Join Date: Nov 2007
Posts: 2,503
AK
12-04-12, 02:57 PM
#1
torque wrench inquiry
I'm working on a small gas engine for a pressure washer. I have the service manual which lists the various fastener torque specifications shown in lb-in and Nm. For example the crankcase cover bolt torque specs are listed as "100 lb-in. (11 Nm)", and the cylinder head bolt specs listed as "220 lb-in (25 Nm)". I know that lb-in means "inch pounds" and Nm means "Newton meters". Here's a picture of the kind of torque wrench I have: http://i207.photobucket.com/albums/b...ps5ba79e78.jpg
Here's a few pictures of the scale numbers on the torque wrench: http://i207.photobucket.com/albums/b...ps80d63032.jpg
http://i207.photobucket.com/albums/b...ps1323cbab.jpg
I can see that the black scale/numbers are apparently foot pounds, and that the red scale/numbers are shown as "Meter Kilograms". I don't know what "meter kilograms" might be as compared to Newton meters, but I do know that I'm interested in obtaining either inch-pounds (not foot-pounds) or newton meters. So is the type of torque wrench I have just too big, no way I can rely on using it for this job, using conversion or something? Any comments/advice appreciated.
Here's a few pictures of the scale numbers on the torque wrench: http://i207.photobucket.com/albums/b...ps80d63032.jpg
http://i207.photobucket.com/albums/b...ps1323cbab.jpg
I can see that the black scale/numbers are apparently foot pounds, and that the red scale/numbers are shown as "Meter Kilograms". I don't know what "meter kilograms" might be as compared to Newton meters, but I do know that I'm interested in obtaining either inch-pounds (not foot-pounds) or newton meters. So is the type of torque wrench I have just too big, no way I can rely on using it for this job, using conversion or something? Any comments/advice appreciated.
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Join Date: Nov 2007
Posts: 2,503
AK
12-04-12, 03:32 PM
#4
Thanks for the conversion. But yeah I think this wrench is not reliable to do the job, even knowing the conversion. Torquing to 8.3 foot pounds and 18.3 foot pounds using the needle on this wrench scale barely seems to not even get close to tightening down the bolts to reasonable tightnesss. I think this wrench is shot/damaged, or otherwise somehow way innacurrate.
Join Date: Nov 2007
Posts: 2,503
AK
12-04-12, 06:13 PM
#6
I've been a good boy, Santa. Please bring me this for Christmas: GearWrench 85051 3/8-Inch Drive Micrometer Torque Wrench 25-250 in lb - Amazon.com
Join Date: Nov 2007
Posts: 2,413
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