Car Fix DIY Videos

In this detailed video, we walk you through the complete process of replacing the shift shaft oil seal on a Mercedes 722.270 automatic transmission. This transmission, known for its reliability, was also used in the Porsche 928. If you’re experiencing leaks from your transmission’s shift shaft, this step-by-step guide is for you.

We cover everything from removing the transmission filter to accessing and replacing the old seal, and finally, reassembling the shaft lever. You’ll see close-up shots and clear instructions, making this a DIY-friendly project.

Whether you’re a seasoned mechanic or a first-time DIYer, this video will help you tackle this common Mercedes 722..270 and Porsche 928 maintenance task.

Timestamps:
00:00 Start
00:16 Remove Transmission Filter
00:38 Unplug Neutral Safety Switch
00:56 Remove 5mm Hex Head Shaft screw
01:26 Remove 10mm Tensioning spring bolt & Tensioning Spring
02:24 Remove Shift Selector Shaft – Not Shown Well in video
02:48 Remove 2 -10mm Bolts holding Neutral Safety Switch and remove switch
03:41 Remove Shift Shaft Selector Seal
04:24 Clean All Parts
04:35 Install New Shift Shaft selector seal
05:57 Reinstall Neutral Safety Switch
07:11 Install Shift Shaft Selector
07:58 Reinstall 5mm Hex Head Bolt to hold shaft in place
08:46 Reinstall Tensioning Spring
09:18 Test for proper operation
09:41 Torque all 10mm bolts to 8Nm /5.98 ftlbs
10:10 Plug in Neutral Safety Plug