1955 four speed transmission sprocket torque specification

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goob
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1955 four speed transmission sprocket torque specification

#1

Post by goob » Sun Oct 02, 2011 12:37 am

I have looked all over for the torque specification to tighten the sprocket nut and the only info I found was to tighten nut securely. Harley has a spec for all nuts and bolt does anyone know this specification.



steve_wood
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Re: 1955 four speed transmission sprocket torque specificati

#2

Post by steve_wood » Sun Oct 02, 2011 1:05 am

120 to 150 foot-pounds

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Hog54
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Re: 1955 four speed transmission sprocket torque specificati

#3

Post by Hog54 » Sun Oct 02, 2011 1:15 am

I use an impact wrench and tighten till it stops. :D

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Re: 1955 four speed transmission sprocket torque specificati

#4

Post by steinauge » Mon Oct 03, 2011 2:37 pm

FWIW It is inadvisable to use an impact wrench on your sprocket nut.A good American made 1\2" drive impact develops a max torque around 350-400 ft lb . This is pretty likely to damage the nut if you are lucky or the main drive gear if you are not.

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Re: 1955 four speed transmission sprocket torque specificati

#5

Post by Hog54 » Tue Oct 04, 2011 2:27 am

steinauge wrote:FWIW It is inadvisable to use an impact wrench on your sprocket nut.A good American made 1\2" drive impact develops a max torque around 350-400 ft lb . This is pretty likely to damage the nut if you are lucky or the main drive gear if you are not.
I have been putting that nut on with an impact wrench on pans and shovels for 30 years and never have I damaged any threads. 8)

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Re: 1955 four speed transmission sprocket torque specificati

#6

Post by JOHNSON » Tue Oct 04, 2011 2:24 pm

try to find somebody with a left hand torque wrench,most common are for right hand torque.I've done both ways of tighten the nut,but mostly i use the 3/4 ratchet, AND GET IT TIGHT AS I CAN.never strip a nut .line it up with the lock,you be OK.and i 'm sure that it will be looses the next time you inspect it.....johnson

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