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Old 04-29-2003, 02:36 PM
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EricSilver EricSilver is offline
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Join Date: Mar 2000
Location: Fairfax, VA
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Checklist: PS Pump Re-Seal

This weekend I want to reseal my leaky PS Pump.

Below is a checklist of steps lifted from other threads. Is it comprehensive enough? Is it as simple as it sounds? And how long should it take? (I am predicting about 2 hours).

Any helpful suggestions would be appreciated.


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PUMP REMOVAL
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Remove low pressure hose from steering pump
Loosen all mounting bolts on pump.
Loosen high pressure side hose fitting
Remove pump from car

Remove pulley by backing lock nut off and using a sharp blow with a hammer to nut will cause pulley to pop loose from key
Remove nut and pulley

Remove top of reservoir and take out spring and filter
Remove spring clip from back of pump
Remove back cover

Remove guts from pump:
* Short fat spring
* Back 1/3 section
* Middle section
* Shaft section with 10 little vane sections
* Two O rings
* Two pins

Remove keyway from front of shaft
Push shaft section out the back of the pump
Remove old front seal


============
REASSEMBLY
============
Install two large O rings
Insert pins
Insert shaft
Insert second section
Insert all the vane pieces into first section
Insert third section
Drop in spring
Place back in place and push in to start spring clip
Seat spring clip
Coat bushing with a thin layer of grease
Flip pump over and use a deep well socket to seat new bushing
Add filter
Add spring
Install reservoir top
Re-attach pump to mounting bracket
Attach low and high pressure hoses

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WARNINGS
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Regarding Stator and Vanes: ... you must put them back in the same direction to avoid damage. Mark everything as you take it apart. If you don't, well.... Just mark it.
__________________
2008 E350 4matic / Black/Anthracite

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Gone but not Forgotten:
2001 E430 4matic, 206,xxx miles, Black/Charcoal
1995 E320, 252,xxx miles, Black/Grey
1989 260E, 223,00 miles, Black/Black
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