air pressure from rear differential

Tundra_DC · #1 (**permalink**) 08-08-2005, 08:34 AM

I have a 2005 tundra with less than 1k miles. I crawled under yesterday to check the fluid level in the rear diff (just want to make sure full from factory and I did notice some noise around 50mph). The Differential fill/check bolt was very tight, as I losened it, I felt and heard air pressure coming out from plug. I have never seen or heard this before. Anyone ever noticed this? I think there is a relief valve somewhere that should keep air pressure out of the rear difff? Could the valve be stuck? Any suggestions, should I have this checked out by the toyota folks?

Thanks in advance

TMS2U · #2 (**permalink**) 08-08-2005, 09:53 AM

The diff should not be pressurized- sounds like a pluged vent. Have the dealer check it or you could try to clear it yourself- its on the drivers side of the pumkin. Either way take care of it soon so you dont blow an axle seal

Tundra_DC · #3 (**permalink**) 08-08-2005, 10:40 AM

Quote:

Originally Posted by TMS2U

The diff should not be pressurized- sounds like a pluged vent. Have the dealer check it or you could try to clear it yourself- its on the drivers side of the pumkin. Either way take care of it soon so you dont blow an axle seal

thanks. I will try to clear myself, if not will take it in.

Mike Donofrio · #4 (**permalink**) 08-08-2005, 04:05 PM

While you're at it, consider extended the breather with a longer hose up into a fenderwell or something. Lots of guys have done this (me included) I think there is a write up out here somewhere.

Also, when you put the diff filler/drain plugs back in, coat the threads with anti-seize--it'll make removal the next time MUCH easier.

Tundra_DC · #5 (**permalink**) 08-08-2005, 05:01 PM

Quote:

Originally Posted by Mike Donofrio

While you're at it, consider extended the breather with a longer hose up into a fenderwell or something. Lots of guys have done this (me included) I think there is a write up out here somewhere.

Do I need to do this even though I don't go 4-wheeling?

Also, when you put the diff filler/drain plugs back in, coat the threads with anti-seize--it'll make removal the next time MUCH easier.

thanks, thats a great idea since it was a pain to get off or the old age arthritis is worst than I thought.

I am taking into the shop tomorrow, I crawled up undeneath it at lunch and check the valve and it looked ok to me. Better safe than sorry. thanks for everyones help

Mike Donofrio · #6 (**permalink**) 08-08-2005, 05:06 PM

You don't HAVE to do it, but do they use salt on NC roads in the winters? If so, then it's just a matter of time before the aluminum cap gets crudded up again.

Tundra_DC · #7 (**permalink**) 08-08-2005, 06:29 PM

Quote:

Originally Posted by Mike Donofrio

You don't HAVE to do it, but do they use salt on NC roads in the winters? If so, then it's just a matter of time before the aluminum cap gets crudded up again.

yeap, they use salt here. I have a some time before winter sets in to do this modification. thanks.

Tundra_DC · #8 (**permalink**) 08-10-2005, 11:27 AM

Took to stealer yesterday and they said the value was plugged and they blew out with air hose. I was hoping they would replace value but they didn't. I will just keep a watch on it. Just seems they where cheap on this repair, I mean how much can that small value costs.