Home Remedy Needed-Changing The Sprockets - Ducati.ms

Suigeneris · May 28th, 2010, 9:21 pm

Hey All,

Spring is turning to summer and I got new chain and sprockets but, am having a little trouble with the rear nut as I am a one man operation. With any other bike I'd put an iron bar between the rim and swingarm, thats a one man operation. But, I cannot bring that on the Hyper. Any suggestions appreciated.

08hyper · May 28th, 2010, 9:27 pm

Can't you get someone to stand on the rear brake? Aloha Alex

AXE · May 28th, 2010, 11:35 pm

I have been able to place my hand on the tire pushing down and loosen the nut with a breaker bar. I do it while on the rear stand, so that the bike won't roll.

Othewise, just hit it with an impact wrench it will spin it off. Just a quick blip with the gun or it with get all squirrely and ruin the threads.........this ain't the NASCAR pits. Don't use the impact wrench going back on or your gonna get everything all twisted off.

Out!

Suigeneris · Jun 7th, 2010, 5:36 pm

Hey all, I need to revisit this issue. I got a buddy over last night. He sat and locked the rear. The nut wouldn't give. I used a breaker bar and had the rear wheel off the ground. Nothing! At that point I stopped because he was getting unstable and I was afraid of breaking something. Another friend suggested that I try to break both nuts on either side at the same time, as this was how he was told to do it? Any suggestions? I know I used at least 80-100 lbs of torque if the bike was coming off the ground. This nut is not a reverse thread is it? I really don't want to take it to a shop and pay. I also got the shop manual which makes it seem like these nuts just come off by themselves. I mean, wtf, is Lou Ferrigno working for Ducati?

marc.danziger · Jun 7th, 2010, 6:33 pm

Usually, I break the nut loose with the wheel on the ground, then lift the bike and take it off...

dave2riff · Jun 7th, 2010, 8:13 pm

Quote:

Originally Posted by Suigeneris

Hey all, I need to revisit this issue. I got a buddy over last night. He sat and locked the rear. The nut wouldn't give. I used a breaker bar and had the rear wheel off the ground. Nothing! At that point I stopped because he was getting unstable and I was afraid of breaking something. Another friend suggested that I try to break both nuts on either side at the same time, as this was how he was told to do it? Any suggestions? I know I used at least 80-100 lbs of torque if the bike was coming off the ground. This nut is not a reverse thread is it? I really don't want to take it to a shop and pay. I also got the shop manual which makes it seem like these nuts just come off by themselves. I mean, wtf, is Lou Ferrigno working for Ducati?

Ducati uses two gorillas with a 10-foot Snap-On.

It is NOT a reverse thread on either side. Good idea using a friend... have him
sit on the bike with the rear brake fully engaged. I have used a 30-inch pipe
extension over the 1/2"-drive breaker bar. But now I usually rely on an air driven
high-torque impact wrench. One of the often available pipe extensions is the
tubular steel handle of a common floor jack, which often break down into two
sections of about 2 1/2 feet each. Best to buy a bigger breaker bar, but...

The nut and washer should be lightly greased before installing them on the bike.
This will help reduce galling and slightly lower the break-away torque
needed the next time you do this (the factory does use an assembly lube
but it may have been removed by someone in the past working on the bike).

Antigrav · Jun 7th, 2010, 8:13 pm

You need to get a long pipe to slip over the the breaker bar... 4-5 ft for leverage. I did it solo and I was stunned by what it took to get it off... I put a wedge on the brake pedal.... I had it on the pit bull stand and gradually added my body wieght until it broke free... but you need that leverage big time or else it not going to budge... putting it on at 135 lbs it very easy... it just hard getting it off.

stryder · Jun 7th, 2010, 8:22 pm

Quote:

Originally Posted by Suigeneris

...Any suggestions? I know I used at least 80-100 lbs of torque if the bike was coming off the ground. ...

The bike was coming off the ground? Swing that breaker bar past 12:00 to say about 10:00 or 9:00 and push *down* on the bar, don't pull up on it. That pipe extension on the breaker bar is a good idea, I use one all the time. Roll the bike up against a wall so the front wheel touches it to keep the bike from moving forward. Make sure the socket is fully seated on the nut. Try giving the nut a few firm taps or putting a little heat to it beforehand. Or, go rent an impact gun to loosen it. Good luck.

AXE · Jun 7th, 2010, 10:17 pm

Well, those nuts torque up at something like 180 Nm or 133 ft/lbs (double check the manual). You may want to grab a bowl of Wheaties and get after it again.

If you ain't got an impact wrench, go find someone that does. Just get the nut broken, tighten it back up some and ride home and remove it with the breaker bar. This ain't brain science or rocket surgery you know!

Out!