M1100s Rear shock absorber siezed.

Mossleymonster · 21-02-2018, 03:13 PM

Had a problem getting the rear wheel out, but thanks to a post on here regarding the same for a 1200R I've just been to machine mart and bought that mains powered impact wrench (£72.00) wheel out in a trice!

Next week I'm supposed to be taking my forks and shock absorber to Teut in Preston for servicing and a new rear spring...

Anyhoo, once the wheels out and the hugger removed I attached my nice new impact wrench to a 10mm allen bit and attempted to undo the lower bolt. Given that this impact wrench is capable of something in excess of 400Nm I expected a similar result to the wheel.

Fecking no chance! this bolt is siezed!!!

Has anyone had this problem and found a cure? It looks like it's going to be an awkward one this !

rollo22 · 21-02-2018, 04:28 PM

Give it a good soaking in a penetrating type oil/spray.
It may help to give it a good sharp bang to get the oil in.
You could undo it at the top to aid access ?

jonzi · 21-02-2018, 06:30 PM

I had to have my swing arm off a few years back. I think it took heat, whacking and breaking a few snapon sockets to get the shock out and the swing arm off.

Darren69 · 21-02-2018, 06:49 PM

Try soaking it with Plusgas for a few days?

Albie · 21-02-2018, 08:44 PM

I had a problem seeing the HUGE pics of part..Heard of a few not undoing easy on these.. Brute force after a soak is only option hoping it succeeds

Nickj · 21-02-2018, 09:15 PM

Find someone with one of those induction heater to get the nut really hot, sucker will spin off no problem

Luddite · 21-02-2018, 10:09 PM

The 1100S set up is the same as my 1100 Evo so should only be 42Nm and lubed with molybdenum grease. The bolt is buried snugly and quite deeply within the swinging arm so you're unlikely to get an induction heater round it.

The threaded portion is blind and to the left of the shock eye so it's difficult to get penetrating fluid in there; just squirting it at the bolt head won't work. Try directing the fluid at the gap between the left side of the shock eye and the swing arm. If you've got a hot air gun, try pointing that on a low setting to the left of the shock eye. Be careful not to damage the swingarm paint.

Is the bolt head still in good condition or did the impact gun round it off? Is your impact bit chrome moly (black) or vanadium (silver)? Only use chrome moly with the impact gun.

Assuming the bolt head and impact bit are still good, with penetrating oil and heat, try the gun again. Give it several 4 or 5 second bursts rather than one long one and keep checking the condition of the bolt and bit - any hint of distortion or rounding off, stop immediately.

Hopefully, with heat, oil and continued use of the impact gun, you should get it off. You might want to replace it with a new one once it's out.

When you reassemble, torque it up to 42Nm after lubing it with moly grease.

Good luck!

Luddite · 22-02-2018, 05:07 AM

PS as you've got good access to the bolt, you could also try good old-fashioned brute force and ignorance with a breaker bar if you feel the impact wrench isn't having the desired effect.

bobbertandsammy · 22-02-2018, 07:43 AM

I use XCP Pro as a penetrating fluid, give it a good soak and go back to it in a day. Do you have an impact driver - one of the ones you hit with hammer - to try? Sometimes it gets bolts out for me that my air or electric guns can't budge.

Mossleymonster · 22-02-2018, 09:09 AM

We move on, left it with penetrating oil, then warmed it, then penetrating oil, then 450Nm impact wrench from machine mart. then put the breaker bar on it and gave a tug, guess what, the allen socket has snapped off inside the head of the bolt.

Swing arm removal time, lets hope the swing arm spindle isn't siezed.

Luddite · 22-02-2018, 11:23 AM

Ouch! That's one stubborn bolt. Was it a chrome moly allen socket or chrome vanadium?

What's the plan once the swinging arm's removed? Do you plan to drill it out?

Mossleymonster · 22-02-2018, 11:57 AM

I don't know exactly which type of plasticine the key was made from, academic now lol.

Anyway, I have the Abba Superbike stand complete with "Universal Swing Arm removal Adapters" so, just to be sure, I rang a nice chap at Abba stands to ascertain exactly where to fit said adapters... Response. They don't work on Ducati Monsters due to the footrest arrangement. (Great)

I have limited workspace and no ability to suspend the bike whilst attempting the swing arm removal

Eventually I rang Pete at Bury Motorcycle centre where I got the bike from, he's not phased at all, taking the bike there next week. They are going to remove the swing arm/shock and the forks, so that they can be serviced/resprung for my weight and then re assembled. he says he has an engineer that will make short work of the offending bolt!!!

We shall wait and see, undoubtedly this is going to be costly... On the plus side it won't be at Ducati rates.

Nickj · 22-02-2018, 12:16 PM

That's a bit of a bugger, hope it isn't too 'spensive.

Mossleymonster · 22-02-2018, 12:41 PM

To add insult to injury the new pannier brackets just arrived! No point in fitting them now, although maybe it's time to find all the other fecking siezed bolts.....

Albie · 22-02-2018, 12:48 PM

Can of worms. I still wonder whether Space Monkey ever got that rear engine mount bolt out of his early m900 he was planning to restore

21-02-2018, 03:13 PM	#1
Mossleymonster Registered User Join Date: Nov 2017 Location: Barnsley Bike: M1100s Posts: 238	M1100s Rear shock absorber siezed. Had a problem getting the rear wheel out, but thanks to a post on here regarding the same for a 1200R I've just been to machine mart and bought that mains powered impact wrench (£72.00) wheel out in a trice! Next week I'm supposed to be taking my forks and shock absorber to Teut in Preston for servicing and a new rear spring... Anyhoo, once the wheels out and the hugger removed I attached my nice new impact wrench to a 10mm allen bit and attempted to undo the lower bolt. Given that this impact wrench is capable of something in excess of 400Nm I expected a similar result to the wheel. Fecking no chance! this bolt is siezed!!! Has anyone had this problem and found a cure? It looks like it's going to be an awkward one this ! Last edited by Mossleymonster; 22-02-2018 at 09:45 PM.. Reason: Taken the pictures out

21-02-2018, 04:28 PM	#2
rollo22 Moderator Join Date: Apr 2008 Location: Moreton-in-Marsh Bike: M1100evo Posts: 1,082	Give it a good soaking in a penetrating type oil/spray. It may help to give it a good sharp bang to get the oil in. You could undo it at the top to aid access ? __________________ IF ALL ELSE FAILS READ THE INSTRUCTIONS

21-02-2018, 06:30 PM	#3
jonzi Mary Mary Quite Contrary Join Date: Mar 2012 Location: Berkhamsted Bike: M796 Posts: 1,398	I had to have my swing arm off a few years back. I think it took heat, whacking and breaking a few snapon sockets to get the shock out and the swing arm off. __________________ #48

21-02-2018, 06:49 PM	#4
Darren69 Transmaniacon MOC Join Date: Sep 2013 Location: Sutton In Ashfield Bike: Multiple Monsters Posts: 6,022	Try soaking it with Plusgas for a few days? __________________ Roast Beef Monster! Termignoni and Bucci - Italian for pipe and slippers! S4 Fogarty, S4R 07T, 748, Series 1 Mirage

21-02-2018, 08:44 PM	#5
Albie Fanactical volunteer Join Date: Oct 2003 Location: Kent Bike: M900 Posts: 9,030	I had a problem seeing the HUGE pics of part..Heard of a few not undoing easy on these.. Brute force after a soak is only option hoping it succeeds __________________ http://albies93m900.blogspot.co.uk/

21-02-2018, 09:15 PM	#6
Nickj Too much time on my hands member Join Date: Jun 2007 Location: Forest Of Dean Bike: S2r Posts: 3,189	Find someone with one of those induction heater to get the nut really hot, sucker will spin off no problem __________________ "The final measure of any rider's skill is the inverse ratio of his preferred Traveling Speed to the number of bad scars on his body." Song of the sausage creature

21-02-2018, 10:09 PM	#7
Luddite Registered User Join Date: Aug 2011 Location: Southampton Bike: M1100evo Posts: 2,465	The 1100S set up is the same as my 1100 Evo so should only be 42Nm and lubed with molybdenum grease. The bolt is buried snugly and quite deeply within the swinging arm so you're unlikely to get an induction heater round it. The threaded portion is blind and to the left of the shock eye so it's difficult to get penetrating fluid in there; just squirting it at the bolt head won't work. Try directing the fluid at the gap between the left side of the shock eye and the swing arm. If you've got a hot air gun, try pointing that on a low setting to the left of the shock eye. Be careful not to damage the swingarm paint. Is the bolt head still in good condition or did the impact gun round it off? Is your impact bit chrome moly (black) or vanadium (silver)? Only use chrome moly with the impact gun. Assuming the bolt head and impact bit are still good, with penetrating oil and heat, try the gun again. Give it several 4 or 5 second bursts rather than one long one and keep checking the condition of the bolt and bit - any hint of distortion or rounding off, stop immediately. Hopefully, with heat, oil and continued use of the impact gun, you should get it off. You might want to replace it with a new one once it's out. When you reassemble, torque it up to 42Nm after lubing it with moly grease. Good luck!

22-02-2018, 05:07 AM	#8
Luddite Registered User Join Date: Aug 2011 Location: Southampton Bike: M1100evo Posts: 2,465	PS as you've got good access to the bolt, you could also try good old-fashioned brute force and ignorance with a breaker bar if you feel the impact wrench isn't having the desired effect.

22-02-2018, 07:43 AM	#9
bobbertandsammy Registered User Join Date: Jun 2012 Location: Hamilton Bike: M900 Posts: 196	I use XCP Pro as a penetrating fluid, give it a good soak and go back to it in a day. Do you have an impact driver - one of the ones you hit with hammer - to try? Sometimes it gets bolts out for me that my air or electric guns can't budge.

22-02-2018, 09:09 AM	#10
Mossleymonster Registered User Join Date: Nov 2017 Location: Barnsley Bike: M1100s Posts: 238	We move on, left it with penetrating oil, then warmed it, then penetrating oil, then 450Nm impact wrench from machine mart. then put the breaker bar on it and gave a tug, guess what, the allen socket has snapped off inside the head of the bolt. Swing arm removal time, lets hope the swing arm spindle isn't siezed.

22-02-2018, 11:23 AM	#11
Luddite Registered User Join Date: Aug 2011 Location: Southampton Bike: M1100evo Posts: 2,465	Ouch! That's one stubborn bolt. Was it a chrome moly allen socket or chrome vanadium? What's the plan once the swinging arm's removed? Do you plan to drill it out?

22-02-2018, 11:57 AM	#12
Mossleymonster Registered User Join Date: Nov 2017 Location: Barnsley Bike: M1100s Posts: 238	I don't know exactly which type of plasticine the key was made from, academic now lol. Anyway, I have the Abba Superbike stand complete with "Universal Swing Arm removal Adapters" so, just to be sure, I rang a nice chap at Abba stands to ascertain exactly where to fit said adapters... Response. They don't work on Ducati Monsters due to the footrest arrangement. (Great) I have limited workspace and no ability to suspend the bike whilst attempting the swing arm removal Eventually I rang Pete at Bury Motorcycle centre where I got the bike from, he's not phased at all, taking the bike there next week. They are going to remove the swing arm/shock and the forks, so that they can be serviced/resprung for my weight and then re assembled. he says he has an engineer that will make short work of the offending bolt!!! We shall wait and see, undoubtedly this is going to be costly... On the plus side it won't be at Ducati rates. Last edited by Mossleymonster; 22-02-2018 at 12:01 PM..

22-02-2018, 12:16 PM	#13
Nickj Too much time on my hands member Join Date: Jun 2007 Location: Forest Of Dean Bike: S2r Posts: 3,189	That's a bit of a bugger, hope it isn't too 'spensive. __________________ "The final measure of any rider's skill is the inverse ratio of his preferred Traveling Speed to the number of bad scars on his body." Song of the sausage creature

22-02-2018, 12:41 PM	#14
Mossleymonster Registered User Join Date: Nov 2017 Location: Barnsley Bike: M1100s Posts: 238	To add insult to injury the new pannier brackets just arrived! No point in fitting them now, although maybe it's time to find all the other fecking siezed bolts.....

22-02-2018, 12:48 PM	#15
Albie Fanactical volunteer Join Date: Oct 2003 Location: Kent Bike: M900 Posts: 9,030	Can of worms. I still wonder whether Space Monkey ever got that rear engine mount bolt out of his early m900 he was planning to restore __________________ http://albies93m900.blogspot.co.uk/