I don't know what you mean by " specs ' for p\s fluid. If you are talking about what to use,I suggest Power Steering fluid. You can substitute trany fluid,but it has a tendency to foam. In " normal " steering systems this isn't awful,but in a rack and pinion system it could cause problems.
Fluid that meets or exceeds: GM specs 9985010, Ford specs ESW-M2C128-C or Chrysler specs MS-5931...
ATF+4 transmission fluid.ATF+4 transmission fluid.
they are both hydraulic fluids tranny has a dye but depends on manufacturer specs
go to the library and get a chiltons repair manual from 67 to get those specs.
PSF that meets or exceeds GM specs #9985010.....
In cars manufactured before 1980, the specs for ATF and Power Steering Fluid were much the same. Now, the specification between PS fluid and Dexron VI are very different and substituting one for the other can damage the transmission.
Fluid that meets or exceeds GM specs # 9985010, Ford ESW-M2C128-C or D and Chrysler # MS-5931F...
Back in the 80's or earlier you could use automatic transmission fluid in the power steering pump. But the newer cars use a different fluid altogether. As in the case of Honda you must be sure to use "only" fluid specifically labeled to meet Honda specs. Please ck your owners manual for the proper fluid.
This is all I can find. I would think your Warngler is the same but it may not be. Do not use ATF fluid. You can purchase a generic fluid as long as it meets the Mopar specs. Mopar®P/N 04883077 Hydraulic fluid / Power steering fluid (MS5931)MS5931 IS THE ONLY FLUID THAT CAN BE USED FOR THE POWER STEERING SYSTEM. NO EXCEPTIONS! Important note:The factory fill power steering fluid for all 1999-2004 Grand Cherokees is a unique fluid, MS5931. ATF+4 (MS9602) should not be mixed or used as a "topping off" fluid on the Grand Cherokee WJ. All WJ models should be serviced using ONLY the special MS5931 fluid. ATF+4 is NOT an approved Power Steering Fluid and should never be used under any circumstances. Read your owner's manual, look on the fill cap, or call your local Jeep dealer to be sure.
There probably isn't an easy procedure to determine your root cause without taking some time to properly diagnose the concern. However, I would assume that since you say the fluid is not returning that it means that the vehicle probably has no steering assist. The proper diagnosis would entail a aperatus simply called a power steering analyser that is installed between the fluid pump and the pressure line to the steering gear. the analizer has a flow control valve, flow meter and a pressure guage that when used correctly will test the fluid pumps ability to provide pressure, and volume within set manufacture specs. If your pump is working correctly and is able to attain fluid from the reservior (no hose blockage) than the pump would probably pass its performance tests. Also, a concern could exist after the pump. for instance, there may be a fluid blockage within the steering gear, fluid lines, or fluid cooler after the fluid flows from the pump. If this condition is the problem the steering analizer will show abnormal high pressure anytime the engine is running. This may be noticeable audibly if with the engine running the power steering pump may have a constant growl or whine.
I am not sure what specs you need, are you looking for engine rebuilding torq specs, transmission rebuilding torq specs, service intervals and fluid specs, load capacity specs, etc?
Power steering fluid specs for Volvo 1998 and older can use Dexron IIE or Volvo PN 1161317 2001 and newer may only use Volvo PN 30741424 or 1161529 (same product). Alternatives to the genuine Volvo fluid are Pentosin CHF11S, VW/AUDI G002000/G004000, and respective BMW, SAAB, MERCEDES, PORSCHE fluids that are based off Pentosin CHF11S. BG compatible part number for this fluid is 344.