Why should we change the VLSD fluid?

Rusty · 12-01-2013, 04:48 PM

Ok, looking at that diagram. Part# 38760 is inside the carrier. That would be the VLSD unit that is sealed with silicone fluid. Your gear lube would be seperate from that. The bearings inside the housing is pinion bearing part#38120, and part#38140. 2 carrier bearings, left side and right side, part#38440. Those are lubed with your gear lube.

2011 Nismo#91 · 12-02-2013, 10:28 AM

Quote:

Originally Posted by Jordo!

I was about to comment, then it occurred to me that I wasn't sure which parts were directly affected by changing the dif oil either...

Here's an exploded view of the 370Z dif

Which parts are sealed and non-serviceable vs not?

Outer gears are affected by fluid change, whereas inner locking mechanisms are not?

Is that correct?

38760 Is the sealed VLSD Unit by the look and shape of it.

http://us1.webpublications.com.au/st...108266_7mg.jpg

Rusty · 12-02-2013, 12:20 PM

Quote:

Originally Posted by 2011 Nismo#91

38760 Is the sealed VLSD Unit by the look and shape of it.

http://us1.webpublications.com.au/st...108266_7mg.jpg

uh......that's what I said in my post.

2011 Nismo#91 · 12-03-2013, 07:45 AM

Quote:

Originally Posted by Rusty

uh......that's what I said in my post.

Well it's not like people read replies or even use search on this forum.

Alstann · 12-01-2013, 09:36 PM

To clarify - the VLSD uses seperate fluid, that is sealed within the LSD themselves. There is no servicing possible on this device. The diff fluid lubricates the gearing. The VLSD has it's own silicone fluid to act as the coupling.

onzedge · 12-02-2013, 06:56 AM

Quote:

Originally Posted by Alstann

To clarify - the VLSD uses seperate fluid, that is sealed within the LSD themselves. There is no servicing possible on this device. The diff fluid lubricates the gearing. The VLSD has it's own silicone fluid to act as the coupling.

Jordo! · 12-02-2013, 01:39 AM

^^^ Awesome -- thanks for clarifying, guys! Repped

cdoxp800 · 12-02-2013, 07:51 AM

Buy aftermarket Diff. Solves issues

Jordo! · 12-03-2013, 01:41 PM

In summary, the rear differential gears are lubed and serviceable, and should follow an OCI of some sort (30K for street use? 10-15k for track?), but the VLSD mechanism itself is a sealed unit within the pumpkin that is non-serviceable.

Rusty · 12-03-2013, 02:03 PM

Quote:

Originally Posted by Jordo!

In summary, the rear differential gears and bearings are lubed and serviceable, and should follow an OCI of some sort (30K for street use? 10-15k for track?), but the VLSD mechanism itself is a sealed unit within the pumpkin that is non-serviceable.

Fixed it.

TexasChuck · 12-04-2013, 12:42 PM

Well, that's kinda what I thought, but I went for it. Ain't the first time.
chuck

Rusty · 12-04-2013, 12:49 PM

Quote:

Originally Posted by TexasChuck

Well, that's kinda what I thought, but I went for it. Ain't the first time.
chuck

Didn't even need bait on the hook. "quick, get the net. He's swimming for the boat." LOL

kenchan · 12-04-2013, 01:55 PM

battle of the chucks in texas.

onzedge · 12-04-2013, 02:32 PM

Quote:

Originally Posted by kenchan

battle of the chucks in texas.

12-01-2013, 04:48 PM	#1 (permalink)
Rusty A True Z Fanatic Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 70 Posts: 35,571 Drives: 2011 Nismo GM 6M Rep Power: 2684440	Ok, looking at that diagram. Part# 38760 is inside the carrier. That would be the VLSD unit that is sealed with silicone fluid. Your gear lube would be seperate from that. The bearings inside the housing is pinion bearing part#38120, and part#38140. 2 carrier bearings, left side and right side, part#38440. Those are lubed with your gear lube. Jordo! likes this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html Last edited by Rusty; 12-01-2013 at 04:54 PM.

12-01-2013, 09:36 PM	#5 (permalink)
Alstann Track Member Join Date: Oct 2011 Location: South Florida Posts: 882 Drives: 12 PW 370z 6MT Sport Rep Power: 16	To clarify - the VLSD uses seperate fluid, that is sealed within the LSD themselves. There is no servicing possible on this device. The diff fluid lubricates the gearing. The VLSD has it's own silicone fluid to act as the coupling. onzedge and Jordo! like this. __________________ 2012 Pearl White 370Z GReddy Twin Turbo

12-02-2013, 01:39 AM	#7 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 420	^^^ Awesome -- thanks for clarifying, guys! Repped Rusty likes this. __________________ Enjoy it. Destroy it.

12-02-2013, 07:51 AM	#8 (permalink)
cdoxp800 A True Z Fanatic Join Date: May 2009 Location: FL Posts: 1,337 Drives: 2011 Nismo Rep Power: 21	Buy aftermarket Diff. Solves issues __________________ 2011 Brilliant Silver NISMO 370z. #: 0046. PPE LTH \| MillSpec Cats \| F.I Exhaust \| Akuma Intakes \| Rotora 6/4 Brakes

12-03-2013, 01:41 PM	#9 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 420	In summary, the rear differential gears are lubed and serviceable, and should follow an OCI of some sort (30K for street use? 10-15k for track?), but the VLSD mechanism itself is a sealed unit within the pumpkin that is non-serviceable. 2011 Nismo#91 likes this. __________________ Enjoy it. Destroy it.

12-04-2013, 12:42 PM	#11 (permalink)
TexasChuck Track Member Join Date: Oct 2012 Location: SE Texas Posts: 556 Drives: 2014 Black Cherry Co Rep Power: 15	Well, that's kinda what I thought, but I went for it. Ain't the first time. chuck

12-04-2013, 01:55 PM	#13 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141522	battle of the chucks in texas.

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