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Old 08-22-2008, 04:57 PM
1973 280SEL 4.5
Join Date: Oct 2001
Posts: 105
Is there a tool to remove a W108 slotted nut?

The nuts holding in my 4.5's a/c fan and temp switches are slotted. I want to remove the fan switch however I don't want to use force a screwdriver, for fear it will jump and scratch something else.

What is the correct tool?

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Old 08-23-2008, 11:23 AM
cth350's Avatar
Registered User
Join Date: Dec 2000
Location: Long Island, NY
Posts: 3,721
It's called a eustation wrench. Basically a metal tube with a pair of pins sticking out the end.

It's relatively easy to use a small screw driver in a slot and gently tap the back of the screw driver. Once you turn it 90 degrees, it will come off easily by hand.

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Old 08-23-2008, 01:25 PM
250 Coupe's Avatar
Middle Aged Member
Join Date: Mar 2004
Location: Des Moines, WA
Posts: 743
I used to see them as panel nut wrenches but couldn't find any on google or yahoo last night.

I did find this, at Sears of all places. The two sockets on the right look like what i remember.

I just use a small right angle needle nose plier to do the same thing.

1971 250C 114.023 Sadly, it's been sold. I will miss it.
1976 450SEL 116.033 Maybe not so sadly, it's also gone. It was beginning fall apart more than I was willing to put it back together.
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Old 08-23-2008, 03:29 PM
1973 280SEL 4.5
Join Date: Oct 2001
Posts: 105
Thanks CTH and 250Coupe for your suggestions!

It's now loose so I can now disconnect the blower switch and hopefully clean it up. There are a few dead spots along the rheostat.
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