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GV SQ420 loud whining in all gears except 4th

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aaronstevens

Joined: Mon Jul 07, 2014 6:28 pm
Posts: 68
Location: Cessnock
Vehicle: Grand Vitara 98 2.0 petrol

Posted: Sun Aug 23, 2015 9:21 am

G'day guys I have a loud buzzing/whining in all my gears except 4th gear , also had some leaking transfer case oil that I have been topping up , anyone got any idea what the problem is ?

fordem

Joined: Mon Apr 19, 2010 11:30 pm
Posts: 2656
Location: Georgetown, Guyana
Vehicle: APK416, A6G415, A6N415

Posted: Sun Aug 23, 2015 11:37 am

Probably a worn bearing in the transmission - input shaft would be my guess - fourth gear is a "direct drive" so the input shaft will also be supported by the selector hub behind it, in the remaining gears that does not happen.

henno

I live here!

Joined: Tue Jul 23, 2013 5:56 pm
Posts: 2439
Location: Brisbane
Vehicle: Which one?

Posted: Sun Aug 23, 2015 12:24 pm

Fordem is on the money, as usual. That will be exactly what it is.

watermouse

az supporter

Joined: Wed Nov 18, 2009 10:30 pm
Posts: 868
Vehicle: zook

Posted: Sun Aug 23, 2015 1:10 pm

Yep,
Here is a great video that says that same thing and goes into the overhaul of a suzuki manual gearbox.

Flx11e

Joined: Wed Feb 11, 2009 10:30 pm
Posts: 87
Location: Dalgety

Posted: Sun Aug 23, 2015 2:30 pm

Check the layshaft bearings.

fordem

Joined: Mon Apr 19, 2010 11:30 pm
Posts: 2656
Location: Georgetown, Guyana
Vehicle: APK416, A6G415, A6N415

Posted: Sun Aug 23, 2015 11:45 pm

Layshaft bearings are a possibility - there is no load on the layshaft in fourth gear - it's just that the input shaft bearing is a fairly common failure...

Truth be told, I wouldn't pull down the transmission to change just one bearing - if I go in there, I'll be changing all the bearings and seals - I actually have done it once, I had the input shaft bearing fail about six months after a rebuild, so I changed that one alone, but in situations where the condition of the bearings is unknown, it doesn't make sense to put that much effort into the repair for one bearing, you're going to end up pulling it apart again.

Here's a hint - make sure the vehicle is level when you refill the transmission after a rebuild - I have no proof, but I strongly suspect that was the cause of the premature failure mentioned above.

aaronstevens

Joined: Mon Jul 07, 2014 6:28 pm
Posts: 68
Location: Cessnock
Vehicle: Grand Vitara 98 2.0 petrol

Posted: Mon Aug 24, 2015 1:35 pm

Okay sweet , thanks for all the info !

aaronstevens

Joined: Mon Jul 07, 2014 6:28 pm
Posts: 68
Location: Cessnock
Vehicle: Grand Vitara 98 2.0 petrol

Posted: Mon Aug 24, 2015 6:25 pm

Would it be cheaper for me to just buy a whole new gearbox, I got quoted $2200 for it to be refurbished .

fordem

Joined: Mon Apr 19, 2010 11:30 pm
Posts: 2656
Location: Georgetown, Guyana
Vehicle: APK416, A6G415, A6N415

Posted: Mon Aug 24, 2015 11:47 pm

That might be a personal decision.

Can you find a "whole NEW gearbox"? At what price??

If you really mean a used gearbox, do you actually know what you're getting, and how long before you end up back where you are now, or in a worse position?

aaronstevens

Joined: Mon Jul 07, 2014 6:28 pm
Posts: 68
Location: Cessnock
Vehicle: Grand Vitara 98 2.0 petrol

Posted: Wed Aug 26, 2015 4:49 pm

Will a short wheel base j20a manual 98 gearbox fit my long wheel base j20a manual 98 ?

Gwagensteve

Joined: Thu Feb 26, 2009 10:30 pm
Posts: 13007
Location: Melbourne

Posted: Wed Aug 26, 2015 4:51 pm

Yes..

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