Dummy needs help
Thread Starter
|
2nd Gear
Joined: Apr 2011
Posts: 6
Likes: 0
From: Rothesay
Dummy needs help
I pulled a stupid. I changed the drive sprocket to an Andrews 34T on my 01 SE Road Glide. When torquing down the drive sprocket nut my torque wrench failed to click. I probably got up to 150+ ft lbs before I realized something can't be right. I backed it off to the prescribed 50 ft lbs. I haven't put the primary back on and everything feels fine when turning the shaft by hand. What damage might I have done? Any recommended checks before I put it back together?
Thanks
Thanks
Thread Starter
|
2nd Gear
Joined: Apr 2011
Posts: 6
Likes: 0
From: Rothesay
Clarification
The nut I overtightened is the nut on the transmission mainshaft and pinches the drive sprocket between the drive sprocket spacer and the said nut.
I checked the threads on the mainshaft and nut and both are fine. My concern is I donlt know what else is on the mainshaft that might have been damaged by excess pressure when I overtightened the nut.
Thanks again.
I checked the threads on the mainshaft and nut and both are fine. My concern is I donlt know what else is on the mainshaft that might have been damaged by excess pressure when I overtightened the nut.
Thanks again.
Outstanding HDF Member
Joined: Jul 2007
Posts: 2,241
Likes: 7
From: Daytona, Fla.
Trending Topics
Road Warrior
Joined: Oct 2008
Posts: 1,692
Likes: 22
From: Denham Springs, La
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Cruiser
Joined: Dec 2007
Posts: 143
Likes: 0
Do you have a manual? As I have the same bike as you (2001 SERG) I checked my manual as I didn't think 55 ft-lbs could be the torque for a final drive sprocket.
The inital torque is 55 Ft-Lbs but then you have to scribe a line on the nut and sprocket and turn the nut an additional 30-40 degrees.
If I knew the pitch of the thread I could calculate the final torque but as torque varies with friction, that is why they use the method mentioned above. They use the same method for critical fasteners such as the rear sprocket bolts.
The inital torque is 55 Ft-Lbs but then you have to scribe a line on the nut and sprocket and turn the nut an additional 30-40 degrees.
If I knew the pitch of the thread I could calculate the final torque but as torque varies with friction, that is why they use the method mentioned above. They use the same method for critical fasteners such as the rear sprocket bolts.
Tourer
Joined: Oct 2009
Posts: 323
Likes: 2
From: Central Pennsylvania
Yep 55 ft lb isn't nearly enough thats just the set torque then turn it another 30 to 40 degrees.I had to use a breaker bar and some pipe just to get 30 degrees.Is the nut around 2 1/2 inches