73-87chevytrucks.com

73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: GregL on February 09, 2016, 02:34:26 pm

Title: '77 K20 speedo adapter
Post by: GregL on February 09, 2016, 02:34:26 pm

Hi Guys,
                   My speedo cable adapter at my T-case is leaking pretty badly. Does anyone offer a rebuild kit for these? I think it would just be the O ring and small gasket. Or does anyone know of a good source for a new one?
Thanks, Greg

Title: Re: '77 K20 speedo adapter
Post by: hatzie on February 12, 2016, 04:43:45 pm

Quote from: GregL on February 09, 2016, 02:34:26 pm

Hi Guys,
                   My speedo cable adapter at my T-case is leaking pretty badly. Does anyone offer a rebuild kit for these? I think it would just be the O ring and small gasket. Or does anyone know of a good source for a new one?
Thanks, Greg

It's not the little gearbox.  Those aren't super sealed.  The o-ring in the driven gear adapter in the tailshaft housing is leaking.  Probably the transfer case vent is a little gummed up too.

My Droid from orbit

Title: Re: '77 K20 speedo adapter
Post by: GregL on February 13, 2016, 04:38:59 am

I'll check the vent. Thanks.

Title: Re: '77 K20 speedo adapter
Post by: GregL on February 14, 2016, 06:06:33 pm

You were right hatzie,  8) thanks. The inner o-ring was bad. Replaced today and cleaned the breather while I was at it.