Transmission Oil overflow after installing ARB lockers

[FelipeA]

We have installed ARB lockers on three FZJ73s (RD43 rear, RD23 front -- Colombian LCs use Dana transmissions). Under heavy use (+60MPH HW or strong offroading), transmission fluid, both front and rear, overflows yet we have been careful to fill to the appropriate pre-locker lubricant levels. Oil level never goes below 1.5 quarts.....

Should I be worried? Should I just use 1.5 quarts per tranny and forget about it? Is this too low? Is there a known fix to this issue? BTW, I don't have an authorized ARB dealer nearby so I need to cope alone.

Thanks for all your comments!

Felipe A

 

[Tapage]

Que tal pana ..

In US and most places of world your " tranny " or transmision are called Axles .. tranny or tranmision ( wrong name, but is fine four your local use and Venezuela as well ) are for us your gear box.

Ok .. your question.

There is something interesting about it .. my clues are about your breathers in both axles .. check if are free and the in valves are function fine ..

Other is, did you are check you backlash ..? I thought and is other idea, that if you axles ( means your 3rd member aka R&P ) are tight and making much more heat than normal ..

this issue maybe expand your oil ..

 

[roscoFJ73]

Que tal pana ..

In US and most places of world your " tranny " or transmision are called Axles .. tranny or tranmision ( wrong name, but is fine four your local use and Venezuela as well ) are for us your gear box.


..

So what do you call a gearbox in Venezuala?

Sure had me confused with the tranny pumping out oil

 

[Tapage]

So what do you call a gearbox in Venezuala?

Sure had me confused with the tranny pumping out oil

Something like " box " caja ( in spanish )

In Venezuela when you ear " sincronico " means manual tranny .. another few funny things are

clucth = croche

bearing = rolinera

drive shaft = cardán

Here in Panamá we have also ..

3rd member = piña ! jajajajaaja it's so funny ( make me lol )

drive shaft = eje de mando

bearing = balinera

Here in Panamá is much less than other Latin countries coz we have much USA influence .. so the people usually know or recognice the english name.

 

[roscoFJ73]

Back to Felipe's problem

I saw this on a 4runner site

"Refilling the housing by simply adding oil up to the fill hole will cause the differential to blow oil out of the breather! This is a common problem and is amplified by the installation of the larger ARB differential. Fill the oil level to between 1/2" and 1" below the fill hole when you have completed installation"

http://www.4x4wire.com/toyota/4Runner/tech/ifs_airlocker/

 

[aussie75series]

where does the oil overflow from,diff breather or locker air line.If it is the air line you have installed the "O" ring poorly or scratched the diif where the "O" sits.

 

[FelipeA]

Thanks for all replies with mechanical and translation feedback.

RoscoFJ73 thanks for pointing me to the 4runner post -- it sounds intuitive.

the oil overflows through the diff breather that I have raised to prevent mud and water from filtering in.

Thanks again and any other thoughts are welcome.

 

[roscoFJ73]

Thanks for all replies with mechanical and translation feedback.

RoscoFJ73 thanks for pointing me to the 4runner post -- it sounds intuitive.

the oil overflows through the diff breather that I have raised to prevent mud and water from filtering in.

Thanks again and any other thoughts are welcome.

Glad to be of service

 

[stanley]

Back to Felipe's problem

I saw this on a 4runner site

"Refilling the housing by simply adding oil up to the fill hole will cause the differential to blow oil out of the breather! This is a common problem and is amplified by the installation of the larger ARB differential. Fill the oil level to between 1/2" and 1" below the fill hole when you have completed installation"

http://www.4x4wire.com/toyota/4Runner/tech/ifs_airlocker/

this sounds very reasonable. More moving mass inside the pumpkin should displace the oil to the path of least resistance. the path of least resistance is the breather tubes.

 

[Tapage]

I got this issue one oportuniti when disengage the rear locker the ARB compresor solenoid spit out diff oil ..