering motor has flow out of the discharge hose....... either no flow... or as you said, somehow it is bypassing...... or was the oil low and it got air in system..... power down on the bucket and lift the tires an inch and see if you can steer.. work it back and forth ??

 CHIT,,it finally dawned on me that I was FOC on relaying my info,,,,,,

 OK, the power steering on the D14 has the pump bolted on the RIGHT side of engine.   "IF" I remember correctly (I tore the engine down completely) when I rebuilt it,,,UMMmmm,,,,5-6 maybe 7 years ago,,??

 And I believe the PS pump, Distributor and governor are all shaft driven from a gear off the camshaft or the crankshaft and splined. This Power Steering system is separate from the main hydraulic system.  The pump for the backhoe and loader is a

  chain driven pump driven by the crankshaft at front of engine.

 To Thad's question, I did install a filter on the return line from the backhoe to the main reservoir. So, the Power Steering system (Factory) does not have a filter.

 While tractor is running, I can see some movement in it's reservoir at the fill plug,,,,,??

 I can vaguely remember that there IS a "thingie" at the steering reservoir that takes pressurized oil from pump and turns the apparatus INSIDE the reservoir in either direction, maybe that is where the relief valve is located,,?? The reservoir is where the relief valve would likely be,,,right,,,??

 Hey Mack,,,Thanks for the comment. Yes, that is the system that is on the D14. Do you know if the relief valve (Bypass) is at the reservoir,,,? I'm gonna  use the loader to lift front end to see what power steering does then,,,,,It WILL turn if you keep tractor moving, but you got to use BOTH hands and work HARD,,,,

Did you by chance get an I40 or I400?  Those had a different steering set up from the D14.  The parts books for those and the I60 and I600 are at Minnpar's site.

https://minnpar.com/manuals3.aspx?FName=ALLIS%5FCHALMERS%5FCDS%5FPARTS%5FMANUALS&SFName=ALLIS%5FCHALMERS%5FWHEEL%5FTRACTOR%5FPARTS%5FMANUALS" rel="nofollow - https://minnpar.com/manuals3.aspx?FName=ALLIS%5FCHALMERS%5FCDS%5FPARTS%5FMANUALS&SFName=ALLIS%5FCHALMERS%5FWHEEL%5FTRACTOR%5FPARTS%5FMANUALS

 Well, Thad,,that many years ago when I first started the rebuilding of the tractor I was told by several people here and other tractor forums that it was an industrial model because of  #1 the Transmission oil cooler, #2 the Power Director being on Left side #3 No 3 point #4 No PTO and no provision for belt pulley. Also has the heavy duty radiator. I just been quoting what I was told,,,,,??

 Hey Steve, the power steering reservoir is the big cast "front Support". If I remember correctly, the power steering pump and the distributor and the governor are all driven on a shaft that is itself driven by a gear off the camshaft,,,I believe that is correct,,,,but I could be wrong as it was a few years I been into it,,,,

 I'm gonna see where I can tee into the discharge line off the pump to put a pressure gauge there to see if pressure is fluctuating,,,,? Also look into the relief valve at pimp.

Thad in AR. wrote: On mine the fill port behind the grill is plumbed over to the loader frame reservoir.

HMMMmm,??, Thad,,I'm havein a bit of trouble visualizing the oil fill being plumbing over to the loader frame reservoir.  The I600 has a 160 engine which is same engine as my D15 Series II had and it also had the front quadrant which was used for the power steering Only,,??. The loader frame reservoir was used only for the hydraulics on tractor. Maybe the I600 was built to use the hydraulic oil from the frame reservoir,,,as well for the power Steering,,??

 "IF" such is the case,,,maybe a tap into the line from the PS pump om mine FROM the front mounted hydraulic pump would improve my Power Steering,,,,,,??

 Think I'll post this "wild hair azz Idea"  by Dr Allis,,,,then run and hide,,,,,

 Chit,,the more I think bout this,,,the MORE I like it,,,,

 Update,,,!!  Well,,I'm now pretty sure the power steering on the D14 has a REAL issue,,,, I was moving the tractor around with no load on loader, to get a flat fixed and that SOB was taking BOTH hands to turn it as long as tractor was moving,,!! Could not turn wheel if it was setting still,,!! I KNow fluid level is good,,!!

 JEEEZE,,I hate thinkin bout having to remove that dang pump way down in there,,,,

Anyone gots a magic wand,,,??

Is it better ? I waved my wand ,best that I could...

have a crazy idea....from looking at the parts book pictures

if you raise the front axle up on stands, disconnect the hoses at the steering cylinder, you should be able to manually steer.

from the book the cylinder has a rack that moves an 'idler' gear that then moves the 'regular' stuff.

PS..you'll get some oil from the cylinder moving,so be prepared..

If it turns nice it's NOT mechanical, but 'power ' related...pump,hoses,valve, cylinder.

If it's hard...gotta be mechanical..

hope this helps.. can post/send pix of the guts if need be.....

DrAllis wrote: Technically, you could disconnect the output/pressure line and dead-head a 2,000 psi gauge into it. Start the engine and at half throttle or more, it should make 15 to 1600 psi. If it does, I'd assume the pump is OK. If not, the pump has issues. Pump OK ??   A flow meter is best, but I think if this test passes, the pump must be good. Then, the steering control valve isn't sending pressurized oil to the hydraulic ram, or the ram itself (or the rack pin) is the problem. I've never had a D-14 shear off the rack pin, but when a D-17 does that, it will power steer to the right and not to the left.

 Well Most Thank You's Dr Allis,,,I've got 3 contractors waiting on me and the D14 for just two more days lifting shingles up on the roof , so I'm gonna tell the dude that we HAVE to lift all the remaining shingles up TODAY,,so I can fix my tractor,,,,!!

 There are some tubing unions right where the lines turn into the steering control valve, so I can install a pressure gauge, which I happen to have in the range needed. Will do that this PM soon as we get the rest of them friggin shingles,,, This does it sporadically as it was operating in both directions just like new after I drove it after getting a flat fixed.

 Hey Jay,,,we gonna have to tweak that magic wand a little,,,,,maybe soak it in some Black Label,,,?

Black Label ??? yeesh, I'm an Ol' Vianna guyFriend got me hooked on that, as no one would drink them..more for us !!!!

 Well, a bit of an update,, I drove the tractor to the trailer to get another load of shingles and the power steerin was working many wonderfuls, turned engine off to add fuel and after that I had to use both hands to turn the steering wheel,,!!  CHIT,,had a heck of a time lining tractor to the trailer to load some shingles,,,!!  Shut engine down, loaded the shingles and fired that mother up and,,,,and,,,the frigging power steering started working again,,,and while it was hard steering with the load,,i could still turn the wheel with one hand. Tomorrow will be the last day we need the tractor for the shingles, so, I'ma gonna add the pressure gauge on the pump discharge line,,,,and you just watch,,,,it prolly won't do it for a week,,,,!!!

 Took a peek at the hellatious job it fixin to be in trying to remove the pump,,,, might be easier to pull the friggin engine,,,,,,

MACK wrote: Still sounds like low on oil or sucking air.                  MACK

  "Something" is going on with the Power Steering on the D14 that is sporadic. I took the grill off so I could see the fluid level and there is some circulation happening in there but it still will not turn the wheels even with no load but then after a few minutes,,,it will work just fine. Fluid level is OK and do not see any frothing of oil,,?  I raised the front end with the bucket and turned the wheel from all left to all right, then let it down and  it "may" work or not,,,,?

 I'm gonna install a pressure gauge on pump  discharge line today and see if pressure indication happens when it does not work,,,This Chit is bout to drive me Batty,,,!!

 OK, Thanks a bunch, Guys,,,As usual in this little old burg where I live,,,you can't ever find what you need, so I'm gonna make a quick trip to Roswell to get some  tubing unions and some extra tubing. I disconnected the outlet tubing line off the pump and there ain't no way I could bend it out the way to install the gauge right on the pump discharge. ( 2000# pressure gauge is 4 1/2")   Simplest is to move the line out the way a little and install a "standpipe" of about a 12" piece of tubing with fittings on each end to screw into the pump and other end for the pressure gauge.