Hej oldmekker, PM sent!

yeah...but...camera's knackered and no photo host at the moment anyway so no pics...
Maybe these as compensation?!

Cases are now split with flywheel still attached to crank. No problems.
Gear cogs looked very good for 56000kms and I'll only replace a couple for peace of mind and hoping they'll maybe last another 50000kms! :biggrin:
No other issues found and bore will most likely get away with a hone and I'll ...

Thanks Rick, I'll leave the flywheel as it is then and get on with the splitting!

Gentlemen, I need some advice.
I have a 3AJ engine with 56000kms on it so I'm taking it apart to check and replace worn gears.
Had a peak down the engine and it looks like the 5th gear has started to wear through the hard face.

So the plan is to split the cases and change those cogs. And, as usual ...

Keep up the good work dunc! Your spirit definitely deserve some

On this german site are listed the 3AJ's models that had the altitude compensator thingy (Part number 2WJ-14303-01-00):
http://www.xt-foren.de/dcforum/dcboard.php?az=show_topic&forum=287&topic_id=7540&mesg_id=7540&page=

I've looked thru some of the fiche for the 3AJ years on this russian site:
http ...

55W1985 wrote:The altitude barometer diafragma was only stock on swiss models.That i what I read so far on swiss tenere forums.

My 1990 3AJ is imported from Germany so maybe it was stock there too!?

We've got the fiche on this site?

Mezo.

You mean the Service Manual for XT600Z(U) '88 in the section: Manuals, part numbers, diagrams?
I didn't find it in those micro fiche. Maybe the altitude compensator wasn't on all 3AJ model years!?

Also on that russian site the part isn't shown on the carb ...

Hiya Mats,

didn't know what it did until yesterday when I decided to google it.

Just out of interest, how exactly do you google an unknown part on your bike? I've tried typing "thingumy" and "whatchumacallit" and haven't got anywhere. Do you put in the part number or something?
This is a skill ...