Inside a CVT - Nissan Murano

turbizzy · 01-13-2012, 04:41 AM

So even though they don't technically want us rebuilding them entirely, Nissan has been letting us replace some internal components such as valve bodies, bearings, reduction gears, etc. Thought i'd share some pics with you guys of the "mysterious CVT".

These are from a late model Altima with the midsize of the 3 CVT's Nissan offers. New TSB for a bearing type rumbling sound has us inspect the reduction gear, diff gear and bearings and replace them in necessary.

The reduction gear is the middle medium sized gear, the larger one is the differential gear and the small one is the transmission output to the reduction.

turbizzy · 01-13-2012, 04:45 AM

These are pics of the steel belt inside the CVT. Its basically a belt made of hundreds of pyramid shaped steel plates riding one 2 opposing variable cones.

This is the top of the valve body

miloca1983 · 01-13-2012, 06:25 AM

Nice pics turbizzy! i dont know but it looks surprisingly "easy" to fix?

Pilgrim · 01-13-2012, 11:25 AM

Very interesting views, and great photos!! Thanks.

JayS · 01-13-2012, 01:56 PM

It's actually a lot less scary looking in there than I expected. I've always imagined a cartoonish bursting of springs and parts ala Tom and Jerry taking apart a watch if you ever opened one up.

Looking at that it makes me more upset that Nissan refuses to rebuild these or make parts available so a 3rd party could rebuild them.

tjmatx · 01-13-2012, 03:18 PM

Very cool stuff. And I agree, not as complex as I expected.

I have always heard that these CVTs are made by JATCO (Japan Automatic Transmission Company) for Nissan and others. Can you confirm that piece of info?

Orzel · 01-13-2012, 03:19 PM

Amazing! Quite the engineering feat designing one of those and making it work right. Nissan seems to be way ahead of the curve when it comes to CVT's.

**njjoe** · 01-13-2012, 05:47 PM

t-

Thanks for taking the time to take and post the CVT photos! It is very much appreciated.

Was this part of a training class? Is Nissan now looking to repair CVTs in-house instead of simply replacing them?

-njjoe

turbizzy · 01-14-2012, 03:12 AM

No problem guys. I don't know who makes the trannys but i know they're name branded "Xtronic".

Theres a little more to it than i can show you as they don't let us take the actual cones apart as they are extremely calibrated and they don't want anyone going in there and messing with that.

Ill get more pics whenever i come across more opportunities. This was at work but I have seen a completely dissassembled CVT at Nissan school although they kinda frown upon us taking pics of stuff so yea...

craig anderson · 01-14-2012, 06:55 AM

Turbizzy, you are always there for US with "hows that work" curiosity. We do appreciate your willingness to educate us. HAVE A great 2012. THANKS

**njjoe** · 01-14-2012, 11:04 AM

Quote:

Originally Posted by tjmatx

I have always heard that these CVTs are made by JATCO (Japan Automatic Transmission Company) for Nissan and others. Can you confirm that piece of info?

Yes, JATCO is the manufacturer of the MO's CVT.

Here is a link to the website of their US subsidiary: *NA Products

-njjoe

**zebelkhan** · 01-14-2012, 04:34 PM

Quote:

Originally Posted by turbizzy

...Theres a little more to it than i can show you as they don't let us take the actual cones apart as they are extremely calibrated and they don't want anyone going in there and messing with that...

Maybe that is why Nissan does not want any third party shop trying to repair theses CVTs.

nitely · 01-14-2012, 09:13 PM

Is it just Nissan to Jatco CVTs? Or does it apply to all car manufacturer that uses Jatco CVT? Having not heard of any explosion of information regarding CVT repairs in general...I assume that no one really has done it yet Jatco or any other CVT manufacturer.

turbizzy · 03-08-2012, 11:06 PM

Replaced reduction gear due to bearing damage, valve body and oil pump due to metal contamination and all seals.

Oil pump

Filter

nitely · 03-09-2012, 12:40 AM

Is this a learning exercise or is there an actual customer waiting for this CVT repair? Hopefully its the beginning of actual repairs to CVTs and eliminating the full replacement mandate of nissan.

01-13-2012, 04:41 AM	#1 (permalink)
turbizzy Registered User Join Date: Nov 2009 Location: SF Bay Area, CA Posts: 937	Inside a CVT So even though they don't technically want us rebuilding them entirely, Nissan has been letting us replace some internal components such as valve bodies, bearings, reduction gears, etc. Thought i'd share some pics with you guys of the "mysterious CVT". These are from a late model Altima with the midsize of the 3 CVT's Nissan offers. New TSB for a bearing type rumbling sound has us inspect the reduction gear, diff gear and bearings and replace them in necessary. The reduction gear is the middle medium sized gear, the larger one is the differential gear and the small one is the transmission output to the reduction. __________________ Izzy - MY PANDORA BODYKIT FOR SALE 04 Murano SE 05 Colorado ZQ8 85 Mustang SVO

01-13-2012, 04:45 AM	#2 (permalink)
turbizzy Registered User Join Date: Nov 2009 Location: SF Bay Area, CA Posts: 937	These are pics of the steel belt inside the CVT. Its basically a belt made of hundreds of pyramid shaped steel plates riding one 2 opposing variable cones. This is the top of the valve body __________________ Izzy - MY PANDORA BODYKIT FOR SALE 04 Murano SE 05 Colorado ZQ8 85 Mustang SVO

01-13-2012, 06:25 AM	#3 (permalink)
miloca1983 Registered User Join Date: May 2011 Location: hollywood, fl Posts: 117	Nice pics turbizzy! i dont know but it looks surprisingly "easy" to fix? __________________ 04 Murano SL AWD PAC IPOD controller Rockford Fosgate R1T-S tweeters Alpine SPR-60 6.5 cm front doors Polk DXI6500 6.5 cm component system rear doors JL Audio Slash 300/4v2 4 channel amp Rockford Fosgate r30012 powered 12" Subwoofer

01-13-2012, 11:25 AM	#4 (permalink)
Pilgrim Registered User Join Date: Dec 2009 Location: Fort Collins, CO Posts: 2,023	Very interesting views, and great photos!! Thanks. __________________ 2007 Murano 1983 280ZX Turbo 1994 BMW 325i

01-13-2012, 03:18 PM	#6 (permalink)
tjmatx Registered User Join Date: Sep 2011 Posts: 34	Very cool stuff. And I agree, not as complex as I expected. I have always heard that these CVTs are made by JATCO (Japan Automatic Transmission Company) for Nissan and others. Can you confirm that piece of info? __________________ 2011 SL AWD Tinted Bronze Roof rails with cross bars Rear bumper protector Illuminated door sills Splash Guards Cargo cover Factory floor mats and cargo mat Dealer window tint Clear front/hood bra

01-13-2012, 03:19 PM	#7 (permalink)
Orzel Registered User Join Date: Jun 2009 Location: Pacifc Northwest Posts: 361	Amazing! Quite the engineering feat designing one of those and making it work right. Nissan seems to be way ahead of the curve when it comes to CVT's. __________________ 2010 Lexus GS 350 AWD Smokey Granite Mica 2009 Murano LE Silver 2006 Lexus GS 300 AWD Flint Mica (gone) 2005 Lexus RX 330 Thundercloud (gone) 2007 Lexus IS 250 AWD Flint Mica(gone) 2001 Lexus RX 300 (gone) Si vis pacem, para bellum

01-13-2012, 05:47 PM	#8 (permalink)
njjoe Super Moderator Join Date: Jul 2005 Location: Jersey Shore (not THAT Jersey Shore, the real one) Posts: 11,737	t- Thanks for taking the time to take and post the CVT photos! It is very much appreciated. Was this part of a training class? Is Nissan now looking to repair CVTs in-house instead of simply replacing them? -njjoe __________________ 2005 SL AWD, Platinum -OEM HID conversion & HID fogs -OEM iPod interface -Upgraded (non-Bose) speakers - Pioneer TS-A1702C & TS-G1643R -Muth signal mirrors -Valley Industries hitch and wiring harness -Aluminum fuel tank shields

01-14-2012, 03:12 AM	#9 (permalink)
turbizzy Registered User Join Date: Nov 2009 Location: SF Bay Area, CA Posts: 937	No problem guys. I don't know who makes the trannys but i know they're name branded "Xtronic". Theres a little more to it than i can show you as they don't let us take the actual cones apart as they are extremely calibrated and they don't want anyone going in there and messing with that. Ill get more pics whenever i come across more opportunities. This was at work but I have seen a completely dissassembled CVT at Nissan school although they kinda frown upon us taking pics of stuff so yea... __________________ Izzy - MY PANDORA BODYKIT FOR SALE 04 Murano SE 05 Colorado ZQ8 85 Mustang SVO

01-14-2012, 06:55 AM	#10 (permalink)
craig anderson Registered User Join Date: Sep 2007 Location: texas Posts: 27	Turbizzy, you are always there for US with "hows that work" curiosity. We do appreciate your willingness to educate us. HAVE A great 2012. THANKS

01-14-2012, 09:13 PM	#13 (permalink)
nitely Registered User Join Date: Aug 2004 Posts: 1,415	Is it just Nissan to Jatco CVTs? Or does it apply to all car manufacturer that uses Jatco CVT? Having not heard of any explosion of information regarding CVT repairs in general...I assume that no one really has done it yet Jatco or any other CVT manufacturer.

03-08-2012, 11:06 PM	#14 (permalink)
turbizzy Registered User Join Date: Nov 2009 Location: SF Bay Area, CA Posts: 937	Replaced reduction gear due to bearing damage, valve body and oil pump due to metal contamination and all seals. Oil pump Filter __________________ Izzy - MY PANDORA BODYKIT FOR SALE 04 Murano SE 05 Colorado ZQ8 85 Mustang SVO

03-09-2012, 12:40 AM	#15 (permalink)
nitely Registered User Join Date: Aug 2004 Posts: 1,415	Is this a learning exercise or is there an actual customer waiting for this CVT repair? Hopefully its the beginning of actual repairs to CVTs and eliminating the full replacement mandate of nissan.

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