 jham0077
"2nd Year" Silver Supporting Member
Posts: 320
Age: 36
Loc: Greenville, Il.
Reg: 11-04-11
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 08-06-12 09:09 AM - Post#2256361
Pretty sure my drive shaft is leaking on the tube that slips in the transfer case. There's fluid on it and the floorboard. The seal is good. Call a couple of salvage yards but they don't want to split driveshafts. Can I clean it up and fill it with silicone?
Keep throwing money at it, it'll get better...
95 Tahoe 5.7 w/5 spd
Gone but not forgotten,
87 LWB 4x4 5.0 w/3 spd granny,
84 SWB 4x4 5.7 w/3 spd granny,
93 Full Size Blazer 5.7 w/5 spd,
97 Step-side Vortec w/5 spd.
I like shifting gears. |
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 davidchristopher
"4th Year" Gold Supporting Member
Posts: 1660
Age: 42
Loc: Saint George, Ontario, Ca...
Reg: 08-02-09
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08-06-12 10:06 AM - Post#2256384
In response to jham0077
I wasn't aware driveshafts contained fluid...
1951 Chevrolet Styleline Special. (350 4 Muncie '55 Driveshaft CE crossmember Heidts Mustang II front suspension, 3:10 Posi)
The '51 Chevy Blog
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jham0077
"2nd Year" Silver Supporting Member
Posts: 320
Age: 36
Loc: Greenville, Il.
Reg: 11-04-11
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08-06-12 10:15 AM - Post#2256387
In response to davidchristopher
They don't. It slides into the transfer case. I think the fluid is following the splines of the transfer case shaft and leaking out the front yoke of the drive shaft. At least that's what it looks like to me. That would be a good joke though... kinda like blinker fluid.
Keep throwing money at it, it'll get better...
95 Tahoe 5.7 w/5 spd
Gone but not forgotten,
87 LWB 4x4 5.0 w/3 spd granny,
84 SWB 4x4 5.7 w/3 spd granny,
93 Full Size Blazer 5.7 w/5 spd,
97 Step-side Vortec w/5 spd.
I like shifting gears. |
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Allan In NE
Contributor
Posts: 898
Reg: 12-27-11
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08-06-12 11:31 AM - Post#2256408
In response to jham0077
Just replace the spline seal. It'll cost ya 'bout two bits.
Allan
| Lifelong GM automatic transmission specialist |
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jham0077
"2nd Year" Silver Supporting Member
Posts: 320
Age: 36
Loc: Greenville, Il.
Reg: 11-04-11
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08-06-12 01:58 PM - Post#2256444
In response to Allan In NE
Spline seal? Not the knock in one in the case that slides on the outside of the yoke right?
Keep throwing money at it, it'll get better...
95 Tahoe 5.7 w/5 spd
Gone but not forgotten,
87 LWB 4x4 5.0 w/3 spd granny,
84 SWB 4x4 5.7 w/3 spd granny,
93 Full Size Blazer 5.7 w/5 spd,
97 Step-side Vortec w/5 spd.
I like shifting gears. |
|
Allan In NE
Contributor
Posts: 898
Reg: 12-27-11
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08-06-12 03:31 PM - Post#2256472
In response to jham0077
No,
The slip shaft has to move in and out of the case because of spring wrap travel and it has to be 'vented' (small round hole in the yoke) to allow air in and out.
However, it also needs to be sealed past the splines to keep the oil in the case.
So, a rubber star-shaped washer is used in the slip shaft to hold that oil 'forward'.
Here's a picture of a generic seal. The application depends the configuration of the driveshaft setup.
Allan
| Lifelong GM automatic transmission specialist |
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motorman
Super Senior Member
Posts: 5017
Loc: south western pa.
Reg: 01-25-00
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08-06-12 03:36 PM - Post#2256475
In response to Allan In NE
some yokes have a expansion plug it the back that could leak
| retired race engine builder,former NASCAR tech inspector. new corvettes owned 1959,1962,1963,1964,1965, 1966,1997,1999,2002,2005, 2008 plus 30+ other chevy cars and trucks along the way |
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454cid
Contributor
Posts: 296
Age: 40
Reg: 02-18-12
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08-06-12 10:06 PM - Post#2256642
In response to Allan In NE
The slip shaft.......has to be 'vented' (small round hole in the yoke) to allow air in and out.
No. Vented yokes need to be vented. Non-vented yokes need to be sealed.
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jham0077
"2nd Year" Silver Supporting Member
Posts: 320
Age: 36
Loc: Greenville, Il.
Reg: 11-04-11
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08-07-12 06:57 AM - Post#2256707
In response to 454cid
Didn't notice the obvious, plugs, man-made vent holes, anything like that. Guess I need to pull the driveshaft and take a look in the slip end and see whats going on. If it's suppose to be sealed, will a cleaning and a shot of silicone do the trick? I guess I should be concerned why it started leaking. The last thing I need is a driveshaft coming apart at 60 mph. What a mess....
Keep throwing money at it, it'll get better...
95 Tahoe 5.7 w/5 spd
Gone but not forgotten,
87 LWB 4x4 5.0 w/3 spd granny,
84 SWB 4x4 5.7 w/3 spd granny,
93 Full Size Blazer 5.7 w/5 spd,
97 Step-side Vortec w/5 spd.
I like shifting gears. |
|
454cid
Contributor
Posts: 296
Age: 40
Reg: 02-18-12
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08-07-12 02:27 PM - Post#2256846
In response to jham0077
Didn't notice the obvious, plugs, man-made vent holes, anything like that. Guess I need to pull the driveshaft and take a look in the slip end and see whats going on. If it's suppose to be sealed, will a cleaning and a shot of silicone do the trick?
A non-vented slip yoke would have to be extremely rusty before it vented itself, I would think. Both vented and non-vented have the same type of cap in the end. One just has a small hole punched in it.
The problem is most likely a seal in the transmission, like has been mentioned above.
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jham0077
"2nd Year" Silver Supporting Member
Posts: 320
Age: 36
Loc: Greenville, Il.
Reg: 11-04-11
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08-09-12 09:24 AM - Post#2257500
In response to 454cid
Thanks. If I ever get some spare time I'll look into it further. It's not pouring fluid... yet.
Keep throwing money at it, it'll get better...
95 Tahoe 5.7 w/5 spd
Gone but not forgotten,
87 LWB 4x4 5.0 w/3 spd granny,
84 SWB 4x4 5.7 w/3 spd granny,
93 Full Size Blazer 5.7 w/5 spd,
97 Step-side Vortec w/5 spd.
I like shifting gears. |
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