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Power rack and pinion hard to turn

 
mustang76
New User
Posts: 5
Joined: 03/13
Posted: 03/24/13 09:34 AM

Just installed a unisteer power rack and pinion in my 1967 mustang the steering is very hard to turn. Tried everything at my wits end.

must76  

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waynep71222
User
Posts: 58
Joined: 04/12
Posted: 03/24/13 10:23 AM

are the pressure line and the return line installed in the proper location??? probably or it would act really strange.. like whipping the steering wheel back and forth...


which steering pump did you install.  or the stock 67 pump...

is the pump creating pressure????    

if you have a later model ford type pump  with the plastic rear housing...  behind the nut... there is a spring and piston that controls pressure.. could that be stuck .. or assembled wrong..


post which type of pump you have...

lastly.. is the power steering belt at the proper tension.. so its not slipping???


there are 4 mustang and ford magazines on this site...

i think there are some rack and pinion install articles kicking around.. would you like me to find some and post links??

so you can double check????  

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mustang76
New User
Posts: 5
Joined: 03/13
Posted: 03/24/13 11:53 AM

Thanks for your quick response the pump came as a complete kit with the R&P for the 1967 late model mustang (Pump# 8060710) from Unisteer.i follow the directions given for installing the lines, the lower port on the rack  goes to the pump and the top port on the rack to the plastic reservior . The belt ajustment is ok ,i would like to see those articles on the R&P inst.
Thanks,
Must76  

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waynep71222
User
Posts: 58
Joined: 04/12
Posted: 03/24/13 12:49 PM

there are a bunch of them...

you will have to work your way thru them...

http://www.mustangandfords.com/sch/02/rack-and-pinion/articles/?searchSource=Group

what happens when you turn the steering wheel all the way to the end.... can you hear the pump or belt squeal??

this is what's hidden behind the outlet fitting.. there is a spring there also..  

Power Steering Upgrade 1999 Ford F550 Powersteering Rebuild P Pump Poppet  

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mustang76
New User
Posts: 5
Joined: 03/13
Posted: 03/24/13 01:06 PM

Hi,
The wheel is very hard to turn  no noise from the pump or belt.
Must76  

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waynep71222
User
Posts: 58
Joined: 04/12
Posted: 03/24/13 04:22 PM

call the supplier..


or pick up a power steering hose that will fit the pump...

pick up some fittings.. cut the hose.. insert the fittings and a pressure gauge with a needle shut off valve.. then a return line back to the pump...     see if you can create pressure by slowly closing the needle valve...  

you might be able to use something to PINCH off the pressure hose part way to see if it starts building pressure..

how much fluid did it take... is there a possibility that the pump did not prime???

can you see fluid movement when the cap is off..

my mistake.. its a slightly different pump than shown above..

same operation.. those kits come with Saginaw pumps...

0900C15280217fcc




BLEEDING the power steering system with saginaw power steering pumps


The power steering fluid replacement procedure is a two-stage process: first, flushing the old fluid from the system with new fluid and second, bleeding the system to remove any trapped air. The following sequences outline these procedures.

Raise and safely support the front end of the vehicle off the ground until the front wheels are free to turn.
Remove the fluid return line at the pump reservoir inlet connector.
Plug the inlet connector port on the pump reservoir.
Position the fluid return line toward a container (several quart capacity) to catch the draining fluid.
When an assistant fills the reservoir with either the standard power steering fluid or optional cold weather power steering fluid, start and run the engine at idle.
Turn the steering wheel from stop-to-stop.


WARNING
Do not hold the steering wheel against the stops while flushing the system. Holding the steering wheel against the stops will cause high system pressure, overheating and damage to the pump and/or the steering gear assembly.

Continue draining until all of the old fluid is cleared from the power steering system. The addition of another quart of fresh fluid will be required to flush the system.
Turn the engine OFF . Unplug the pump reservoir inlet and reconnect the return line.
Fill the reservoir to the FULL COLD mark.


After replacing the fluid or servicing the power steering hydraulic system, you must bleed air from the system. Air in the system prevents an accurate fluid level reading, causes pump cavitation noise and over time could damage the pump. To bleed the power steering system, proceed as follows.

Begin with the engine OFF , front wheels off the ground and the wheels turned all the way to the left.
Add either standard power steering fluid or optional cold climate fluid to the FULL COLD mark on the fluid level indicator.
With the engine still OFF , bleed the system by turning the wheels from stop-to-stop, but without hitting the stops.


NOTE
This may require turning the wheels from side to side up to 40 times. Keep the fluid level at the FULL COLD mark. Fluid with air in it may have a light tan appearance. This air must be eliminated from the fluid before normal steering action can be obtained.

Start the engine. With the engine idling, recheck the fluid level. If necessary, add fluid to bring the level to the FULL COLD mark.
Return the front wheels to the center position. Verify that the transaxle is in PARK and that the parking brake had been firmly set. Lower the front wheels to the ground. Continue running the engine for two or three minutes.
Test drive the vehicle to be sure the power steering functions normally and is free from noise.


NOTE
Inspect for fluid leakage at the connection points along the power steering system.

Recheck the fluid level. The fluid level should now be up to the FULL HOT mark after the system has stabilized at operating temperature.  

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mustang76
New User
Posts: 5
Joined: 03/13
Posted: 03/24/13 04:43 PM

yes i see the fluid movement with the cap off  

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waynep71222
User
Posts: 58
Joined: 04/12
Posted: 03/24/13 04:51 PM

i added bleeding procedures above..

the chart should be printable..

still could be a stuck valve in the pump...

or some other failure in the system... missing Oring's/sealing rings inside the rack..

improper assembly of the pump.. or the pump pressure relief valve.. shown above... is stuck .. bypassing all the fluid  back into the pump so its NOT building any pressure..

with some duct tape wrapped around your vice grip pliers.. squeeze the pressure hose... see if the pump starts to whine..  

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mustang76
New User
Posts: 5
Joined: 03/13
Posted: 03/24/13 05:32 PM

Thanks i will try these  

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