C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Tool to remove backup switch

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Old May 17, 2010 | 08:42 AM
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Default Tool to remove backup switch

What tool is used to wrench out the back up switch on the ZF 6 spd? It looks too tight to access for standard sockets or wrenches.

Warren
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Old May 17, 2010 | 10:10 AM
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Go to Harbor Freight and buy a set of offset wrenches. I forget what the exact size is for these, but a whole set is like $15. It's tight quarters in there, but that is all I needed to get the job done.
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Old Jan 8, 2011 | 02:06 PM
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Originally Posted by Warren Seale
What tool is used to wrench out the back up switch on the ZF 6 spd? It looks too tight to access for standard sockets or wrenches.

Warren
Removed the clutch slave cylinder, then used an oxygen sensor socket to remove the switch.
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Old Jan 8, 2011 | 10:51 PM
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Originally Posted by techvette
Go to Harbor Freight and buy a set of offset wrenches. I forget what the exact size is for these, but a whole set is like $15. It's tight quarters in there, but that is all I needed to get the job done.
Offset wrench. Check the size you need on the new sensor, somewhere around 21mm IIRC...it's been a few years
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Old Jan 9, 2011 | 01:02 AM
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I had my brother take a 7/8 socket, center on the internal flats and then machine the outside of the socket for a .015" wall to the internal hex peaks. Fits onto the switch and removes old and installs new switch perfectly!
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Old Jan 10, 2011 | 12:59 PM
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Something like this:

http://forums.corvetteforum.com/c4-t...ht-switch.html
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Old Jan 10, 2011 | 04:25 PM
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I found a standard Craftsman 7/8 box wrench worked for me; the wrench is an oldie, probably 1963.
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Old Jan 11, 2011 | 01:22 AM
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I've used one of these

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