 Heads up: Reproduction VW 521/4 Tool available, For setting differential backlash and bearing preload on our transaxle |
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| Krieger |
 Jul 30 2026, 10:36 AM
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#1
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Advanced Member  Group: Members Posts: 4,874 Joined: 24-May 04 From: Santa Rosa CA Member No.: 2,104 Region Association: None 
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Over on the Pelican website member, tacobill is making these for sale. You have a choice of collets. The 914 differential uses the same collet as the 915 transaxle. Read the thread. I'm happy with mine. No affiliation.
https://forums.pelicanparts.com/porsche-911...521-4-tool.html  |
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| Krieger |
Jul 30 2026, 10:39 AM
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#2
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Advanced Member Group: Members Posts: 4,874 Joined: 24-May 04 From: Santa Rosa CA Member No.: 2,104 Region Association: None
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| 914werke |
Jul 30 2026, 11:03 AM
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#3
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"I got blisters on me fingers" Group: Members Posts: 11,715 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest
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interesting
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| pfreiburger |
Jul 30 2026, 10:45 PM
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#4
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Member Group: Members Posts: 140 Joined: 6-October 20 From: Fond du Lac, WI Member No.: 24,738 Region Association: None
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Hello - Thanks for sharing this. So other than a dial indicator/mount, proper torque wrenches, and the factory service manual (all of which I have), does this tool include everything that would be needed to set up the differential? This sounds awesome and the price is very reasonable. Cheers!
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| Montreal914 |
Jul 30 2026, 11:15 PM
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#5
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Advanced Member Group: Members Posts: 2,180 Joined: 8-August 10 From: Claremont, CA Member No.: 12,023 Region Association: Southern California
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QUOTE(pfreiburger @ Jul 30 2026, 09:45 PM)  Hello - Thanks for sharing this. So other than a dial indicator/mount, proper torque wrenches, and the factory service manual (all of which I have), does this tool include everything that would be needed to set up the differential? This sounds awesome and the price is very reasonable. Cheers! You still need to adjust pinion depth which is part of the equation. Great tool though! (IMG:style_emoticons/default/smile.gif) |
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| Krieger |
Jul 31 2026, 10:51 AM
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#6
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Advanced Member Group: Members Posts: 4,874 Joined: 24-May 04 From: Santa Rosa CA Member No.: 2,104 Region Association: None
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QUOTE(pfreiburger @ Jul 30 2026, 09:45 PM) Hello - Thanks for sharing this. So other than a dial indicator/mount, proper torque wrenches, and the factory service manual (all of which I have), does this tool include everything that would be needed to set up the differential? This sounds awesome and the price is very reasonable. Cheers! You do need more tools to do this. You also need to set differential bearing preload. Some basic like a gear puller. You need a lot of extra spacer shims. Hard to find. Mostly used or ordering 996 versions. The factory service manual is not really that helpful. I found some videos online to be the most beneficial. Aiccooled Consulting on YouTube was extremely helpful. Watch them carefully. There are different techniques and concepts to understand. It's doable, but more than you think. |
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| pfreiburger |
Jul 31 2026, 05:20 PM
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#7
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Member Group: Members Posts: 140 Joined: 6-October 20 From: Fond du Lac, WI Member No.: 24,738 Region Association: None
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Thanks for the info - I will do some research and check out the info you mention above.
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