KZ900 Tranny Bench Test: I know this has been discussed but....

Hey all,

I know this has been discussed previously where the output shaft needs to be spinning, the gears have to be perfectly aligned etc... but I still can't for the life of me figure this out.

Goes into first as most of you have posted, no problem. With output shaft spinning by hand, no go to second....

The service manuals (Haynes, Kaw KZ900 & KZ100 Shop Sevice) basically state just put it back together .:blink:
WTF with that, they're kidding right, this must be a miss print.

There has to be a way to test these tranny's damn it... :blink:

Anyone have any luck with this or methods for bench testing?

I just hate to put all this back together and find I have to remove the engine to split the cases once again... LOL!

Baffling...

Thanks,

Old Man Rock

You should just be able to spin the shaft where your countershaft sprocket goes by hand and be able to shift through all the gears. I never had a problem with the 650s bench testing with the neutral finder setup. The 900 is the same idea. There's no way you can really assemble wrong unless you removed the individual gears from the shafts.

Never removed the gears and from review of the service manuals all seem correct in orientations and placements on the shafts, no broken gears.

One manual states the same, with the upper case upside down, install your shafts, install the lower case insuring all 3 forks tubes are connected to the proper gear, spin and test.

Same results, no go.

This is why I'm wondering if there is something truly wrong with this setup and wanting to insure I have this right...

NOTE: My third shift fork for the drive shaft is installed on the shift drum itself. In review of the KZ1000 manual, separate rod for this shift fork...

Anyone with a 900 out there that has experience in this?

Also, with a non running kz900, are you able to shift through all 5 gears with or without the clutch pulled in?

Thanks

the neutral finder is stopping you.

you do need the transmission spinning to get into 2nd. I would not worry about it at all... Unless you've pulled the gears off the shaft, there really isn't much you can do wrong assembling it - provided you do put the selector forks in the engines... :.)

Hey Jeff,

"neutral finder is stopping you."
I'm assuming this is the spring loaded detent pin into the under side of the shift drum, correct?

Question, in backing pin this out, then would this be a way to check the gearing?

OMR

No the neutral finder is not on the shift drum and it's not a pin.

It's three little ball bearings on the output shaft under the gear that keep it from sliding into position unless there is enough centrifugal force to move the ball bearings outward out of the holes.

Edit;

Beat Ron by seconds

I think his idea that you are not spinning the shaft fast enough is probably true, especially with the clutch installed.

The neutral finder is 3 ball bearings that sit in holes in the shaft. When the shaft is spinning, these balls are flung outwards enabling the gear to slide on the shaft. When the shaft is not spinning, the balls keep the gear from sliding. Maybe you are just not spinning the shaft fast enough.

Ah so.... me understande now...

Well then I'm not the only one... I'll go with your statements and not worry about it for all gears, bearings, splines look good.

Thanks,

OMR

You can remove this stuff if you wanted to, but it's a great feature. Try finding neutral on some of the other bikes out there, and you'll really appreciate this feature.

Most drag-racers do remove this stuff - mainly to do burnouts in 2nd gear.