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  #1  
Old 07-05-2010, 08:32 PM
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Power Steering Pump pressure (again)

Well, after the saga pf the squealing pulleys, you'd think I would be done.. but NOOOO.. this steering is just not right.... and the red 56 has a volare and a remote reservoir pump which works perfectly (actually jumpy in comparison to the green truck)


SO... attack plan..

1. buy a hi pressure guage set ($100) and measure the PS pressure of the mercedes pump... (weak info from a dealer implies 1000psi.. enough)
1a if pressure low, figure out what to do, replace pump...
1b if pressure ok, then try another steering box (second rebuilt on installed already)... maybe a red-head box

2.. replace steering pump with GM style pump
like either of these .. small reservoir, or large reservoir..

maybe replace gear again

Anyone used the small reservoir pump?

Sam
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1955 F100 460/c6, 3.55ls - 436 hp, 489 tq
2012 F350 4x4, DRW, 3.73ls, CC, LB, 400 hp, 800 tq
2013 Keystone Alpine 3720FB 5th wheel. 40', 15,500gvwr
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  #2  
Old 07-05-2010, 09:03 PM
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Maybe? some info:
Plews Edelmann

I've been searching for the past 6-7 yrs for a "Spec" list - even spent several days at the library looking a repair manuals - no joy.
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  #3  
Old 07-05-2010, 09:19 PM
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cool info, thanks..

I would classify this as loose/wander

Vehicle wandering from side to side Front end misaligned Check and align to specifications

Worn front end parts or wheel bearings Inspect and replace affected parts

Unbalanced or badly worn steering gear control valve Inspect and replace affected parts

everything has been replaced.
rubber bushings, ball joints, tire rod ends, idler arm,
pitman arm, steering gear (twice).. hoses,

only thing NOT changed is the steering pump. and it WAS used when I bought it.. 5 yrs ago now I think.. maybe 6.

AND its a weird duck compared to all the other experiments here: Ford, Chrysler, GM

I popped the tie rod ends before Smoky Mountain, and the spindles pivot on the ball joints just fine..

Sam
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1955 F100 460/c6, 3.55ls - 436 hp, 489 tq
2012 F350 4x4, DRW, 3.73ls, CC, LB, 400 hp, 800 tq
2013 Keystone Alpine 3720FB 5th wheel. 40', 15,500gvwr
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  #4  
Old 07-06-2010, 07:31 AM
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Sam,

Way back many a moon ago, back when they overhauled parts at the dealer instead of just replacing everything we used to overhaul power steering pumps. I don't recall the pressures but I do know the the pressure regulators in the pumps were adjustable. I worked on GM stuff which used saginaw pumps. The pressure regulator screw into the back of the pump and is the fitting for the pressure hose. From what I remember you adjusted the pressure by shimming the regulator depth into the pump body.

Bobby
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  #5  
Old 07-06-2010, 07:44 AM
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Quote:
Originally Posted by 4tl8ford View Post
Maybe? some info:
Plews Edelmann

I've been searching for the past 6-7 yrs for a "Spec" list - even spent several days at the library looking a repair manuals - no joy.
You're one studious dude Dick
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  #6  
Old 07-06-2010, 08:00 AM
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Originally Posted by bobbytnm View Post
Sam,

Way back many a moon ago, back when they overhauled parts at the dealer instead of just replacing everything we used to overhaul power steering pumps. I don't recall the pressures but I do know the the pressure regulators in the pumps were adjustable. I worked on GM stuff which used saginaw pumps. The pressure regulator screw into the back of the pump and is the fitting for the pressure hose. From what I remember you adjusted the pressure by shimming the regulator depth into the pump body.

Bobby
if only I HAD a gm pump..

Sam
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1955 F100 460/c6, 3.55ls - 436 hp, 489 tq
2012 F350 4x4, DRW, 3.73ls, CC, LB, 400 hp, 800 tq
2013 Keystone Alpine 3720FB 5th wheel. 40', 15,500gvwr
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  #7  
Old 07-06-2010, 08:31 AM
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You're one studious dude Dick
Not really - I use the concentration needed for research to fight the nerve and muscle pain that I live with.
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  #8  
Old 07-06-2010, 11:11 AM
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Quote:
1. buy a hi pressure guage set ($100) and measure the PS pressure of the mercedes pump... (weak info from a dealer implies 1000psi.. enough)
1a if pressure low, figure out what to do, replace pump...
1b if pressure ok, then try another steering box (second rebuilt on installed already)... maybe a red-head box
Howdy,


I don't where you're going to buy that high dollar gage set but you can go to the Surplus Center and buy the gage below (and just about all the other gages they have for under $20!

This one is $12 + shipping!
Click the image to open in full size.



And if that's not enough pressure or too expensive, you can get the following one for a whopping $7.99!
Click the image to open in full size.



This one is my favorite at $2.95 (I'm cheep according to my wife!!!)
2000psi at full scale
Click the image to open in full size.
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  #9  
Old 07-06-2010, 11:22 AM
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Sam, I'll bring my GM pump (as pictured on the right) to the carshow Saturday in McDade for you to experiment with if ya want. I just have to find it tonight.
Brad
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  #10  
Old 07-06-2010, 12:08 PM
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Quote:
Originally Posted by HT32BSX115 View Post
Howdy,


I don't where you're going to buy that high dollar gage set but you can go to the Surplus Center and buy the gage below (and just about all the other gages they have for under $20!

This one is $12 + shipping!




And if that's not enough pressure or too expensive, you can get the following one for a whopping $7.99!

This one is my favorite at $2.95 (I'm cheep according to my wife!!!)
2000psi at full scale
yeh, and hoses, and adapters, and ...
S & G Tool Aid 34650 Tester - Hydraulics

sam
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1955 F100 460/c6, 3.55ls - 436 hp, 489 tq
2012 F350 4x4, DRW, 3.73ls, CC, LB, 400 hp, 800 tq
2013 Keystone Alpine 3720FB 5th wheel. 40', 15,500gvwr
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  #11  
Old 07-06-2010, 12:09 PM
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Quote:
Originally Posted by fergusonicford View Post
Sam, I'll bring my GM pump (as pictured on the right) to the carshow Saturday in McDade for you to experiment with if ya want. I just have to find it tonight.
Brad
is it press on or keyway (bolt on) pulley?

Sam
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1955 F100 460/c6, 3.55ls - 436 hp, 489 tq
2012 F350 4x4, DRW, 3.73ls, CC, LB, 400 hp, 800 tq
2013 Keystone Alpine 3720FB 5th wheel. 40', 15,500gvwr
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  #12  
Old 07-06-2010, 12:25 PM
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keyway. I have some hoses for it also.
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  #13  
Old 07-06-2010, 12:38 PM
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Quote:
Originally Posted by fergusonicford View Post
keyway. I have some hoses for it also.
I have hoses (same connections).. got to find a serpentine pulley

Sam
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1955 F100 460/c6, 3.55ls - 436 hp, 489 tq
2012 F350 4x4, DRW, 3.73ls, CC, LB, 400 hp, 800 tq
2013 Keystone Alpine 3720FB 5th wheel. 40', 15,500gvwr
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  #14  
Old 07-06-2010, 10:28 PM
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Sam,
You might try searching around some of the sites catering to circle track racing (dirt pavement, etc). Those guys might now how to modify your pump or where to get parts for it. I'm betting the pumps are all the same basic design; a rotor vane pump with some sot of pressure regulator consisting of a spring and disc that restricts the flow.


Good luck with it

Bobby

ps. I always learn tons from your tinkering
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  #15  
Old 07-06-2010, 10:59 PM
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Quote:
Originally Posted by bobbytnm View Post
...

ps. I always learn tons from your tinkering
yeh, tinkering.. if thats what u call it.. troubles is more like it..

course I continue to use part A and V together.. regardless of where they come from!..

Sam
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1955 F100 460/c6, 3.55ls - 436 hp, 489 tq
2012 F350 4x4, DRW, 3.73ls, CC, LB, 400 hp, 800 tq
2013 Keystone Alpine 3720FB 5th wheel. 40', 15,500gvwr
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Old 07-06-2010, 10:59 PM
 
 
 
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