Go Back   Club Lexus Forums > Lexus Model Forums > GX Models > GX - First Generation
Sign in using an external account
Register Forgot Password?

How to Change Front & Rear Differential Gear oil on GX ( Tutorial )

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 08-04-10, 01:44 PM   #16
Turbinator
Lead Lap
Trader Score: (0)
 
Turbinator's Avatar
 
Join Date: Sep 2008
Location: CA
Posts: 714
Send a message via Yahoo to Turbinator
Default

Apologies for reviving this old thread, but I went to the Lexus dealership today and was advised of something about the gaskets.

The guide provided says to buy the following gaskets:

QTY 2, 12157-10010
QTY 1, 90430-24003
QTY 1, 12155-10010

Total of 4 gaskets.


What I ended up actually walking away with at the dealership:

QTY 3, 12157-10010
QTY 1, 90430-24003

The service guy there has never heard of the 12155-10010. Was this a typo in the PDF guide?

Turby
This ad is not displayed to registered members.
Register your free account today and become a member on Club Lexus!
Turbinator is offline   Reply With Quote
Old 08-06-10, 08:50 AM   #17
mann777
Moderator
Trader Score: (0)
 
mann777's Avatar
 
Join Date: Apr 2006
Location: EARTH
Posts: 1,161
Default

Hi Turby, you r rite, typo error, the screen dump of part screen.
Attached Images
 
__________________
LS400-1994/GX470-2004(KDSS) (HIS)
**********************
Ability is what you're capable of doing...
Motivation determines what you do...
Attitude determines how well you do it.
mann777 is offline   Reply With Quote
Old 08-27-10, 06:00 PM   #18
phillip75
Driver School Candidate
Trader Score: (0)
 
Join Date: Apr 2008
Location: california
Posts: 20
Default gear oil leak

Hi guy i had gx470 2003 my car now 135000 mile on it now gear oil is leak from my driver front down , can you help me what i need to buy to change this leaking and do i need change all gear oil front and back too please help thanks
phillip75 is offline   Reply With Quote
Old 10-09-10, 09:14 PM   #19
Turbinator
Lead Lap
Trader Score: (0)
 
Turbinator's Avatar
 
Join Date: Sep 2008
Location: CA
Posts: 714
Send a message via Yahoo to Turbinator
Default

Hi everyone,

I finally got off my lazy butt and changed my rear diff oil (as a start). I have ramps, but I didn't want to ramp the car up backwards in my garage, so I simply laid down my trusty blanket, and crawled under the car to check out the rear diffs. Guess what, the GX has so much clearance, I was able to get under there, spot the fill and drain plugs, put the socket onto the plug, and use a rubber mallet to tap the plugs loose. I then used my trusty oil pump to refill once the oil had drained out. I did not replace the plugs but did replace the crush washers instead. I wiped the magnetic drain plug of any particles, there were only a few, not a lot. Vehicle is at 31K miles right now. Took me 1 hour to get the rear done, most of that time was waiting time, waiting for the old oil to drip out into my oil pan. Good times. I took some pics of the process but with the process so well documented, I'm not sure we need more pics.

Anyway, went well, I'm satisfied, and now I'll set aside another weekend to tackle the front. I'm going to do the oil, diffs, and transfer case all at the same time, since it's all up in front. Cool.

Quote:
Originally Posted by phillip75 View Post
Hi guy i had gx470 2003 my car now 135000 mile on it now gear oil is leak from my driver front down , can you help me what i need to buy to change this leaking and do i need change all gear oil front and back too please help thanks
Sounds like you may need to replace the drain plugs and the washers, but who knows. Maybe there's a crack in the case somewhere. You may want to get this type of thing checked out by the dealer, unless someone else more knowledgeable than me can offer you some advice. Good luck!

Turby
Turbinator is offline   Reply With Quote
Old 10-16-10, 05:04 PM   #20
Turbinator
Lead Lap
Trader Score: (0)
 
Turbinator's Avatar
 
Join Date: Sep 2008
Location: CA
Posts: 714
Send a message via Yahoo to Turbinator
Default

In case you weren't already tired of hearing from me and my adventures on my GX... Did the oil today, replaced with Mobil 1 synthetic 10W30 and a FRAM TG3614 filter from Walmart. That was easy, as I had done this before and knew the steps already.

Took off the center skid plate to access the front diffs today. With both skid plates off, I took the time to get some soap and water to clean them up. While they dried off, I worked on trying to get the front diff bolts loose. Wowee, those were really tough. The fill bolt was pretty tough, but I managed to get that one free. The drain bolt was another story. I had a cheapo 3/8" extension that I was using, and while I was trying to loosen the drain bolt, the extension actually warped! It wasn't an expensive one, so I hopped in my other car and went to Sears to buy a Craftsman 3/8" 3" extension as a replacement. While I was at it, I grabbed a 1/2" drive to 3/8" drive adapter, to allow me to drive the 10mm hex driver with my 1/2" Craftsman socket wrench. Finally, grabbing the front suspension with my two hands and pushing with my foot, I was able to break the drain bolt free. No damage to the bolt or to my tools, and I was happy.

Used my oil pump to put in approximately 1.5 quarts of the 75W90 synthetic gear lubricant, until it started to stream back out of the fill hole. Replaced the washers on both the drain and the fill, and put everything back together.

Next, the transfer case. The fill bolt was pretty easy to break open, and the drain bolt wasn't too hard either. Used the 24mm socket with my 1/2" socket wrench. Good to go here. Filled up until the 75W90 oil started to stream back out, then quickly plugged it up. The transfer case is located in the middle of the car, and didn't seem to be directly under the driver's seat as I've seen some postings suggest.

Total time spent on this project was about 6 hours, most of it being waiting time letting the oil drip out, this included an hour for lunch, plus going to the store to replace my bent 3/8" extender. I do think that next time I could do this a bit faster now that I have everything lined up.

Turby

Last edited by Turbinator; 10-18-10 at 05:11 PM..
Turbinator is offline   Reply With Quote
Old 10-18-10, 01:13 PM   #21
Booyah
Lexus Test Driver
Trader Score: (0)
 
Booyah's Avatar
 
Join Date: Aug 2004
Location: Alaska
Posts: 1,419
Default

Im changing out all my diffs/xfer case fluids this week--I have only 14K on mine but figured time to get the old factory stuff out anf fill with Amsoil!
__________________
2008 GX-470 BLIZZARD PEARL | 5K HID'S FOGS/LOW BEAMS
2008 BMW 335XI -Wifes Ride | White
www.xenondepot.com
Booyah is offline   Reply With Quote
Old 10-18-10, 02:36 PM   #22
redrocks
Lexus Test Driver
Trader Score: (0)
 
Join Date: Oct 2008
Location: VA
Posts: 1,308
Default

Mann,

Thanks for posting, it's people like you that make my life better!
redrocks is offline   Reply With Quote
Old 10-18-10, 05:12 PM   #23
Turbinator
Lead Lap
Trader Score: (0)
 
Turbinator's Avatar
 
Join Date: Sep 2008
Location: CA
Posts: 714
Send a message via Yahoo to Turbinator
Default

Quote:
Originally Posted by Booyah View Post
Im changing out all my diffs/xfer case fluids this week--I have only 14K on mine but figured time to get the old factory stuff out anf fill with Amsoil!
Good luck on those drain bolts, they were a royal pain. Good thing the 10mm bolt has a deeply recessed socket head.. otherwise, I would have most certainly been in trouble trying to get that one off the car.

Turby
Turbinator is offline   Reply With Quote
Old 10-18-10, 05:16 PM   #24
Booyah
Lexus Test Driver
Trader Score: (0)
 
Booyah's Avatar
 
Join Date: Aug 2004
Location: Alaska
Posts: 1,419
Default

Hopefully since its still fairly new it wont be bad--but I bet factory torques the heck out of them
__________________
2008 GX-470 BLIZZARD PEARL | 5K HID'S FOGS/LOW BEAMS
2008 BMW 335XI -Wifes Ride | White
www.xenondepot.com
Booyah is offline   Reply With Quote
Old 10-18-10, 09:05 PM   #25
mann777
Moderator
Trader Score: (0)
 
mann777's Avatar
 
Join Date: Apr 2006
Location: EARTH
Posts: 1,161
Default

That is why I had mentioned in the DIY use a Fibre mallet and tap a few times on the bolt itself, the tensile grip loosens, it is a peice of cake later on.
__________________
LS400-1994/GX470-2004(KDSS) (HIS)
**********************
Ability is what you're capable of doing...
Motivation determines what you do...
Attitude determines how well you do it.
mann777 is offline   Reply With Quote
Old 10-18-10, 09:12 PM   #26
hammer0008
Rookie
Trader Score: (0)
 
hammer0008's Avatar
 
Join Date: Nov 2004
Location: Canada
Posts: 78
Default

Quote:
Originally Posted by Turbinator View Post
In case you weren't already tired of hearing from me and my adventures on my GX... Did the oil today, replaced with Mobil 1 synthetic 10W30 and a FRAM TG3614 filter from Walmart. That was easy, as I had done this before and knew the steps already.

Took off the center skid plate to access the front diffs today. With both skid plates off, I took the time to get some soap and water to clean them up. While they dried off, I worked on trying to get the front diff bolts loose. Wowee, those were really tough. The fill bolt was pretty tough, but I managed to get that one free. The drain bolt was another story. I had a cheapo 3/8" extension that I was using, and while I was trying to loosen the drain bolt, the extension actually warped! It wasn't an expensive one, so I hopped in my other car and went to Sears to buy a Craftsman 3/8" 3" extension as a replacement. While I was at it, I grabbed a 1/2" drive to 3/8" drive adapter, to allow me to drive the 10mm hex driver with my 1/2" Craftsman socket wrench. Finally, grabbing the front suspension with my two hands and pushing with my foot, I was able to break the drain bolt free. No damage to the bolt or to my tools, and I was happy.

Used my oil pump to put in approximately 1.5 quarts of the 75W90 synthetic gear lubricant, until it started to stream back out of the fill hole. Replaced the washers on both the drain and the fill, and put everything back together.

Next, the transfer case. The fill bolt was pretty easy to break open, and the drain bolt wasn't too hard either. Used the 24mm socket with my 1/2" socket wrench. Good to go here. Filled up until the 75W90 oil started to stream back out, then quickly plugged it up. The transfer case is located in the middle of the car, and didn't seem to be directly under the driver's seat as I've seen some postings suggest.

Total time spent on this project was about 6 hours, most of it being waiting time letting the oil drip out, this included an hour for lunch, plus going to the store to replace my bent 3/8" extender. I do think that next time I could do this a bit faster now that I have everything lined up.

Turby
Can you comment on the fluid colors? Dirtiest to cleanest etc...Also do you notice a ride difference? 31k service seems a bit premature.
__________________
ham
gx470 2007 Cypress pearl Led stop + int, hid6000
hammer0008 is offline   Reply With Quote
Old 10-18-10, 10:31 PM   #27
Booyah
Lexus Test Driver
Trader Score: (0)
 
Booyah's Avatar
 
Join Date: Aug 2004
Location: Alaska
Posts: 1,419
Default

Did all my fluids and they looked dirty and only had 14K on it! Im sure the oil was fine though, but I wanted Amsoil synthetic in there so I did it way early
My drain bolts were Simple to get off--no issues at all.
__________________
2008 GX-470 BLIZZARD PEARL | 5K HID'S FOGS/LOW BEAMS
2008 BMW 335XI -Wifes Ride | White
www.xenondepot.com
Booyah is offline   Reply With Quote
Old 10-19-10, 11:38 AM   #28
Turbinator
Lead Lap
Trader Score: (0)
 
Turbinator's Avatar
 
Join Date: Sep 2008
Location: CA
Posts: 714
Send a message via Yahoo to Turbinator
Default

Quote:
Originally Posted by hammer0008 View Post
Can you comment on the fluid colors? Dirtiest to cleanest etc...Also do you notice a ride difference? 31k service seems a bit premature.
I actually didn't think the transfer case oil was too dirty, and the diffs didn't appear too dirty either. There weren't very many metal shavings on the magnets for the front / rear diffs. Nonetheless - I felt better knowing that changing the oil now buys me another 30K miles before they need to be looked at again.

I didn't really notice a ride difference. Psychologically, I wanted to think it was smoother, but I couldn't really discern a big difference.

Now, the motor oil definitely was dirty - last time I changed it was in Sept 2009. I figure yearly is good given the low mileage - the car only had 4K miles on it since I last changed it.

Turby
Turbinator is offline   Reply With Quote
Old 10-19-10, 07:31 PM   #29
Booyah
Lexus Test Driver
Trader Score: (0)
 
Booyah's Avatar
 
Join Date: Aug 2004
Location: Alaska
Posts: 1,419
Default

What do I need to do the front diff bolts? thats all I have not done yet and it seems I dont have the right tool needed
__________________
2008 GX-470 BLIZZARD PEARL | 5K HID'S FOGS/LOW BEAMS
2008 BMW 335XI -Wifes Ride | White
www.xenondepot.com
Booyah is offline   Reply With Quote
Old 10-19-10, 10:31 PM   #30
Booyah
Lexus Test Driver
Trader Score: (0)
 
Booyah's Avatar
 
Join Date: Aug 2004
Location: Alaska
Posts: 1,419
Default

Got it----its a 10mm hex...
__________________
2008 GX-470 BLIZZARD PEARL | 5K HID'S FOGS/LOW BEAMS
2008 BMW 335XI -Wifes Ride | White
www.xenondepot.com
Booyah is offline   Reply With Quote
Old 10-19-10, 10:31 PM
 
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
JasonChang 2ISGFM Build Thread JasonChang Build Threads 80 11-11-13 10:17 PM
WA IS3_FTW FS thread *pics 5/27/12* post #2 IS3_FTW 1Gen IS300 Classifieds (98-05) 13 05-25-13 06:02 PM
CA FS: 1jz stock turbos, EBC brake pads OneJay SC400 / 300 Classifieds 3 12-04-12 09:38 AM
TN FS, Even more parts Cleaned Up From Last Sale sakataj 2Gen GS430 / 400/ 300 Classifieds (98-05) 60 07-01-11 03:11 PM
FL FS: Wilwood BBK, BCR Coils, Vossen CV1, Falken JMcDonald 2Gen IS250 / IS350 / IS-F Classifieds (06-13) 13 05-28-11 09:40 PM


Tags
470, cruiser, diff, differential, differentials, es250, front, gear, gx, land, lexus, metal, mt, oil, rear, replace, rx330, shavings

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

All times are GMT -7. The time now is 01:39 AM.

Join ClubLexus
Advertising


Copyright © 2000-2008 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS


Get all contact info