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Buick Grand National Steering Box Build - Straight Arrow

148 Steer 08 Z
The pitman nut gets a uniform... 
   
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148 Steer 08 Z
The pitman nut gets a uniform micropolishing so it slides smoothly in the bore. The pitman shaft and input shaft are polished in the areas where the seals ride for smooth, leak-free operation.
148 Steer 09 Z
The side cover supports the... 
   
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148 Steer 09 Z
The side cover supports the upper end of the pitman shaft, and after hard use, the bore can distort. If Lee's go/no-go gauge bottoms out in the side cover, it's worn too much to use.
148 Steer 10 Z
Valenzuela measures the drag... 
   
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148 Steer 10 Z
Valenzuela measures the drag on the front bearing/seal to verify it's within 4-6 lb-in. Turning the adjuster plug with a spanner wrench preloads or unloads the bearing.
148 Steer 16 Z
The Saginaw power-steering... 
   
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148 Steer 16 Z
The Saginaw power-steering pump is simple in operation and tough as nails. The critical parts are the rotor (A) and liner (B) and flow-control valve (C).
148 Steer 11 S
Hutchinson lightly sands the... 
   
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148 Steer 11 S
Hutchinson lightly sands the bottom of the liner to promote a good seal inside the pump.
148 Steer 12 Z
Hard use really hammers the... 
   
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148 Steer 12 Z
Hard use really hammers the thrust plate inside the pump (left). Slight scuffing on the thrust plate (right) is acceptable, but less wear is better.
148 Steer 13 Z
The liner installs one way... 
   
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148 Steer 13 Z
The liner installs one way only--with the arrow-shaped indentation pointing upward. The pump will absolutely not work if the rotor's installed upside down.
148 Steer 14 Z
Another Lee-designed test... 
   
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148 Steer 14 Z
Another Lee-designed test rig confirms the flow-control valve's 1,250-psi cutoff pressure.
148 Steer 15 Z
Hutchinson verifies that the... 
   
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148 Steer 15 Z
Hutchinson verifies that the pump is pushing 2.75 gpm on Lee's in-house dynamometer.
Lee Manufacturing Co.

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148 Steer 01 Z 148 Steer 06 Z
148 Steer 03 Z 148 Steer 04 Z
148 Steer 05 Z 148 Steer 02 Z