Front Diff and Transfer Case Oil Change Howto

how much oil do you need for all of that

 

Takes 6 quarts to do all 3. I think it's in the OP how much each takes.

 

AdamH,

What Boucher said.

Rear took just over 4.
Transfer just over 1.
Front to go!

I didn't use a pump for either. Just tilted the bottles and whatever I couldn't get out of each bottle I poured into new ones...not ideal but works.

As for the front, I think it might be too tight in there to do the "tilt the bottle method" I might have to get a pump.


Mike

 

SubD

 

Never even thought to try dumping the oil in mine, I bet it was easier than the million pumps it probably took to fill all 3! Guess I'll try that next time.

 

Just knocked this off today.....Front and rear diffs, transfer case, engine oil and filter and lubed driveshaft. Thanks to the OP and all the contributors to this thread, great stuff!

 

Hey, what are the part numbers for the crush washers for 2nd gen for rear + front diff and transfer case? I got them from some thread, can't find it now, 90430-18008(qty. 4),

$21 12157-10010 Toyota Oil Drain Plug Crushable Steel Gaskets Set of 10 OEM 12157-10010

12157-10010(qty. 3), and

$8 90430-24003 Front Differential Drain Plug Gasket

90430-24003(qty. 1) ? are those right?

 

Excellent! Thank you, OP!

 

What is the recommended fluid change interval for differentials and T-Case?? 30,000 miles or 30,000Kms...My dealer guy said I don't need it at 77000kms...they bugging??

 

I did mine at 30 & 60 - next one 90

 

Pretty sure I read somewhere that the change interval is 30,000 miles. Check your owners manual if you really want to know. I changed mine around 20k because I drove through some pretty deep water while off roading.

 

This is my first official post excluding my hello. Yesterday I change my F/R diff lube and xfer case lube. Switched both to Royal Purple

$30 75w-90 Synthetic Gear Lube - 1 Quart (Pack of 2)

75w-90. Side note is that Advance Auto will price match. I told the guy that Amazon had it listed for $14.94, he typed that price into the Advance system and said we are good to go. Never hurts to ask. I hate to admit it but I waited until almost 80k before doing this. My truck is an 09 and has never been in the water or offloading. The front diff lube was pretty dark, but the xfer case oil looked like honey. The rear was not quite as dark as the front. Thanks for all the info that this site provides. As noted in my hello post I used to turn wrenches for a living, but that is getting further and further behind me(1991....gulp). Having a resource like this site is golden for those of us that don't work on cars/trucks all the time. Keep the great info coming. I have a couple of small tips for those changing front wheel bearings that i will post in a different thread.
Richard

 

Hey guys. Just wanted to show a cheap, easy, disposable fill rig for your gear /manual trans oil fills. It works really well. You will need a 1/2" drill bit, 2 or 3 feet of 1/2" OD tubing, 2 cable ties, a ball inflation needle and pump, and something sharp to poke a small hole in your bottles. ***Disregard the copper hook and hose clamp. The sharpness of the fill hole threads will keep the tubing in place while filling*** Setup looks like this:



Amsoil tops are really big, so the hole size was no problem. Adapt tubing size as necessary. Punch a small hole above the fluid line in the bottle, and use hand pump to pressurize the bottle and drive the fluid out. I would be careful using a compressor for obvious reasons, not to mention the wife will go to that *ss if you ruin a load of laundry with a gear oil soaked shirt. Ready to go, it looks like this:



Some learning points that I frigged up the first time:

1) Clean fill and drain plugs really well the day before to eliminate foreign material issues.
2) As mentioned earlier, leave off the copper hook. 1/2" OD tubing will stay in on it's own.
3) Poke a very small hole in the bottle and force needle into it. You can empty the bottle with a very few pumps if you have no leakage at the needle. Maybe vise grips and tiny finishing nail. The awl that I used could make the hole too big if pushed too far in.
4) Don't use regular gear lube in the manual transmission...It shifted like crap when I did. Had to refill with Manual Transmission lube (GL-4). 30 or so extra bucks whizzed away, but it's okay now.
5) Use an empty bottle to put the fill hose in as you move between the diffs/transfer case.
6) Fits well in a gallon freezer bag if you want to reuse it.
7) Use two cable ties attached together under the cap so tubing leaves the bottle straight. Chop the hose on the bottle end at an angle and leave it plenty long to get all the way down into the corner of the bottle.
8) Transfer cap/hose to full bottle and punch when previous bottle empties.
9) Be prepared to pull needle out of the bottle when you think you are getting close to full to instantly depressurize the hose.



Good luck!

 

I just did this yesterday. Had no issues getting bolts off. My transfer pump sucks though. I definitely need something better, but I have a urgent question.
I had no way of measuring 1.6 quarts. So I filled till it started coming out the drain plug. Is this bad to do or am I okay? I can't afford to ruin a diff or anything especially over something like this.
Thanks for any advice!

 

Yea..I was changing my diff fluids and my friend(who's been a mechanic for many years) was just..put it in till it comes out and zip her up!

 

I do this every time as well.

 

No need to be scientific or spot on when it comes to gear oil cases... Make sure the truck is level then fill to top of the fill hole.

 

Did the front, transfer, and the rear today. All with Royal Purple

$30 75w-90 Synthetic Gear Lube - 1 Quart (Pack of 2)

75w-90. Got the new washers at the Toyota dealer $19, ouch!!! Super easy , I would grade it a 1 for difficulty. I am at 31000 and I have read the recommended is 30000, 60000, 90000, etc. Definitely recommend for DIY guys.

 

This is solid info. Thanks for posting.

 

sub

I NEED to do this. It is LONG overdue! Great write up! Hopefully it is as easy as it looks!