The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Can a transmission leak through the yoke and U-joints?

davepl · 10-16-2014, 11:07 PM

I have what appears to be a "two drip a day" transmission leak. It is coming out of the U-joint at the back of the trans.

The trans and the trans seal are dry. I thought perhaps it was just grease I packed into it during assembly coming out (red grease, red trans fluid, hard to say). But it's been doing it for a couple of weeks now and I don't think there's enough supply in a U-joint cap to account for it.

I switched over to the big (1330 or 1350?) yoke, as it is a 200-4R and wanted to retain my driveshaft.

If not through the yoke, is there anywhere else I can check?

10-16-2014, 11:07 PM	#1
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,334	Can a transmission leak through the yoke and U-joints? I have what appears to be a "two drip a day" transmission leak. It is coming out of the U-joint at the back of the trans. The trans and the trans seal are dry. I thought perhaps it was just grease I packed into it during assembly coming out (red grease, red trans fluid, hard to say). But it's been doing it for a couple of weeks now and I don't think there's enough supply in a U-joint cap to account for it. I switched over to the big (1330 or 1350?) yoke, as it is a 200-4R and wanted to retain my driveshaft. If not through the yoke, is there anywhere else I can check? __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible