Found the leak source in my 205 transfer case, question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1966 · 04-03-2014, 08:19 PM

found my leak, is that the speedo cable?

Avitech · 04-03-2014, 08:50 PM

yes it is.

**kwmech** · 04-03-2014, 08:51 PM

Yup, unscrew the cable, push to the side, get a socket that fits the larger nut 1-1/16'' (i think) unscrew that and remove the nut and driven gear. Go to local transmission shop and tell them you need a seal that fits inside there. I think there is room for you to double them up

1966 · 04-03-2014, 08:53 PM

thanks guys. i've done some reading that gear oil is ideal, but obviously PO had tranny fluid in there. keep it the same?

**kwmech** · 04-03-2014, 09:02 PM

If the 205 is bolted to an automatic transmission, then you may have a problem. Pull the filler plug and see how much fluid comes out. If it is overfull, you will have to pull the case out of the truck and replace the seals in the adapter housing. Transfer case should take 80/90 wt gear oil

1966 · 04-03-2014, 09:03 PM

Quote:

Originally Posted by kwmech

If the 205 is bolted to an automatic transmission, then you may have a problem. Pull the filler plug and see how much fluid comes out. If it is overfull, you will have to pull the case out of the truck and replace the seals in the adapter housing. Transfer case should take 80/90 wt gear oil

yup it's an automatic

**kwmech** · 04-03-2014, 09:15 PM

Have fun, the transfer case weighs 156 lbs

04-03-2014, 08:19 PM	#1
1966 Registered User Join Date: May 2013 Location: California Posts: 65	Found the leak source in my 205 transfer case, question found my leak, is that the speedo cable?

04-03-2014, 08:50 PM	#2
Avitech Registered User Join Date: Mar 2013 Location: Troy, NH Posts: 44	Re: Found the leak source in my 205 transfer case, question yes it is. __________________ 1990 Suburban Silverado 350, SM465 and 35" tires

04-03-2014, 08:51 PM	#3
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,593	Re: Found the leak source in my 205 transfer case, question Yup, unscrew the cable, push to the side, get a socket that fits the larger nut 1-1/16'' (i think) unscrew that and remove the nut and driven gear. Go to local transmission shop and tell them you need a seal that fits inside there. I think there is room for you to double them up

04-03-2014, 08:53 PM	#4
1966 Registered User Join Date: May 2013 Location: California Posts: 65	Re: Found the leak source in my 205 transfer case, question thanks guys. i've done some reading that gear oil is ideal, but obviously PO had tranny fluid in there. keep it the same?

04-03-2014, 09:02 PM	#5
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,593	Re: Found the leak source in my 205 transfer case, question If the 205 is bolted to an automatic transmission, then you may have a problem. Pull the filler plug and see how much fluid comes out. If it is overfull, you will have to pull the case out of the truck and replace the seals in the adapter housing. Transfer case should take 80/90 wt gear oil

04-03-2014, 09:15 PM	#7
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,593	Re: Found the leak source in my 205 transfer case, question Have fun, the transfer case weighs 156 lbs

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