so I made some progress on my teardown tonight, down to just the engine now.
on removing the swingarm, i discovered this:
(https://scontent-b-hkg.xx.fbcdn.net/hphotos-xpf1/v/t1.0-9/10888477_10152643293739912_5516391366785878449_n.jpg?oh=0584f3b2d0e0b169a08ccc3984e8544f&oe=5533125D)
the swingarmpivot bolt had a rusty patch around the centre, with some pitting from what i could see. the fresh linear scoring is from when I drifted it out. 8) :-\ the rustier line marks from the sketchy bearings.
(https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-9/1525331_10152643293874912_1922791724195068090_n.jpg?oh=92ad0adcfe7cf416a94d52b14711aec7&oe=553310EC&__gda__=1428936838_de23a38c36b6e81afb3d461ee745488c)
the bearings weren't the best, beginning to deteriorate I think. some stiff, others fairly free, none looking healthy though all contaminated. looks like some moister has penetrated possibly, and in the pivot housing in the centre space its fairly rusty from what little I can see.
my questions so far: how bad is this? i know its not good, at least.
best method for removal/future prevention? I am guessing pack it full of grease? not sure why its such a big hollow.
im hoping this wont require splitting the halves, just to get in there properly...
It happens...
Use what ever means necessary to remove the old bearings and seals and replace. Use a good synthetic grease.
That pivot is rusty, but don't be too worried about the area the bearings don't touch. If the area the bearings touch can be cleaned up I'd use it.
New bearings and seals, they should come out with a bearing puller. If the pivot shaft is cheap enough (about $125 in the US) replace it. Or clean and inspect. Most important is the material the bearing rides on. This must be rust free and perfectly smooth without requiring more than a basic polish. I would use a moly or lithium grease. Pack bearings well. lightly grease shaft. Nate typed faster than me.
Thanks guys! Definitely replacing bearings and seals all round, and I will clean up the pivot pin first before I assess, but I don't like that corrosion. Might just bite the bullet on it.
Do you know if there is a seal on the inside side of each bearing pair? Just trying to work out the best way to remove them hopefully intact for ID/replacement. Might be time to buy a decent bearing puller set too!
Seals outside only.
I did say puller, but they can be removed with a hammer and drift from the opposite side. Inner and outer seals on the bearings. Being overly cautions I would replace the pivot shaft too.
Quote from: ducpainter on January 02, 2015, 05:16:02 AM
I'm wrong. [bang]
Try this instead [coffee] It happens to us all.
is it worth filling the inner space with grease or something? trying to avoid future corrosion? not sure how water would have penetrated to begin with, Koko suggested it'd been cleaned with a high pressure washer.
or I source/commission a Ti pin, no more corrosion! haha I wish.
Just coat the shaft with grease and put grease under the plugs. Chances are the cause is just enough or just enough or not quite enough lube from the factory combined with age, seal condition and the probability those bearings were never serviced. Still lasted over a decade didn't they?
17 years. Disappointing really :P
Look what I found!
http://www.ti64.co.uk/ducati-monster-titanium-rear-wheel-axle-and-swinging-arm-spindle/ (http://www.ti64.co.uk/ducati-monster-titanium-rear-wheel-axle-and-swinging-arm-spindle/)
[drool] [drool] [drool]
I don't think Ti can be persuaded to attain adequate surface hardness to work with the needle bearings in that application.
Needle bearings require shaft surface hardness of Rc 58-64, and that hardness needs to be of sufficient depth as well.
Quote from: Speeddog on January 03, 2015, 11:12:40 AM
I don't think Ti can be persuaded to attain adequate surface hardness to work with the needle bearings in that application.
Needle bearings require shaft surface hardness of Rc 58-64, and that hardness needs to be of sufficient depth as well.
Same problem with this? https://tpoparts.com/cat093/index.php?route=product/product&path=1_21&product_id=257
Quote from: stopintime on January 03, 2015, 01:55:32 PM
Same problem with this? https://tpoparts.com/cat093/index.php?route=product/product&path=1_21&product_id=257
That would be my concern.
Perhaps the OEM steel pivot pin isn't Rc 58-64, but I'd like to know for sure.