Power Steering Pump - advice

[gast]

Hi all,

The previous owner of my '69 300sel (W109) changed the suspension from air to spring. However, the "two in one" air pump (for the suspension) and power steering pump was not changed. The ps pump is now leaking oil quite badly and I am considering taking out the "two in one" pump and replacing it with a new ps pump from w108 or 114/115. Does anyone know if they fit? What are their part numbers.

Q2. If I were to repair the current pump to fix the oil leak, can I disengage the air pump so that only the ps pump at the back runs and the air pump doesn't? Do you think this will take some stress off the engine? Thanks in advance.
- Han

[ctaylor738]

Just for grins, I looked up a '69 300SEL at Partsshop, and they stock the front seal for less than four bucks. There is a very good chance that this will fix the leak. It does have the same part number as the seal for 114 pump.

Sorry I can't help you on your second question, though.

[Tomguy]

For relieving stress: I really doubt it, I mean since your air pump isnt doing anything, it probably isn't stressing the engine a whole lot anyway.

FYI: I thought i needed a new seal too for mine, it was leaking quite badly. But I took the hoses off, bled them out, put new clamps on and tightened them well, and now it doesnt leak at all - it wouldnt hurt to try that first!