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Replacing a power steering pump

BarnyardEngineering

BarnyardEngineering

Well-known Member
Location
Rochester, NY
When you need to replace an alternator, it comes with the pulley. The pulley is held with a nut and washer and is easily removed.

When you need to replace a power steering pump, you have to have a special tool to remove the pulley from the old pump and install it on the new pump.

If it were a "to sell you another tool" thing, why aren't alternators set up the same way? Sell you a special tool for the power steering pump. Sell you another special tool for the alternator. Sell you another special tool for the air conditioning compressor.

ONLY the power steering pump needs a special tool to swap the pulley over to the new pump.

Anybody know a technical reason why only replacement power steering pumps don't come with pulleys and why they need a special tool to change them out?
 
The reason for no pulley, is most pumps
have the mounting bolts in the face of the
pump, behind the pulley. Making the
pulley a tight press fit saved
manufacturing processes. Old pumps had a
keyway and threads for a nut, the pressfit
eliminates that.

Old Chrysler Motorola alternators (60's to
80's) also used a similar press fit pulley
and used the same tool as a steering pump.
 

That's why we get the big bucks : ) No complaint here other than you buy a special tool to make life easier and a few years latter the price of it is $4/500 less than you paid for it. That hurts : (
 
The last time I changed an alternator, the
pulley was pressed on. Not bolted. The
replacement didn't even come with a pulley.
Had to retrieve it off of my old one. Was
able to press it off in a press. Then use a
makeshift way to get it back on the new one
with out a special service tool that I
wasn't going to buy. This was on an 05
vehicle.

So, ... not all alternator pulleys are
bolted on.

In general, all pulleys are generally
removable. As to why some are bolted on,
and some are pressed on?? I can't answere
that.

Might have something to do with how the
component is put together. Whether it is
put together from the front side versus the
back.

I don't think selling you special service
tools is thier gimmick. Going back to the
service department at the dealership, I
think is thier broader spectrum, when it
comes to that.
 
Older GM PS pumps can come without a pully, BTDT, 3 times. Add on PS on !00 series Ford tractors
 
Either Volvo or VW used a special tool to remove the pulley from the alternator. I have one now so I'll never need it again.
 
iirc The old Chrysler alt pulleys also needed the special tool to remove and install. To make this
tractor related I also use that same tool to remove cam bearings on the old JD A.
 
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