Torque Wrench for Open-ended Wrench? - PeachParts Mercedes-Benz Forum

shertex · #1 07-12-2012, 10:06 AM

The FSM specifies a torque value of 35-45 Nm for the fitting at the return line and the power steering pump reservoir. I'm sure tightening by feel will be fine, but it does make me curious: what kind of torque wrench exists to enable one to specify a torque value on a fitting that takes an open-ended wrench?

Stretch · #2 07-12-2012, 10:07 AM

Put a crows foot on the end but then calculate the change in torque due to the offset.

shertex · #3 07-12-2012, 10:15 AM

Quote:

Originally Posted by Army

Put a crows foot on the end but then calculate the change in torque due to the offset.

Makes sense....thanks!

Diesel911 · #4 07-12-2012, 10:20 AM

See pic.
I used a Breaker Bar in the pic to represent a Torque Wrench. If what you put on the Torque Wrench is 90 degrees from the Head of the Wrench you do not have to calculate the length. You can verify that with an internet search.

Items attached to the Torque Wrench that stick beyond the center line of the Square Drive at other angles need to be calculated because they change the length of the Torque Wrench.

shertex · #5 07-12-2012, 11:05 AM

If I were to purchase a metric crowfoot set, which would be better: a set where the wrench comes with a swivel socket or a set where the crowfoot simply fits on the drive?

I like excuses to buy tools....but sometimes I find I buy things I end up not using much.

mach4 · #6 07-12-2012, 12:53 PM

You could always use something like this and not do the calculation.

Or better yet, this

Stretch · #7 07-12-2012, 01:36 PM

Quote:

Originally Posted by mach4

You could always use something like this and not do the calculation.

Or better yet, this

They are nice and work well for low torque but I've found that they topple when you go past about 3 white fingers (when you need to grip really hard) - probably user error...

Jeremy5848 · #8 07-12-2012, 02:04 PM

Quote:

Originally Posted by shertex

If I were to purchase a metric crowfoot set, which would be better: a set where the wrench comes with a swivel socket or a set where the crowfoot simply fits on the drive?

I like excuses to buy tools....but sometimes I find I buy things I end up not using much.

I bought a plain crowfoot set; it fits 3/8 drive socket tools. I also got a set of crowfoot flare wrenches, which are especially good for injector hard lines and other plumbing-type jobs. I don't use them a lot but when I do need them, nothing else will work.

Jeremy

strelnik · #9 07-12-2012, 02:04 PM

Quote:

Originally Posted by shertex

If I were to purchase a metric crowfoot set, which would be better: a set where the wrench comes with a swivel socket or a set where the crowfoot simply fits on the drive?

I like excuses to buy tools....but sometimes I find I buy things I end up not using much.

All crowfoot wrenches will work, I have two sets, one that is standard crowfoot and another that is a bit more closed and useful for various fittings where a box wrench is not possible, but desirable.

amosfella · #10 07-12-2012, 09:19 PM

Snap-on Tools

These are a body that you can put different heads both racheting, and box/flare/open end onto...

Komanche · #11 07-29-2013, 10:34 AM

Quote:

Originally Posted by mach4

You could always use something like this and not do the calculation.

Or better yet, this

I know this thread is more than half a year old, but I cannot find these... What is this tool named? I looked through Hazet catalogue, but no luck...
Thanks

Diesel911 · #12 07-29-2013, 01:02 PM

Quote:

Originally Posted by Komanche

I know this thread is more than half a year old, but I cannot find these... What is this tool named? I looked through Hazet catalogue, but no luck...
Thanks

Both of those Tools are Valve Adjusting Tools. In general they are 17mm or 14mm.
There is also a one piece 17mm.
Used ones come up on ebay once in a while the sellers who use by-it-now tend to be expensive but when they are auctioned you can sometimes get them at a reasonable price.
You often see a longer Tools Sold by Snap-on eBay that is 17mm.

What did you Plan to use it for?

I sold both of the ones in the Pic to someone in Canada.

vstech · #13 07-29-2013, 05:55 PM

Harbor freight has a set of 5 point crowsfoot sockets, much higher quality than the 3 point ones in the above pictures. I'll try to take a pic of the set I have.
lowes also has a set of PRC 5 point sockets...

Diesel911 · #14 07-29-2013, 09:08 PM

Quote:

Originally Posted by vstech

Harbor freight has a set of 5 point crowsfoot sockets, much higher quality than the 3 point ones in the above pictures. I'll try to take a pic of the set I have.
lowes also has a set of PRC 5 point sockets...

Which Pic were you referring to?
The Ones in My Pics are Hazet and Sthalwillie Tools.

Komanche · #15 07-30-2013, 05:48 AM

Quote:

Originally Posted by Diesel911

Both of those Tools are Valve Adjusting Tools. In general they are 17mm or 14mm.
There is also a one piece 17mm.
Used ones come up on ebay once in a while the sellers who use by-it-now tend to be expensive but when they are auctioned you can sometimes get them at a reasonable price.
You often see a longer Tools Sold by Snap-on eBay that is 17mm.

What did you Plan to use it for?

I sold both of the ones in the Pic to someone in Canada.

I need it for customer who needs to use torque wrench in low space, where this shape of "socket" will work... But we need it 1/4". 1-10 Nm only.