how to torque nut when you can't use a socket

[Piper]

The other day I had to install a brake reservoir sensor. It was a 7/8" nut sized sensor. The service manual says to torque to some value. Anyway, as this sensor has wires leading from it the use of a socket is impossible. I don't have crows foot wrenches but thought that possibly this is the use for them? Can someone explain a) how you could torque a sensor like this and b) is this the purpose of crowsfoot wrenches?

I'm sort of at a loss when a crowsfoot would be used.

Piper

 

[l_bilyk]

You could uses a sensor socket

 

[MAD]

For the situation you describe, a sensor socket with a cut away section for the wires would be the way to go if the torque value was critical.

 

[Kevin54]

is this the purpose of crowsfoot wrenches?

A crowsfoot is good for places that a socket won't fit with an extension or like on a distributor bolt. Sedom used but as handy as can be when you figure out the first time to use one. One exhaust bolt where the "Y" pipe bolts on, on my '93 Silverado was impossible to get to with a socket, a wrench or anything else EXCEPT a crowsfoot wrench on a long extension. Definately a handy little tool that deserves space in the toolbox.

 

[Junkman]

A crows foot looks just like any other birds foot, so why are they not called pigeon foot or parakeet foot, or any other birds name? Inquiring minds need to know..

 

[Country]

How bout a buzzard foot???...

 

[ImportTuner]

I have a bunch of oxygen sensor tools, but my first choice is a 7/8" crowsfoot ... works like a charm ...

 

[russlaferrera]

A crows foot looks just like any other birds foot, so why are they not called pigeon foot or parakeet foot, or any other birds name? Inquiring minds need to know..

While your asking... Do they come in right and left foot sizes? and If you have a set, are they called Crows feet wrenches?

 

[dxdexter]

A crows foot looks just like any other birds foot, so why are they not called pigeon foot or parakeet foot, or any other birds name? Inquiring minds need to know..

Isn't it obvious: only crows have chromed feet, the others do not.
Or is that only north of the border?

 

[D2002]

A crowsfoot with a torque wrench may fit the bill but be aware that using one can change the torque. This is a link I found pretty quickly with google...

http://www.flashoffroad.com/Maintenance/Specs/torqueSpecs/torqingCrowsfoot.htm value.

 

[l_bilyk]

I have a bunch of oxygen sensor tools, but my first choice is a 7/8" crowsfoot ... works like a charm ...

Yeah but then you're going to over-torque by a little

 

[ultgar]

Some companies (the one shown here is Facom but you can check CDI and others) have removable ratchet heads that will accept flare and crowsfoot accessories....

 

[Junkman]

While your asking... Do they come in right and left foot sizes? and If you have a set, are they called Crows feet wrenches?

can a crows foot be pidgeon toed? If you aren't very good using a crows foot, does that mean that you have two left hands?

 

[nissan_crawler]

Yeah but then you're going to over-torque by a little

You won't if you use it right.

 

[Phatsub]

Here's a torque wrench kit that comes with crows feet.

http://www.dereksairconditioning.co..._id=37&zenid=a4cbab77c5f7620ad8d4d117c323ea6b

 

[mulepackin]

This entire thread has been something to crow about (sorry I couldn't help myself).

 

[Moose-LandTran]

Mac make a handy adapter for wrenches that "clamps" to the handle of the wrench and has a square drive for a torque wrench, i've yet to see one in person but it does look very good. i believe it's in the motorcycle section of their catalogue, if you have one.

 

[Charles (in GA)]

If you really feel that you need to torque (accurately) something with a crowfoot, then put the crowfoot wrench 90 degree to the torque wrench and torque away. If this is not feasible, then simply do your calculations using the page below as an example. You will find this same info on virtually all torque wrench manufacturers web sites (Norbar, CDI, etc.)

Go to the link below, look at the lower right of the page, for calculators for extensions (crowfeet, etc), torque value converter, and a torque tension calculator.

http://www.norbar.com/usa/AboutNorbar/tabid/138/Default.aspx

Charles

 

[l_bilyk]

You won't if you use it right.

Sure you will... you will be off from the pivot by an inch or so, so you would have to compensate by changing the torque spec

 

[Charles (in GA)]

Sure you will... you will be off from the pivot by an inch or so, so you would have to compensate by changing the torque spec

As Nissan_Crawler noted, not if you "do it right", literally, at a right angle to the torque wrench, there is no affect on the torque, since the distance from the handle to the center of the crowfoot is the same as the distance from the handle to the center of the square drive. The adapter/crowfoot adds zero length to the tool, zero offset.

Charles

 

[nissan_crawler]

Sure you will... you will be off from the pivot by an inch or so, so you would have to compensate by changing the torque spec

Wrong again, see quote above me. Crowfoot at 90* does NOT change the value of the torque. Want to argue with me? It's in the standard practices of the AC 43.13-1b, our aircraft standard practices manual, and the literature with the torque wrenches themselves. Thousands of engineers say you're wrong.

 

[nissan_crawler]

Here, straight out of the AC43.13-1B, which is FAA government standards.