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Tr280I Dripping Oil


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Got a bit of a problem with my 2012 tr280i, for the last couple

Of weeks after I've ridden and washed it off, I leave it to warm

Up and I've notice the breather pipe from down near the gear

Lever has oil coming out of it, the last time it had its oil changed

Was back end of last year when it had a spring replaced in the

Gearbox at my dealers. The only thing I've done different was

Last week at a trial I had to lay it down a couple of times not

Totally flat and from memory I laid it down on the rear brake

Side.

Jsp

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Is it the breather hose in this picture?

What sits behind the hose is a bearing for the primary shaft, held in by a circlip. The primary shaft is hollow but there is a long slender rod with a nut (called the clutch fixer rod) through the centre of the shaft. This little clutch fixer rod is hollow.

This just a guess, but I could see oil coming out of the breather for a couple of reasons:

(1) enough oil in the crankcase to go above the primary shaft and into the clutch fixer rod. Was your crankcase possibly way overfilled? I dont have a problem with 450cc of oil.

(2) The clutch fixer nut has come loose and as the bike tilts, oil gets in the primary shaft and then gets sloshed down to the end. If this was a problem your clutch would probably not work or at least acting up.

(3) Laying the bike on the brake side would load a bunch of oil into the primary shaft and into the hollow centre of the fixer shaft It might take a bit for the oil to drain - I say give it a couple of weeks and see if it goes away.

...of course this will all be blown out of the water when PeterB sees your issue.

post-14078-0-03845800-1393106847_thumb.jpg

Edited by trialtrial
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I am intrigued by this now, the ossa parts manual indicates that the part is the primary shaft locker shaft ( item 35), so would this be what came loose? It does not show a nut that it screws into though

I have now found te clutch fixer nut (part 11)

Edited by canada280i
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Trialtrial yes that's the one, it's strange as it's only done it whilst the bikes stood ticking over when I ride it it's ok, I'll ring the bike shop tomorrow and find out how much oil he put back in

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I am still interested in the locker shaft and the clutch fixer nut if trial trial has any more info, but another thought for JSP, make sure the end of the hose is higher than where it attaches to the engine breather to avoid a siphoning action. Mine has leaked a little at times as well, importer spoke with the factory who did not indicate a problem or concern. I was told to refill with 400 ml of oil, up over the old 350 limit but less than the 2014 model 450 ml limit which is only possible because they have move the crank breather location to make it higher on the case

Edited by canada280i
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I replaced mine with clear tubing so I could see what was going on, a small amount of oil bubbles into the pipe but so far has not pumped out. The clutch fixer rod that trialtrial refs to is a new part and was not listed on the 2011 parts diagram so I am not sure when it was introduced (2012 or 2013) which is why I am curious about its purpose as it is positioned directly behind the vent elbow so i guess if some oil is getting stuck behind the fixer rod when the case pressurizes it would be forced out... Of course I don't know for sure but hopefully trailtrail can shed some light as he has recently had his gearbox out

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Thanks ric, this actually looks like quite a simple mod for pre-2014 bikes to allow 450ml of oil to be use and involves moving the breather elbow from where it is by the sprocket on the earlier bikes to the 2014 location which is now behind the kickstart spindle. New layout is in the 2014 parts diagram at this link http://download1411.mediafire.com/utebf761ah2g/p271wz7luh8j5ur/2014+TR+Parts+Book.pdf

Looks like ossa have just blanked off the existing hole by the sprocket with an m5 screw and washer, makes the breather less vulnerable and by raising it to the kick shaft level allows the use of 450 ml of oil.

If anyone has done this mod please provide comment.

This will or should eliminate the oil leaking issue as well.

Picture of the blanked off breather is here on lotus54s explorer http://i298.photobucket.com/albums/mm256/lotus54/OSSA/a5731a4252a455fc04e4430a9c698799_zps64274501.jpg

New location of the breather appears to be where the kickstart shaft is located which can be seen in the bottom left picture on page 1 of the document at this link, looks like an m5 size hole would need to be drilled for the breather elbow to be located in.

Edited by canada280i
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Hey gang,

The "clutch axis fixer" (called on the explorer) which is the same as the "primary shaft locker shaft" (as called on the 2013 TR280i) was not on the 2011 models. I was told this part was an improvement so that the clutch engagement point would remain the same as the bike was run through it's paces.

If the "clutch locker nut" starts to loosen, your clutch will slowly not engage. It will feel like there is something in the way (and there is!). IF the "clutch locker nut" falls off (which happened on a bunch of 2012 explorers) the clutch will not engage at all. Don't be a dope like me and force it - bad things will happen.

If you need to tighten this nut do the following:

(1) remove the clutch cover (see the PDF from OSSA canada) and then the nut will be exposed.

(2) The "clutch locker nut" is a LEFT HAND THREAD.

(3) clean off the nut with brake cleaner

(4) clean off the shaft with brake cleaner (this is *not* easy as it will pollute the oil and clutch plates - so be careful and use lots of paper towels)

(5) use BLUE locktight on the nut

(6) hand screw on the nut (LEFT HAND thread)

(7) remove the oil breather and insert a torx (T10 maybe?)

(8) tighten the nut gently - I dont think I used more than 4-5 Nm

Hope this helps.

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