M1152 Just delivered but no power steering or brakes. Brake light on.

[Mattguy]

My 1152 was just dropped off by shipper and faint power steering once in a while and no brakes. There is a whine coming from pump. Fluid is filled on reservoir. Brake light is on. Would a clogged filter in the power steering reservoir cause this symptom or does it sound like bad pump? It's too dark to work on now and will save it for weekend. Just trying to get ideas. Nothing in the GP inspection mentioned brake light on or no brakes or power steering. I wonder if I have any recourse with GP?

 

[Maxjeep1]

My brake light stayed on and it was the emergency brake being so tight. I adjusted it and it went off and hasn’t come back on since

 

[Mogman]

Are you saying NO brakes or no power assist on the brakes?
It is possible the hydro boost is bleeding all the pressure off of the pump.

 

[Mattguy]

Are you saying NO brakes or no power assist on the brakes?
It is possible the hydro boost is bleeding all the pressure off of the pump.

No power assist or power steering. Once in a while the steering feels like it's trying.

 

[Mogman]

I would guess the first thing to try is the bleeding procedure, not sure where it is, I believe it mostly consists of jacking the truck up and going from lock to lock many times.
Also you can unplug the brake light wire from the brake equalizer block, next to the master cylinder to see if the light is from the service brakes or the parking brakes.

 

[Mattguy]

I would guess the first thing to try is the bleeding procedure, not sure where it is, I believe it mostly consists of jacking the truck up and going from lock to lock many times.
Also you can unplug the brake light wire from the brake equalizer block, next to the master cylinder to see if the light is from the service brakes or the parking brakes.

I haven't found anything about bleeding the system with the external reservoir. The light being on was due to parking brake like you had mentioned. I did notice after pulling plug off of the reservoir it was foamy. So that leads me to believe there is air in the lines. I did jack up front of truck and went left to right about 20 times but no change.

 

[Action]

I haven't found anything about bleeding the system with the external reservoir. The light being on was due to parking brake like you had mentioned. I did notice after pulling plug off of the reservoir it was foamy. So that leads me to believe there is air in the lines. I did jack up front of truck and went left to right about 20 times but no change.

You can undo the clamp and remove the lid from the reservoir to watch the fluid. Have engine running and hold the wheel at side locks for a couple seconds each time. If there is foam, there is air. You can do lock to lock more tgan 40 times.

 

[Mattguy]

You can undo the clamp and remove the lid from the reservoir to watch the fluid. Have engine running and hold the wheel at side locks for a couple seconds each time. If there is foam, there is air. You can do lock to lock more tgan 40 times.

Thank you will try in morning. I can take top hat off reservoir after removing clamp and fluid won't shoot out?

 

[rcamacho]

Top of the reservoir should be off only when the engine is off.
40 tour s lock to lock by hand with both wheels off the ground. My system was 1qt low and took about 200 to get all the air out.


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[Action]

Top of the reservoir should be off only when the engine is off.
40 tour s lock to lock by hand with both wheels off the ground. My system was 1qt low and took about 200 to get all the air out.


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Why cant we have the lid off with engine running? The reservoir should only be half full.

 

[rcamacho]

Fluid will likely spurt out center of the reservoir and make a mess


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[Action]

Fluid will likely spurt out center of the reservoir and make a mess


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It cant spurt out. There is a filter sitting in there with a metal top.

 

[rcamacho]

It cant spurt out. There is a filter sitting in there with a metal top.

Which is only retained by the cap and spring…


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[Retiredwarhorses]

The engine can be started and run with reservoir lid off, do it all the time on bleeds, just don’t turn it off, that’s where the ATF bath occurs, reinstall the lid prior to turning it off.

 

[rcamacho]

Thanks
I stand corrected. I think there may still be some air in the 1151 system. Perhaps a loose line…


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