Identifying Transaxel Type and Year

[VW Bug Buggy]

Hi All
I'm new to the forum - I have a VW Transaxel Case (no axels) serial Code: AH 4797345
I am trying to identify the year and type (Swing or IRS)
Can someone help with this?

Thanks

[Marc]

"AH" denotes an IRS trans with a 4.125 R&P (and either a .89 or .88 4th) ...and doesn't tell us much else.

If it has 2 drain plugs it's a `69 (early release bearing, held to the 16mm dia cross-shaft by U-clips)

One drainplug, early release bearing, 16mm shaft: `70 ...change from coarse-tooth 3rd & 4th (.89 4th) to fine-tooth 3rd & 4th (.88 4th) in March 1970

One drainplug, late release bearing w/guide tube with 16mm dia cross-shaft, : `71 or early `72

One drainplug, late release bearing w/guide tube with 20mm dia cross-shaft: late `72


Dual-sideplate IRS transaxles like the AH can be converted to swingaxle (and vice-versa) by changing the differential carrier and sideplates. IRS has splined stubs protruding from the sideplates which accept flanges for the CV joints to bolt to; swingaxle sideplates have an opening where the axle shaft goes in, surrounded by six 8mm studs where the axle tube attaches.

[sideshow]

Serial numbers can really only tell what it might have been, look (pictures), measure, and count are far more useful today.

[VW Bug Buggy]

Great - thank you Marc for the feedback really appreciate your input - I will confirm and start the rebuild