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#1454707 Fri Jun 10 2022 05:50 PM
Joined: Aug 2013
Posts: 259
Is there a source for a socket that fits the cover on the brake master cylinder on a 1950 GMC 453 truck? It’s a square nut on top. Haven’t measured size yet. Started to get back to work on my Old Firetrucks and need to check fluid level. It’s on tight. Thanks

Joined: May 2015
Posts: 5,654
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
If you've got a welder it wouldn't be hard to make a wrench to fit the square nut. It would just take a couple lugs welded to a flat bar and a socket welded in the center. I made a tool like that for the steering gear bearing adjusting plug jam nut, which was way bigger than any of my sockets.

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Joined: Aug 2013
Posts: 259
Thats probably what I’ll end up doing..hit the pawn shop for a big socket to weld to.

Joined: Apr 2005
Posts: 3,055
Measure the square and then do a search for an eight point socket that size. Eight point sockets are for square nuts and bolts.

Joined: Dec 2018
Posts: 1,722
eagleuh1 Here in the corn belt have learned to make square drive sockets out of wore-out disc bearing inner races,they are hard anneal them weld on whatever is needed to drive it. Or torch out a square drive piece of plate weld on a driver. By chance found a tee handle driver that fits the hex ones,hard to hurt it thru that floor board hole !! Also might use 3/4 or 1 inch drive socket turned the other way to shake it loose,

Joined: Jan 2022
Posts: 17
a 3/4 wrench fits the nut I have 1 with the box end opened and put that on the nut with another wrench thru the box end like a t works every time

Joined: Dec 2018
Posts: 1,722
hippydave I've done that it works,worst thing is a plastic one.

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