front diff drain pic.

[ericguy320]

I was board at work, and i thought since i had my diff out i would cut a notch in one of the bolt holes for a drain, I put a oil drain plug o ring on it and some thread sealer.

 

[Tydriver]

X

 

[ericguy320]

X

duuuh how bout now?

 

[Lynn D. Brown]

Front Diff. Drain

Front Diff. Drain

Eric,

I've got my Frt Diff. out also, and apparently one of the guys on the list has successfully drilled a hole in his Front Diff and installed a plug. The Pass ½ of my Front Diff case is damaged, so I tried to drill a Drain plug hole as an experiment, but I was unsuccessful in getting it to seal tight. But I will be replacing it anyway, so no loss.

From the picture, U R removing part of the flat sealing surface above the bolt hole, on the short, non-threaded, Pass side case, right ? So then oil can then drain out the hole when U remove the bolt ? Not sure why U would need a drain Plug - just use the bolt. Sounds a little risky as the case may not seal totally again. So, does it seal ?

Up until your experiment I had pretty much resigned myself to sucking it out w some kind of a device. Please let us know whether it leaks or not.

 

[Tydriver]

Thanks .. Interesting mod... I like.. how do you get correct FILL level ? I havent looked at my front DIFF in a while.. Is there a spot for it to fill ?

 

[ericguy320]

From the picture, U R removing part of the flat sealing surface above the bolt hole, on the short, non-threaded, Pass side case, right ? So then oil can then drain out the hole when U remove the bolt ? Not sure why U would need a drain Plug - just use the bolt. Sounds a little risky as the case may not seal totally again.

yeah i used the non threaded side, i also use the gm red gasket maker, i have sealed transmissions and other front diffs with almost the same size sealing surface and have never had a leak. its not like there is any preasure in the diff, and the fluid is kinda thick ( also using gm syn fluid got plenty layin around, this stuff is $29 a qt ) but only time will tell

 

[jwaller]

there is a spot to fill from on the stock unit. you do the same thing for it as you do on the xcase. fill until it runs out then stop.... :fist:

 

[ericguy320]

Thanks .. Interesting mod... I like.. how do you get correct FILL level ? I havent looked at my front DIFF in a while.. Is there a spot for it to fill ?

yeep the big plug next to the axle hole, fill until it comes out.

 

[Lynn D. Brown]

Front diff. Fluid

Front diff. Fluid

Eric,

U paid $29./Qt for Syn. fluid ? The normal Mobil etc. in the store is only $5-8./Qt.

 

[ericguy320]

Re: Front diff. Fluid

Re: Front diff. Fluid

Eric,

U paid $29./Qt for Syn. fluid ? The normal Mobil etc. in the store is only $5-8./Qt.

no i work at a chevy dealer so i have extra free stuff around