Posts
24
Joined
5/25/2017
Location
Florissant, MO
US
Edited Date/Time
5/22/2018 5:17pm
2014 CRF450R
Finished a moto and riding back to the truck realized I could not shift up or down.
Took the right crankcase cover off and pulled the clutch basket. One fiber plate was broken into about 10 pieces.
With the clutch basket off the gear shift spindle has a little play but will not shift up or down.
Ideas? Am I going to be splitting cases?
Visually everything looks good except clutch plate shavings and the clutch basket is chewed up where the fiber plates engage.
Thanks in advance!
Finished a moto and riding back to the truck realized I could not shift up or down.
Took the right crankcase cover off and pulled the clutch basket. One fiber plate was broken into about 10 pieces.
With the clutch basket off the gear shift spindle has a little play but will not shift up or down.
Ideas? Am I going to be splitting cases?
Visually everything looks good except clutch plate shavings and the clutch basket is chewed up where the fiber plates engage.
Thanks in advance!
Paw Paw
Are the grooves in the basket just due to normal wear and tear? Abusing the clutch? Or some other cause?
Thanks
The Shop
Irrespective of the clutch, your bike should still shift gear. I’d check all the external items (shift mechanism) before splitting the cases as it’s a lot of work to do if you’re not completely sure the problem lies inside the transmission cluster and shift drum/forks.
As Bruneval stated, with the plates now removed, will it shift? It should with a bit of rotational coaxing. Both UP and Down.
When did you last do basic maintenance per your manual?
I'd split and mic everything, replacing out of spec parts at least. The shift forks/drum and tranny have likely taken a beating. Best to be safe than sorry just doing a basket/plates/hub/bearing.
I replaced the clutch plates and springs with Hinson components roughly 20hrs ago. At this time the basket looked great and showed no signs of wear.
I don’t understand why this got so bad so quickly.
I don't know about your specific engine, but I have seen on Hondas the shift shaft lever slot become disengaged from the little roller sleeve on the pawl mechanism, giving the appearance of a jammed tranny. Start with the obvious and work inwards.
I found the shifter drum (ratchet mechanism) had one of these pins highlighted in red that was stuck due to metal chips.
Does everyone agree it looks as though I found the cause? Once I cleaned it and put it together it cycled through using the shift lever.
Also, there are a lot of chips in the gearbox from the clutch basket... what are some good ways to flush all this out?
My last question... what was the root cause of this? Just crappy Honda clutches? Is it worth it to replace with full Hinson? Or just go back with OEM?
Thanks for the help!
Looks like you value your bike (parts pics on clean towels, not laying on a filthy garage floor). To be fair, you really should put the cover on to prevent sealing surface damage, pull the engine, and split the cases. Full clean and inspection.
I like Pro X setup for 125's (Forged basket/cast OEM hub/Alloy plates). Last well. But your beast is very powerful compared to my bikes. Go top quality to minimize this happening again after all the work you will do to get her in form again.
The most concerning thing is the damage the fragments have done to the transmission bearing seal - the red one in your pic. It needs replaced, but you might get away with it for a little while longer.
Going to take it back apart every few rides and monitor the seal.
Thanks for the help guys. I appreciate it.
Yeah, 3-4-5 flushes with cheap but meeting spec oil may be your ticket (and some hope!)
I'd drop the oil cycle time to 4-5 mins between the changes... At least for the first couple, because the residual pools of WD-40 left behind causing viscosity degradation. 20 mins is a long duration with metal fragments floating around. Oil is cheap compared to engines.
After the first 2-3 changes, take it for a quick ride. Lug it quickly through the gears and drain again.
Good luck! Let us know how you make out.
EDIT: Just my opinion here, as I have never tried the "flush" method, but do think that the "solution to pollution is dilution". I would split the cases. OP, I think you may be "GTG", but I am OCD.
Think I’m goos for a little while.
Thanks for the help.
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