Here's a visual step by step guide on how to rebuild an OEM ZF power steering pump for E36 M3 and other models. The OEM rebuild kit is 32411135880, used in E30/36/28/34/24/32/31/Z1
https://i.ibb.co/wYCrBSM/l-IMG-1721.jpg
https://i.ibb.co/rxVT5DZ/l-IMG-1722.jpg
You'll notice from here down the aluminum went from corroded to like new. The casing was glass bead blasted with 300grit media.
https://i.ibb.co/HKBf0mt/l-IMG-1725.jpg
https://i.ibb.co/dc5ZRp3/l-IMG-1726.jpg
https://i.ibb.co/DQ1tZg8/l-IMG-1727.jpg
https://i.ibb.co/GvyxgC3/l-IMG-1728.jpg
https://i.ibb.co/Lkwr0Rn/l-IMG-1731.jpg
Pay very close attention to which way you install the veins. The smooth edge should be outward. If you get this wrong you will like damage the pump.
https://i.ibb.co/ccGGgDT/l-IMG-1733.jpg
https://i.ibb.co/vQ59VLc/l-IMG-1734.jpg
https://i.ibb.co/RymgLxv/l-IMG-1735.jpg
https://i.ibb.co/xLwqkrR/l-IMG-1736.jpg
https://i.ibb.co/rHcMS3P/l-IMG-1737.jpg
https://i.ibb.co/jhhkMtF/l-IMG-1738.jpg
https://i.ibb.co/CWFT8MY/l-IMG-1739.jpg
https://i.ibb.co/h8zXs5b/l-IMG-1740.jpg
https://i.ibb.co/DzywFyH/l-IMG-1741.jpg
https://i.ibb.co/qCWV2FR/l-IMG-1744.jpg
https://i.ibb.co/DgFxhVx/l-IMG-1745.jpg
https://i.ibb.co/Xy6RgKw/l-IMG-1746.jpg
https://i.ibb.co/kBJHnjj/l-IMG-1747.jpg
Author: Braymond