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post #1 of 19 (permalink) Old 01-02-2012, 06:35 AM Thread Starter
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transfer case - how does it work

I have a 2006 and inadvertanly drained about 4 ounces of tranfer case fluid out. So its very low or close to out right now.
Does the transfer case only work when the car is in 4 wheel drive, or is it always working?
Wasnt sure if i could push this job off till next week, or should i take care of it right now.
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post #2 of 19 (permalink) Old 01-02-2012, 09:08 AM
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depends.....

2x4 with on demand 4WD feature or 4X4?

you can't simply add the required fluid?

Bob
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post #3 of 19 (permalink) Old 01-02-2012, 12:33 PM
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I think you lost about a quarter of the oil. I think you could do some easy driving for a while.

I think the transfer case is always driving the front part of the drive shaft.

The transfer case/transmission assembly is shown in this: http://www.google.com/url?sa=t&sourc...giGIAA&cad=rja

http://share.qclt.com/%E4%B8%B0%E7%9...tem/030000.pdf has diagrams including one that I would call a mechanical schematic diagram.

Capacities are shown in http://share.qclt.com/%E4%B8%B0%E7%9...l/03000310.pdf

2009 V6 4wd Base
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post #4 of 19 (permalink) Old 01-02-2012, 11:03 PM
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The transfercase on the rav4 spins all the time.
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post #5 of 19 (permalink) Old 01-03-2012, 04:45 AM
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I would top it up. It's an expensive piece and while 4oz shouldn't be a problem, why risk it? Keep in mind that the transfer case oil should be changed every 60K anyway.

2007 Red Limited V6 4WD
w/ Tow package
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post #6 of 19 (permalink) Old 01-03-2012, 10:45 AM
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Quote:
Originally Posted by arries289 View Post
Keep in mind that the transfer case oil should be changed every 60K anyway.
With our RAV in my garage awaiting ignition coils at 96K guess it's a good time for some fluid changes - and the rear wiper reversal - and the backup light mod ....

Fred
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post #7 of 19 (permalink) Old 01-03-2012, 12:07 PM
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Quote:
Originally Posted by arries289 View Post
I would top it up. It's an expensive piece and while 4oz shouldn't be a problem, why risk it? Keep in mind that the transfer case oil should be changed every 60K anyway.
My 2009 Scheduled Maintenance Guide does not show a scheduled change for the transfer case. It shows to inspect every 15000 miles (as it does for the brake lines and several other things). I suspect the inspection at the dealer would only be looking for signs of leakage rather than checking the actual level or other aspect. It shows to change each (as I interpret) 15000 in which you did towing.

I am not saying changing at 60K is not a good idea-- especially if you are going to go top up anyway, but it is not in the guide for the non-tow driver. I guess that the fact that brake fluid is not even mentioned in the Scheduled Maintenance Guide shows that it does not show all of the fluid changes that should be made. So it is worth discussing. Has anybody changed this oil and found that the change was clearly overdue?

Note that Frankxyz was only asking if it would be OK to wait until this weekend to add oil.

2009 V6 4wd Base
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post #8 of 19 (permalink) Old 01-03-2012, 03:01 PM Thread Starter
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Thank you all. I did top it off. I couldnt figure out how to use gravity and a length of hose to add fluid in such close quarters.
I didnt think this would work, but I ended up using a spray bottle and it worked ok with the 80W.
Best regards.
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post #9 of 19 (permalink) Old 01-03-2012, 03:31 PM
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Quote:
Originally Posted by frankxyz View Post
Thank you all. I did top it off. I couldnt figure out how to use gravity and a length of hose to add fluid in such close quarters.
I didnt think this would work, but I ended up using a spray bottle and it worked ok with the 80W.
Best regards.
Gear oil has very high viscosity. The best thing to do before filling the oil is place the oil next to a heater and warm it up a bit so it can flow easier. Just keep an eyes on it so you don't start a fire.
Oil gun w/ clear tube works really well when filling the the transfercase.
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post #10 of 19 (permalink) Old 01-04-2012, 05:42 AM
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Quote:
Originally Posted by Carbon View Post
My 2009 Scheduled Maintenance Guide does not show a scheduled change for the transfer case. It shows to inspect every 15000 miles (as it does for the brake lines and several other things). I suspect the inspection at the dealer would only be looking for signs of leakage rather than checking the actual level or other aspect. It shows to change each (as I interpret) 15000 in which you did towing.

I am not saying changing at 60K is not a good idea-- especially if you are going to go top up anyway, but it is not in the guide for the non-tow driver. I guess that the fact that brake fluid is not even mentioned in the Scheduled Maintenance Guide shows that it does not show all of the fluid changes that should be made. So it is worth discussing. Has anybody changed this oil and found that the change was clearly overdue?

Note that Frankxyz was only asking if it would be OK to wait until this weekend to add oil.
I know I saw 60K somewhere. But, I can tell you that when I changed mine at 70K there was a lot of metal particles in the oil. So much so, it was nearly silver in color. With only about a pint or so, I can't imagine leaving it in there for much longer.

2007 Red Limited V6 4WD
w/ Tow package
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