Home

Go Back   .: XT660.com - The #1 XT660 Resource :. > XT660Z T�n�r� > XT660Z T�n�r� General Discussions
FAQ Calendar Search Today's Posts Mark Forums Read Main site

Google

XT660Z T�n�r� General Discussions Everything and anything of general topic in relation to the new T�n�r� is discussed here

Reply
 
Thread Tools Display Modes
  # 1  
Old 01-05-15, 01:46
66T 66T is offline
XT-Moto SuperStar
 
Join Date: Feb 2010
Location: Adelaide
Posts: 484
66T is on a distinguished road
A thought about the 2015 model recall.

I read with interest about the gearbox-related recall.

It prompted me to remember looking at pics of bikes that were damaged by gear failures. It seems to me that the ones that failed randomly (and not as a result of stopper arm bearing problems) looked as though the gears had been very hot.

Could it be that the same issue that has plagued some 2009 owners has finally been recognised as a serious problem in the later models? Obviously, I have no idea whether this is true or not, but it does seem coincidental.

As an aside, it would be interesting to know just what the lubrication problem is. If it's something simple like a crimp in the oil feed pipe, it's an easy fix.
  # 2  
Old 01-05-15, 07:35
Pleiades Pleiades is offline
XT-Moto SuperStar
 
Join Date: Aug 2010
Location: North Norfolk
Posts: 5,320
Pleiades is on a distinguished road
The problem is with the part(s) circled red:



It would appear to be that one (or both) of the banjo bolts at the unions were not manufactured properly; the bolts did not have the holes machined/drilled correctly. Apparently (and I'm speculating here) the holes were either too small, swarf was left behind causing a blockage, or the axial (central hole) and the radial (side) hole were not drilled far enough so don't meet, effectively the bolt is blind and no oil can pass through. Some people have even suggested the hole(s) aren't present at all?!

According to Yamaha Motor da Amaz�nia...

Quote:
Due to a nonconformity detected in the union of the delivery pipe, the oil passage is interrupted, preventing the lubrication of motorcycle gearbox, resulting in possible locking of the rear wheel with a crash risk and injury to users.

Average service time: 20 minutes to verify the problem; or 12 hours in case of need to repair or exchange parts, depending on the extent of the damage.
It is a simple enough thing to check. Just take the oil delivery pipe off and see if the bolts and pipe are clear and replace if necessary. The problem is, if the gearbox has done several thousand miles/Kms with a weak or partial pressurised oil feed, it will be compromised anyway. The splash lubrication may well help to "keep things going", but ultimately it isn't going to have done enough and failure will be inevitable.

The same problem may well (as you imply) have occurred before, and might be the reason for the 2009 model gearbox problems? All guesswork though... I wonder - Has anyone who's gearbox has gone west checked that the delivery pipe and it's fittings were completely clear of obstruction??

Last edited by Pleiades; 02-05-15 at 00:20. Reason: fix typos
  # 3  
Old 01-05-15, 12:49
zipfer zipfer is offline
Expert XT-Moto
 
Join Date: Apr 2015
Location: Stockholm
Posts: 59
zipfer is on a distinguished road
this affects only a small batch of banjo bolts on new units. If you have a affected unit then you have no oil to the gearbox and it will lead to serious failure in just a few miles.
__________________

XTX 2011. Yamaha Hand Guards, Akrapovic slipon mufflers, Snorkel removed, Airbox drilled, AIS Blocked, PCV, Dynojet Autotune, Kev O2 Controller, Dna Stage 2, KN air filter, mini indicators, steel sprocket cover, cnc levers, cnc mirrors.


  # 4  
Old 01-05-15, 18:48
Pleiades Pleiades is offline
XT-Moto SuperStar
 
Join Date: Aug 2010
Location: North Norfolk
Posts: 5,320
Pleiades is on a distinguished road
Quote:
Originally Posted by zipfer View Post
If you have a affected unit then you have no oil to the gearbox and it will lead to serious failure in just a few miles.
Indeed, but it isn't very clear from the information Yamaha has released (so far) regarding the current recall whether it's just a restriction or full blockage? I guess we'll find out when/if we hear anything from the unlucky few who have got problem bikes.

As for the 2009 problem, well it's anyone's guess, but it isn't unreasonable to think that a restricted oil feed could have been a contributory factor? This recent issue has highlighted something else, something new to check that hadn't been thought about before...
  # 5  
Old 04-05-15, 16:22
zipfer zipfer is offline
Expert XT-Moto
 
Join Date: Apr 2015
Location: Stockholm
Posts: 59
zipfer is on a distinguished road
its a batch of undrilled bolts so no oil goes to the gearbox.
__________________

XTX 2011. Yamaha Hand Guards, Akrapovic slipon mufflers, Snorkel removed, Airbox drilled, AIS Blocked, PCV, Dynojet Autotune, Kev O2 Controller, Dna Stage 2, KN air filter, mini indicators, steel sprocket cover, cnc levers, cnc mirrors.


  # 6  
Old 05-05-15, 03:47
66T 66T is offline
XT-Moto SuperStar
 
Join Date: Feb 2010
Location: Adelaide
Posts: 484
66T is on a distinguished road
Good grief! That's a fairly basic error imo.
  # 7  
Old 11-05-15, 20:03
Norwegian Mule Norwegian Mule is offline
Newbie XT-Moto
 
Join Date: Feb 2015
Location: Hordaland
Posts: 13
Norwegian Mule is on a distinguished road
Quote:
Originally Posted by zipfer View Post
this affects only a small batch of banjo bolts on new units. If you have a affected unit then you have no oil to the gearbox and it will lead to serious failure in just a few miles.
I have got a recall letter from Yamaha Europe, mine has 1600kms on the clock and is just 2 mnths old. I recon i would be toast if it is affected by the failure. They told me i could drive to the shop about 80 kms from my home so They seem quite confident its not affected. Cross my fingers and hope.......

Vidar
  # 8  
Old 11-05-15, 21:29
zipfer zipfer is offline
Expert XT-Moto
 
Join Date: Apr 2015
Location: Stockholm
Posts: 59
zipfer is on a distinguished road
Hi you should not worry, if your gearbox had no oil then it would never survive 1600km. I think you are safe. But always better to be safe then sorry so you should go asap to the workshop.
__________________

XTX 2011. Yamaha Hand Guards, Akrapovic slipon mufflers, Snorkel removed, Airbox drilled, AIS Blocked, PCV, Dynojet Autotune, Kev O2 Controller, Dna Stage 2, KN air filter, mini indicators, steel sprocket cover, cnc levers, cnc mirrors.


  # 9  
Old 11-05-15, 21:52
Norwegian Mule Norwegian Mule is offline
Newbie XT-Moto
 
Join Date: Feb 2015
Location: Hordaland
Posts: 13
Norwegian Mule is on a distinguished road
Quote:
Originally Posted by zipfer View Post
Hi you should not worry, if your gearbox had no oil then it would never survive 1600km. I think you are safe. But always better to be safe then sorry so you should go asap to the workshop.
Yea, thats what the mecanic said. But quality control concerns me, what about the rest of the bike??? First i did when i got the bike was to tighten a bunch of loose bolts and nuts, protection covers loose etc. I really love the bike and the ride but squeaking rear swingarm came after 900 kms and the factory have send new bearings and rubber seals. I would like it to last a long time and it does not look promising. Yamaha dealer and factory have splendid service and do take responsibility though. But after warranty is off time...........concerns.....

Vidar
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 01:08.
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.

  XT660         Archive   Main site


Footer
vBSkinworks Top