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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Bendix Power Steering box

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Old Oct 8, 2025 | 04:01 AM
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Bendix Power Steering box

Hi All,
Hope you are all still living the dream!
My '86 F100 has a Bendix Power Steering box (AKA Bendix Bishop, Bishop Kirby) which is in good condition, almost no freeplay at the steering wheel, but has a leak at the Pitman Arm connecting shaft. Yes it is right hand drive, I come from the land down under!
Hoping someone out there might know if I can replace the seal on the Pitman shaft without removing the box.
Can the seal (and I assume lower bush/bearing) be replaced without dismantling the whole box?
Thanks

 
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Old Oct 8, 2025 | 07:11 AM
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Apparently you can replace the Pitman Arm shaft seal without removing the steering gear box (post #22).

https://www.ford-trucks.com/forums/9...uild-able.html
 
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Old Oct 8, 2025 | 07:35 AM
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Yes you can, if you can get the pitman arm off. They are stuck sometimes.
 
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Old Oct 8, 2025 | 07:51 AM
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They say you change the seal with the left hand box still in the truck but I have not heard of anyone doing the bushing?
I would guess it is a thin bushing so what could you grab it with that would fit between the bushing and shaft?
If the box was apart you might be able to drive the bushing out but I can see that still being a job.

Did I see a post that there were 2 seals on the output shaft on our boxes?
Dave ----
 
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Old Oct 8, 2025 | 08:00 AM
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Originally Posted by FuzzFace2
They say you change the seal with the left hand box still in the truck but I have not heard of anyone doing the bushing?
I would guess it is a thin bushing so what could you grab it with that would fit between the bushing and shaft?
If the box was apart you might be able to drive the bushing out but I can see that still being a job.

Did I see a post that there were 2 seals on the output shaft on our boxes?
Dave ----
I thought the original boxes did not have a bushing? And the blue and red top rebuilt box people machined and added a bushing and this was their claim to fame?
 
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Old Oct 8, 2025 | 08:22 AM
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Originally Posted by Franklin2
I thought the original boxes did not have a bushing? And the blue and red top rebuilt box people machined and added a bushing and this was their claim to fame?
I dont know if it is a bushing or if it is the box housing that the shaft makes out of round and causes play, I would think bushing would have been used.

The Blue Top / Red Head boxes they machine that area and fit a bearing not a bushing.
I love my Red Head box, no issues in the six years the truck has been on the road.
Dave -----
 
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Old Oct 8, 2025 | 12:56 PM
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They don't specify which, but they do say some boxes do not have bushings or bearings.

https://redheadsteeringgears.com/aboutprocess

Stands to reason they would do this. They want you to buy a new truck after a few years, not keep it for over 30 years like we are.

Here is an interesting article about GM. Don't laugh, I am sure Ford is doing the same thing.

https://www.thetruthaboutcars.com/ca...sable-44514856
 
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