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Steel plug over pinion nut - WF hydrostat transaxle

Posted: Mon Jun 24, 2019 11:00 pm
by DaveKamp
Hey guys-

the WF iron hydrostat axle has what appears to be a steel cap or plug pressed into the transaxle housing to seal off access to the pinion nut.

Is there a clever way to remove this... to gain access to removing the pinion... without damaging it?

Re: Steel plug over pinion nut - WF hydrostat transaxle

Posted: Tue Jun 25, 2019 12:00 pm
by Tom Scott
Dave - I assume it is same as with the newer aluminum rears, just an expendable disc type domed freeze plug. While rear is disassembled, easy to knock out, replace with new.

Cub likely still lists a replacement plug to eliminate guesswork for proper replacement part. Put some sealant around the edges and then hit squarely in the center with very large drift to expand.

Re: Steel plug over pinion nut - WF hydrostat transaxle

Posted: Tue Jun 25, 2019 9:28 pm
by DaveKamp
Okay, thanks Tom. I didn't see a good angle to get at it to knock it loose, other than try to knock one side inward enough to get the opposite to pop out into vise-grip range. Izzat the standard modus operandi?

Re: Steel plug over pinion nut - WF hydrostat transaxle

Posted: Wed Jun 26, 2019 9:01 am
by Tom Scott
Dave - Been so long, I can't remember what I did. I think I drilled most of the way through then used a sharp punch to beat a hole the rest of the way through,then pried it out. Do not try to beat one edge in, the lip behind it will prevent that.

Here is my thread that has the rear set-up, but I didn't show plug removal: viewtopic.php?f=8&t=5282&hilit=cinderella&start=90

Re: Steel plug over pinion nut - WF hydrostat transaxle

Posted: Sun Jun 30, 2019 12:02 am
by DaveKamp
Thanks Tom!!!

Re: Steel plug over pinion nut - WF hydrostat transaxle

Posted: Tue Jun 30, 2020 7:10 am
by Dave C
part to replace that plug is a Dorman 550-030
prob can cross it to another manufacturer

i keep a good stockpile of them handy

Re: Steel plug over pinion nut - WF hydrostat transaxle

Posted: Wed Jan 19, 2022 4:03 pm
by DaveKamp
Dave C wrote:
Tue Jun 30, 2020 7:10 am
part to replace that plug is a Dorman 550-030
prob can cross it to another manufacturer

i keep a good stockpile of them handy
Thanks for the tip, Dave!

Sorry about the slow progress, Gents - Other than a start to a pair of 8-bolt rear wheels, I have made NO progress on Mutt's Mustang LSD rear end in the last six months... still slow recovery on the knee blowout, and lots of honey-do tasks atop the priority pile, but I'm making the workshop more-ready slow-but-steady. Once I get a few more things straightened out in the shop, I'll get back to it, get those wheels done, axle outers fab'd, and start reassembly of the rearend with the beefy new LSD.