bonjour de france c900 airflows 87

[cece95]

Thanks a lot for your feedback..
In fact i said me that original crusch sleeve should be crushed .So i tapped on it for extended the sleeve a bit .I was at 18.80 when i removed the original and i put it at 19.10mm .I thought that the sleeve will "crush " again..But no ..Under 4 tonnes nothing .So i start solid sleeve at 19 mm . - 0.3 mm will not so hard to remove without machine .
For the prelaod i do the test with string and tensiometer around the bearing housing .Normaly saab give 4.7 kg to 7 kg when you pull , but i have read that some people changed preaload for "heavier " use .Maybe it should be better to have a few more than 7kg , I suppose that it should be increase the gear oil temp .I put a temp sensor on diff plate for monitor and if i need , install oil gear cooling system.

[SaabAero]

One of my old sleeves was 18,6mm and there was still a preload at that bearing.
I have a new crush sleeve with a length of 20,1mm.

To much preload is not good for the bearings. Maybe the bearing manufacturer can give any ideas ?

[SaabAero]

Maybe this can help ?
http://www.jp.nsk.com/app02/BearingGuid ... g22494.htm

[cece95]

Thanks a lot saabaero for your info and link ..

[Hamar]

Maybe this can help ?
http://www.jp.nsk.com/app02/BearingGuid ... g22494.htm

That's actually very informational site. It helped me a lot.

Thank you.

[cece95]

some new about my gearbox ..
I have finish the gearbox rebuilt , and upgarding .
It s looks like this :




What do you thinks about the gearbox front case ventilation port ??is it very important or not ??

inside ,
i put a solid crush sleeve , the good size for correct prelload is around 18.70mm
thanks for your link saabaero ..
I decrease the gap between selector finger , and forks by carring of material each side with mig .
Stock i was at 0.60 mm gap decrease to 0.15 mm


Final test on road wensday ..I will see what happened..

[SaabAero]

What do you thinks about the gearbox front case ventilation port ??is it very important or not ??

You need a ventailation hole.
If not, you will have a leakage in one of the axle sealings when the oil temperature goes upp and a overpressure builds up in the gearbox.

All gearboxes have some kind of breating filter.

Good idea to tighten the play in the shifting fingers. Hope it will work fine