Power Steering noise and problem

[Dave2018]

Appreciate all replys. The power steering on my 1152A1 started making noise and not as smooth steering.
The truck is almost to 2000 miles total. I had fluid in my accumilator sight glass. Took off the top and it had fluid mostly full also.

Have not had any leaks or pump issues.

Getting my ducks lined up before just pulling parts...turbo trucks a pain sometimes.

Its really ramping up. Also my brakes are good on fluid.
Thanks

 

[Dave2018]

Appreciate all replys. The power steering on my 1152A1 started making noise and not as smooth steering.
The truck is almost to 2000 miles total. I had fluid in my accumilator sight glass. Took off the top and it had fluid mostly full also.

Have not had any leaks or pump issues.

Getting my ducks lined up before just pulling parts...turbo trucks a pain sometimes.

Its really ramping up. Also my brakes are good on fluid.
Thanks

I thought about bleeding the pump but have not found a plug. Looking.

 

[NDT]

You must follow the TM instructions to a T. Jack up front end and turn wheel lock to lock 500 times or something like that to bleed air.

 

[Dave2018]

Woof.....kind of figures. Thanks

 

[m38inmaine]

40 times lock to lock holding 5 seconds at each lock. You may also have a bleeder at the fan valve, that is the highest point in the system. I ended up replacing the PS pump with the same issue.

 

[Autonomy_Lost]

You must follow the TM instructions to a T. Jack up front end and turn wheel lock to lock 500 times or something like that to bleed air.

Laughed out loud at five HUNDRED times

 

[ikoinu]

Just a thought, check the alternator bracket that the power steering pump is attached to (only if you have the smaller alternator).
I was having a problem with mine, bought a PS pump and found out the bracket had broken. Ended upgrading to a new 200 alternator, as I couldn't find the bracket for the smaller one.

Likely not your issue, but thought I'd put it out there.

 

[Mogman]

Appreciate all replys. The power steering on my 1152A1 started making noise and not as smooth steering.
The truck is almost to 2000 miles total. I had fluid in my accumilator sight glass. Took off the top and it had fluid mostly full also.

Have not had any leaks or pump issues.

Getting my ducks lined up before just pulling parts...turbo trucks a pain sometimes.

Its really ramping up. Also my brakes are good on fluid.
Thanks

[B]ikoinu[/B] has a great point, you have not described the noise nor have you said if the belt was loose or tight, failing brackets/mounts for various components can cause noise and a loose belt which can effect the steering.
Bad or seizing idler pulleys can cause all kinds of symptoms
So is it a "buzzing" sound like air in the pump

Skip to around 1:07
Or is it rattling, squeaking, screaming like a Banshee??

 

[Dave2018]

[B]ikoinu[/B] has a great point, you have not described the noise nor have you said if the belt was loose or tight, failing brackets/mounts for various components can cause noise and a loose belt which can effect the steering.
Bad or seizing idler pulleys can cause all kinds of symptoms
So is it a "buzzing" sound like air in the pump

Skip to around 1:07
Or is it rattling, squeaking, screaming like a Banshee??

Hello,
I should have put more. The belt is fine not squeeling. The alt brackets were tightened...Have not had any leaks. And the noise is a load pump noise.
Wanted to add that since this started when its making a lot of noise you can feel some vibration from the brakes. I will re bleed using tm guide. Hope its not my booster for the brakes. Can feel a little vibration on the booster where the low pressure leaves the booster pump on the brakes.

The tm says to turn engine off and then...??...to turn wheels fully to the left to start bleeding.
I think something may snap doing a full left turn of the steering wheel with no pressure.
Will update again.
Thx
Dave

 

[Mogman]

It is not likely the booster would give you pump noise and rough steering, me personally I would much rather replace a booster than a pump.
Have you replaced all the o rings in the high pressure hose fittings and all the return hoses?
If the system was working fine and not low on fluid and then started acting as if it had air in the system than I would look for a failure in the hoses/connections or a failed pump.

 

[Dave2018]

I agree on that. Fluid level was perfect though had some air mixing. Its possible it could be sucking up some air....
Will hit it again tomorrow.
Dave

 

[Thunderbirds]

The tm says to turn engine off and then...??...to turn wheels fully to the left to start bleeding.
I think something may snap doing a full left turn of the steering wheel with no pressure.
Will update again.
Thx
Dave

.
Most important: Jack the truck's entire front end and put on jack stands. Then you don't have any resistance while turning...

 

[Dave2018]

.
Most important: Jack the truck's entire front end and put on jack stands. Then you don't have any resistance while turning...

Going to do that tonight. But wont be trying the full left turn with no pump pressure. Steering column may not be tuff enuff.

 

[FlameRed]

Going to do that tonight. But wont be trying the full left turn with no pump pressure. Steering column may not be tuff enuff.

Hold on - you do NOT run the engine during this procedure! Make sure the pump is to the full mark. Turn stop to stop 40 times, stopping for a few seconds at both the right and left stops. Check the level once or twice during the procedure.

Don't get lazy and do less than 40 and don't rush and not pause for a couple of seconds at each stop as that is where the air bleeds out.

It should be very easy and should not make any weird noises as there is no load with it jacked up.

 

[Thunderbirds]

Going to do that tonight. But wont be trying the full left turn with no pump pressure. Steering column may not be tuff enuff.

You will be surprised how little effort it takes when the wheels are off the ground. Almost none at all...

 

[Dave2018]

Hold on - you do NOT run the engine during this procedure! Make sure the pump is to the full mark. Turn stop to stop 40 times, stopping for a few seconds at both the right and left stops. Check the level once or twice during the procedure.

Don't get lazy and do less than 40 and don't rush and not pause for a couple of seconds at each stop as that is where the air bleeds out.

It should be very easy and should not make any weird noises as there is no load with it jacked up.

Yeppers... they did say to turn the engine off. I probably would have restarted it before the procedure. Thanks.

 

[sue]

And some people make the mistake of using power steering fluid

 

[Jinx]

And some people make the mistake of using power steering fluid

What is the preferred brand of fluid to use? My truck shows it's full, but I like to keep fluids on hand in case I need them.

 

[Coug]

What is the preferred brand of fluid to use? My truck shows it's full, but I like to keep fluids on hand in case I need them.

No specific brand; you just need to make sure that the ATF you use has a DEX III rating on it (most DEX/MERC fluids are DEX III rated, but verify on label)

DEX VI is the replacement for DEX III, but that is specifically for automatic transmission applications. In non automatic transmission applications, DEX III is still the recommended fluid by GM.


You can still use DEX VI, as apparently the military does put it in power steering systems and transfer cases in the newer trucks, but GM had issues with higher failure rates of transfer cases after they came out with DEX VI, and put out a bulletin saying it is only for the automatic transmissions, and had a part number for manual gearcase oil, which was basically just repackaged DEX III. Military just prefers to only stock a single fluid for inventory purposes, and doesn't worry about the increased failure rate since most of their trucks aren't driven enough to matter.

 

[Jinx]

Okay, thanks Coug.