Does leaking PS really trash the air pump? (1 Viewer)

60wag

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Does anyone out there have a plausible theory as to how a leaky steering pump can cause an air pump failure? Can the steering fluid actually get into the air pump? I doubt it. I've had several air pump failures and never had a leaky steering pump. Could it be simply a superstition the has developed due to the high milage of our ancient and poorly rebuilt airpumps? Has anyone ever had a NEW OE air pump die an early death while being bled on by a steering pump? Just wondering.
 

FJ40Jim

The Cruiser Whisperer
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Does anyone out there have a plausible theory as to how a leaky steering pump can cause an air pump failure? Can the steering fluid actually get into the air pump? I doubt it. I've had several air pump failures and never had a leaky steering pump. Could it be simply a superstition the has developed due to the high milage of our ancient and poorly rebuilt airpumps? Has anyone ever had a NEW OE air pump die an early death while being bled on by a steering pump? Just wondering.
The air pump is designed to run dry. If the vanes or seals or slipper springs get oily & sticky, then the vanes don't slide properly, get out of position and jam up the works.

There are small breather holes on the rear plate of the air pump, appx 1/8" diameter. As the air pump spins, some air is aspirated at the breather. As the air moves in & out thousands of times per minute at highway speed, the oil residue from the PS pump will work its way into the pump internals. Then the vanes get oily, start to soften & stick and then {crunch} all motion ceases.

Obviously the AP can fail for a number of reasons, but PS contamination will definitely do it.
 
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Las Vegas, Nevada
Yes, and when the air pump siezes up , there is a hideous squeeling noise and smoke and a horrible smell & and that's when you realize that the same belt drives the water pump. Funny how a .25 cent o-ring left unchecked can unleash so much horror.
 

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