Slip yoke leak

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Drswiger

Junior Member
Joined
May 30, 2021
Posts
28
Reaction score
5
Location
US
First Name
Johnny
Truck Year
1987
Truck Model
R10
Engine Size
350
Center of the slip yoke leaking
Is there a problem using RTV in the center ? Or a better way?

You must be registered for see images attach


You must be registered for see images attach


You must be registered for see images attach
 

Mofarmer

Full Access Member
Joined
Feb 21, 2021
Posts
55
Reaction score
165
Location
Missouri
First Name
Mark
Truck Year
1986
Truck Model
C10
Engine Size
305
Anxious to hear some responses my 86 c10 is doing the same thing!
 

yevgenievich

Full Access Member
Joined
Mar 1, 2014
Posts
4,819
Reaction score
3,400
Location
Place
First Name
Name
Truck Year
Year
Truck Model
Model
Engine Size
Size
There Is a seal inside tail housing on output shaft. Or replace with a yoke that is missing one spline and non vented to outside
 

PrairieDrifter

Full Access Member
Joined
Dec 28, 2014
Posts
3,854
Reaction score
5,646
Location
North Dakota
First Name
Mason
Truck Year
84,79,77,76,70,48
Truck Model
Suburban k10, bonanza k10, k30, k20, c10, gmc 1/2ton
Engine Size
350, 350, 350, 350, 350, 350
You can rtv it, won't last long I'm sure. I just sucked it up and bought a new yoke.
 

PrairieDrifter

Full Access Member
Joined
Dec 28, 2014
Posts
3,854
Reaction score
5,646
Location
North Dakota
First Name
Mason
Truck Year
84,79,77,76,70,48
Truck Model
Suburban k10, bonanza k10, k30, k20, c10, gmc 1/2ton
Engine Size
350, 350, 350, 350, 350, 350
Also have you ever done u-joints?
 

Drswiger

Junior Member
Joined
May 30, 2021
Posts
28
Reaction score
5
Location
US
First Name
Johnny
Truck Year
1987
Truck Model
R10
Engine Size
350
Sounds like the RTV is temporary. I think I am going to try some JB weld and see how long it lasts. If it doesn’t work I will look for a yoke that doesn’t have the vent if I can. I have a press so I can replace the unjointed while I’m there. Just a PITA
 

Drswiger

Junior Member
Joined
May 30, 2021
Posts
28
Reaction score
5
Location
US
First Name
Johnny
Truck Year
1987
Truck Model
R10
Engine Size
350
by the way, does anyone have a part number for a non vented yoke for 87 R10?
 

C10MixMaster

Full Access Member
Joined
Dec 6, 2016
Posts
756
Reaction score
1,424
Location
Kingman AZ
First Name
Ben
Truck Year
1977
Truck Model
C10 BIG10
Engine Size
ZZ4 350
You must be registered for see images attach


there's an oring inside the end of the tube that's where the leak is. Easy fix , probably easer that trying to JB weld it.
 

Drswiger

Junior Member
Joined
May 30, 2021
Posts
28
Reaction score
5
Location
US
First Name
Johnny
Truck Year
1987
Truck Model
R10
Engine Size
350
Where exactly? What tube?
 

Dave M

Banned
Joined
Jul 30, 2019
Posts
602
Reaction score
1,308
Location
Australia
First Name
Dave
Truck Year
1976
Truck Model
C10
Engine Size
454
^ It would definetley be bad ! Here is an example of BAD

xc_hide_links_from_guests_guests_error_hide_media
 

Joshua Keith

Full Access Member
Joined
Aug 28, 2019
Posts
380
Reaction score
552
Location
Memphis
First Name
Joshua
Truck Year
1985
Truck Model
K10
Engine Size
350
Don't JB Weld it dude...
:nono:

That would be bad.
:disgust:

Definitely not good?
:thumbsdown:

Uh oh lol What would be the difference in jb welding the weep hole vs getting a shaft without one?
 

Rusty Nail

Full Access Member
Joined
Jan 29, 2015
Posts
10,041
Reaction score
10,134
Location
the other side of the internet
First Name
Rusty
Truck Year
1977
Truck Model
C20
Engine Size
350sbc
If you plug the weep hole, that doesn't fix the leak.. It will continue to leak internally, no? Then what happens?

Reckon it was there for a reason.
You don't wonder why?
 
  • Like
Reactions: WFO

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,439
Reaction score
5,581
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
If you JB weld it, you are effectively sealing the space there. Which means that every time the shaft tries to slide out it will create a vacuum and every time the shaft tries to slide in, it will generate pressure inside that cavity. The BEST outcome of that is that it blows the JB weld right out the end and you get your leak coming back. The worst case is that the shaft doesn't want to slide and it pushes in on the output shaft of the trans and in on the pinion of the rear diff. That's going to be extra thrust load and premature wear on U-joints and thrust washers in both the transmission and rear end. Its just as much work(or actually probably less) to just pull the rear driveline, take the 4 bolts off for the rear trans housing, replace the output seal on the rear housing(because you are already there) and pop a new o-ring in the output shaft. It's probably a 1 hour job... tops. Then you will be right back to new, non-leaking, operation for about $20 and 1 hour of your time.
 
  • Like
Reactions: WFO

Latest posts

Forum statistics

Threads
44,173
Posts
950,863
Members
36,288
Latest member
brentjo
Top