Help with paralever bearing issue please.

[Timolgra]

Now you've got the fun of cleaning off all the old loctite

Rotary wire brush

 

[Agothaclypse]

Hi all, Had my bevel box off last year. The pins & locknut are damn tight with the loctite adhesive. Being a cautious soul I did not use too much force at the outset. Used a paint stripping heatgun & kept trying at intervals to loosen it. Eventually about 15mins in, it turned. Used a 1/2" drive ratchet wrench & Hex bit for the pin & impact skt on the ratchet wrench, for the locknut. I was suprised how easily the threads turned, once at the required temperature. So my advice is, give it time. Also by using heatgun, (as opposed to blowtorch) & a bit of judicious shielding, there was no discoloration to the surrounding swingarm portions.
Once I had removed the pins & bevelbox the needle bearings appeared fine, but the fixed & adj pivot pins had some slight wear. I regreased & reassembled & all has been well, however I would like to replace the worn pins at next strip. Does anyone know if the fixed & adjustable pins on the paralever are the same components as the fixed / adj pins at the swingarm pivot, they look pretty much the same.

Regards
Paul

 

[dancata]

The bearing inner diameter is the same, for sure, 17 mm.

 

[MattW]

Hi all, Had my bevel box off last year. The pins & locknut are damn tight with the loctite adhesive. Being a cautious soul I did not use too much force at the outset. Used a paint stripping heatgun & kept trying at intervals to loosen it. Eventually about 15mins in, it turned. Used a 1/2" drive ratchet wrench & Hex bit for the pin & impact skt on the ratchet wrench, for the locknut. I was suprised how easily the threads turned, once at the required temperature. So my advice is, give it time. Also by using heatgun, (as opposed to blowtorch) & a bit of judicious shielding, there was no discoloration to the surrounding swingarm portions.
Once I had removed the pins & bevelbox the needle bearings appeared fine, but the fixed & adj pivot pins had some slight wear. I regreased & reassembled & all has been well, however I would like to replace the worn pins at next strip. Does anyone know if the fixed & adjustable pins on the paralever are the same components as the fixed / adj pins at the swingarm pivot, they look pretty much the same.

Regards
Paul

Depnds on whether you have an 1100 or an 1150

On the 1150:
The adjustable and fixed pinions / locknuts are the same components for the swingarm and paralever (see below).

On the 1100:
The adjustable side are the same but the fixed pivots are different (for some reason the fixed paralever pinion is steel and the fixed swingarm pinion is titanium as I discovered when I had to change them both last year).

Swingarm and paralever bearings are different components though (for both bikes).

Picture below is for the 1150 from here (handy site).

 

[Agothaclypse]

Thanks Matt, That info helps me. I will get some ordered, so I can do paralever/swingarm brg/pivots, all at same time.

Back to original thread. To take the trial & error out of getting the heating up of the pins correct, I am thinking of investing in one of these infrared thermometers.
http://www.maplin.co.uk/Module.aspx?ModuleNo=220790
As you can see the price of these devices is now very affordable. On the other hand, maybe I will just reassemble without the loctite 2701 & stop being so anal & OCD.

 

[dancata]

If you have the money to spare, go for it, but I got the same result with boiling saliva on the screw.

 

[MattW]

Thanks Matt, That info helps me. I will get some ordered, so I can do paralever/swingarm brg/pivots, all at same time.

Back to original thread. To take the trial & error out of getting the heating up of the pins correct, I am thinking of investing in one of these infrared thermometers.
http://www.maplin.co.uk/Module.aspx?ModuleNo=220790
As you can see the price of these devices is now very affordable. On the other hand, maybe I will just reassemble without the loctite 2701 & stop being so anal & OCD.

Neat - I didn't know you could get them that cheap now - might have to pop to Maplin this weekend...

However, as Dancata says - I used the licked finger 'if it sizzles, it's probably hot enough' test

 

[Welshman]

Go to any industrial hardware supplier (does the UK have industry left) get a "Tempilstick" for the range you want much better much more acurate cheaper

 

[casperfelix]

Neat - I didn't know you could get them that cheap now - might have to pop to Maplin this weekend...

However, as Dancata says - I used the licked finger 'if it sizzles, it's probably hot enough' test

I used an Infrared Thermometer. Bought it cheap a couple of years ago to use when balancing radiators. Similar to this one http://cgi.ebay.co.uk/Infrared-Ther..._Reptiles_Spiders_Insects?hash=item2a05ebc4ee which costs about £10. Works fine once you get the hang of how close to put it to what you're measuring.

 

[Stanley Knife]

Spurred on by the success of Casperfelix and others on his thread I decided to give my paralever pin another go today.
I took the bike out to my friends garage which has power (unlike my own) and rigged up a hot air paint stripper on a stand.

Protected the swingarm paint with a bit of tinfoil and let it heat up for 15 mins.
I tried to smell the Loctite melting but couldn't, (I was in the country and the surrounding fields had just been spread!).
I gave it a tentative push with the 2ft breaker bar and the hex bit started to slip some more ( I was using a slightly longer Teng 12mm bit hoping to grip the small area that had not been rounded.
Gave it another few minutes heat another push and it turned,I too was surprised how easily it loosened in the end when correctly heated.

Once the pin cooled down the inner race of the bearing slid of easily to reveal signs of pitting on the race and some slight surface wear on the pin itself.

So not quite done yet, but once I get a new set of bearings and a new pin it will be a straight forward disassembly and rebuild,with no Loctite!!
And in the future it will be an undaunting task to strip and grease it all up.
Cheers

 

[dancata]

Why not bushings instead of bearings?

 

[MattW]

Spurred on by the success of Casperfelix and others on his thread I decided to give my paralever pin another go today.
I took the bike out to my friends garage which has power (unlike my own) and rigged up a hot air paint stripper on a stand.

Excellent
I like your hot air gun stand - I sat on the floor for ages with the gun in my hand

 

[Stanley Knife]

Just been reading the,'Installing rear wheel drive' instructions in the BMW manual in preparation for changing my paralever bearings and I noticed this in the re-assembly instructions.

*Load approx. 85kg (187 lbs) onto motorcycle and tighten loose reaction link*

Not that easy to accomplish if you are attempting to do the job on your own!

Presumably they mean once you have the wheel back on and the bike off the stand can anyone enlighten me.

 

[davegs]

I've done this many times changing bevel boxes and wheel changes and never done anything like this, done 87.000 now with no probs so I wouldent worry too much.
dave gs. (bevel boxes as experiment with gearing no through any prob.)

 

[Stanley Knife]

Thanks Dave,I thought that might be the case and I never seen it mentioned in any of the posts.

 

[Steptoe]

, done 87.000 now with no probs so I wouldent worry too much.

That's a hell of a lot of bevel changes.