Six inches is just not quite big enough. Kent found you need a monster C-clamp for the job!
A BIG C-clamp like this is pretty handy to have around your shop, but it is a must if you plan to open up your 1980s-era ZF aluminum power steering pump.
Large Deep Eight-Inch C-Clamp for Replacing ZF P.S. Pump Rear Seal
$21.00
SKU:
TUL-8INCHCLAMP 
Product Details
Related Products:
$52.50
Currently out of stock.
Late OM616 OM617 Power Steering Pump Leak Front and Rear Reseal Kit
New 4/1/25. Fits later W123 4 and 5-cylinder diesels and W126 300SD with ZF aluminum pumps ( watch video before ordering!!!)
For later 240D 300D 300CD 300TD 300SD Models. Most after 1980, BUT YOU MUST LOOK AT YOUR PUMP BEFORE ORDERING! WATCH KENT'S VIDEO BELOW. You have asked for it, and we have delivered it again.