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Main : Misc : Tech Section broken gearbox

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broken gearbox
broken gearboxPopular
SubmitterDatsunSSSMore Photos from DatsunSSS   Last Update2008/12/11 20:06    Tell a friendTell a friend
Hits3229  Comments7    0.00 (0 votes)0.00 (0 votes)
One bearing is completelly destroyed !!!

How can i see if the syncros are bad?

the 2 and the 3 gear didnt shift very well , thats why i say the syncros are bad, but that problem could be the cause wend the bearing started to crack??????

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The comments are owned by the poster. We aren't responsible for their content.

Poster Thread
Asblik
Posted: 2008/12/12 3:21  Updated: 2008/12/12 3:21
Not too shy to talk
Joined: 2008/10/17
From: Centurion, ZA
Posts: 26
 Re: broken gearbox
Put the syncro on the gear. Put a bit of pressure un the syncro and turn it. If the syncro turn free it is bad. The syncro must have a bit of grip on the gear when you turn it.

Regards

Poster Thread
revhead001
Posted: 2008/12/13 7:42  Updated: 2008/12/13 7:42
No life (a.k.a. DattoMaster)
Joined: 2008/3/15
From: Melbourne
Posts: 2742
 Re: broken gearbox
The bearing you are pointing at is a tapered roller bearing. When you pulled the front nosecone off was there a shim for the layshaft? It is unusual for a tapered roller to completely destroy itself when it has proper endfloat.

Edit. My bad. Thinking of the 63a dogleg.

Poster Thread
datski620
Posted: 2008/12/13 8:00  Updated: 2008/12/13 8:00
No life (a.k.a. DattoMaster)
Joined: 2008/3/30
From: Albany, Perth Australia
Posts: 7147
 Re: broken gearbox
i hate gearboxes with a passion.....stupid bearings. when my old 4 spped went the reverse snapped into 3 and ate the rest of the gears while it was at it. All i could see when i drained the oil was chunks of metal, so i handed in the gearbox for a swap for a new one. felt better i didnt have to look at it

Poster Thread
ddgonzal
Posted: 2008/12/13 8:56  Updated: 2015/10/13 3:20
Moderator
Joined: 2001/5/3
From: 48 North
Posts: 31645
 Re: broken gearbox
That's first gear. In the 56 5-speed it is a ball bearing.

32223-H7200 BEARING-ball, counter shaft


56-series 5-speed gearset

Poster Thread
DatsunSSS
Posted: 2008/12/13 19:22  Updated: 2008/12/13 19:22
Home away from home
Joined: 2003/2/14
From: Portugal
Posts: 472
 Re: broken gearbox
yes it is a bearing ball.

thanks DD

weere did you get this image?

do you have the entire manual of my gearbox?

Poster Thread
ddgonzal
Posted: 2008/12/13 20:19  Updated: 2008/12/13 20:19
Moderator
Joined: 2001/5/3
From: 48 North
Posts: 31645
 Re: broken gearbox
hi dsss, it is from the parts catalog. I do not have the repair manual.

Poster Thread
ddgonzal
Posted: 2015/10/13 3:14  Updated: 2015/10/13 3:18
Moderator
Joined: 2001/5/3
From: 48 North
Posts: 31645
 Re: broken gearbox
Seems like the only common way for the ball bearing to go bad is low oil (lack of lubrication). Although if the wrong thickness thrust washer is installed, it might suffer from side movement.

More detail on this part:

Counter Gear