TX DTR #8--August Meet
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From: Dallas area
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From: Texas/Oklahoma Border
I watch wind blow...
Joined: Dec 2006
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From: Red Dirt territory of TEXAS
good bye North Texas 
headed back to school as soon as I can get all my stuff in the truck.
atleast I got a "hot shot" back up to the school to pay for my return trip
headed back to school as soon as I can get all my stuff in the truck.atleast I got a "hot shot" back up to the school to pay for my return trip
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Joined: Jul 2002
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From: Celina, TX
So now that Robert and Brian have seen fit to put a curse my u-joints in Rob's driveshaft thread, let me ask a couple of questions.
So the other week before the GTG, I had the rear seal on the transfer case replaced because of a leak. I could see the drips on the driveway at home, and could see the oil drops hanging off the u-joint on the slip yoke. But there was no trail of oil on the exterior of the slip yoke where it goes into the transfer case. I had the new seal put in and figured all was good.
Well, I discovered the next morning after the GTG after parking on my driveway again that there were a few drips on the concrete again. Once again, same situation. I could see the oil drops on the u-joint of the slip yoke, but nothing on the shaft going into the TC. I could feel oil on the inner flat surface of the u-joint on the slip yoke and this is what was dripping down. Of course I've been on the road somewhere every day since, so I haven't had a chance to go back to the shop or get underneath and dig into it myself.
I've been checking every day or so after being parked, but I haven't seen any drops. The only place that I ever see evidence of a leak is when I park uphill on my driveway at the house. I've also been looking at the surrounding areas on the underside of the truck (tank, bed, etc) and don't see any excessive oil spray, so it doesn't appear I'm leaking while driving.
So is the slip yoke a solid piece, or is there a hole in the center of the flat part of the yoke where it goes onto the tube that connects to the TC output shaft? So far, the only way I can see that it's leaking is that when I'm parked in the driveway on the incline, the oil runs down the output shaft inside the slip yoke, then leaks out through some opening in the flat surface of the yoke. That would explain how the oil gets to the inside faces of the yoke without leaving a trail along the exterior of the slip yoke shaft. If that's the case, the next question is how is the oil getting out of the TC to begin with since the seal is brand new?
So the other week before the GTG, I had the rear seal on the transfer case replaced because of a leak. I could see the drips on the driveway at home, and could see the oil drops hanging off the u-joint on the slip yoke. But there was no trail of oil on the exterior of the slip yoke where it goes into the transfer case. I had the new seal put in and figured all was good.
Well, I discovered the next morning after the GTG after parking on my driveway again that there were a few drips on the concrete again. Once again, same situation. I could see the oil drops on the u-joint of the slip yoke, but nothing on the shaft going into the TC. I could feel oil on the inner flat surface of the u-joint on the slip yoke and this is what was dripping down. Of course I've been on the road somewhere every day since, so I haven't had a chance to go back to the shop or get underneath and dig into it myself.
I've been checking every day or so after being parked, but I haven't seen any drops. The only place that I ever see evidence of a leak is when I park uphill on my driveway at the house. I've also been looking at the surrounding areas on the underside of the truck (tank, bed, etc) and don't see any excessive oil spray, so it doesn't appear I'm leaking while driving.
So is the slip yoke a solid piece, or is there a hole in the center of the flat part of the yoke where it goes onto the tube that connects to the TC output shaft? So far, the only way I can see that it's leaking is that when I'm parked in the driveway on the incline, the oil runs down the output shaft inside the slip yoke, then leaks out through some opening in the flat surface of the yoke. That would explain how the oil gets to the inside faces of the yoke without leaving a trail along the exterior of the slip yoke shaft. If that's the case, the next question is how is the oil getting out of the TC to begin with since the seal is brand new?
Thread Starter
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Joined: Nov 2004
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From: McKinney, TX
Good luck Max! Maybe you can wrap it up and get into the working world $oon.
What are you towing to NM?
..
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From: Dallas area
So now that Robert and Brian have seen fit to put a curse my u-joints in Rob's driveshaft thread, let me ask a couple of questions.
So the other week before the GTG, I had the rear seal on the transfer case replaced because of a leak. I could see the drips on the driveway at home, and could see the oil drops hanging off the u-joint on the slip yoke. But there was no trail of oil on the exterior of the slip yoke where it goes into the transfer case. I had the new seal put in and figured all was good.
Well, I discovered the next morning after the GTG after parking on my driveway again that there were a few drips on the concrete again. Once again, same situation. I could see the oil drops on the u-joint of the slip yoke, but nothing on the shaft going into the TC. I could feel oil on the inner flat surface of the u-joint on the slip yoke and this is what was dripping down. Of course I've been on the road somewhere every day since, so I haven't had a chance to go back to the shop or get underneath and dig into it myself.
I've been checking every day or so after being parked, but I haven't seen any drops. The only place that I ever see evidence of a leak is when I park uphill on my driveway at the house. I've also been looking at the surrounding areas on the underside of the truck (tank, bed, etc) and don't see any excessive oil spray, so it doesn't appear I'm leaking while driving.
So is the slip yoke a solid piece, or is there a hole in the center of the flat part of the yoke where it goes onto the tube that connects to the TC output shaft? So far, the only way I can see that it's leaking is that when I'm parked in the driveway on the incline, the oil runs down the output shaft inside the slip yoke, then leaks out through some opening in the flat surface of the yoke. That would explain how the oil gets to the inside faces of the yoke without leaving a trail along the exterior of the slip yoke shaft. If that's the case, the next question is how is the oil getting out of the TC to begin with since the seal is brand new?
So the other week before the GTG, I had the rear seal on the transfer case replaced because of a leak. I could see the drips on the driveway at home, and could see the oil drops hanging off the u-joint on the slip yoke. But there was no trail of oil on the exterior of the slip yoke where it goes into the transfer case. I had the new seal put in and figured all was good.
Well, I discovered the next morning after the GTG after parking on my driveway again that there were a few drips on the concrete again. Once again, same situation. I could see the oil drops on the u-joint of the slip yoke, but nothing on the shaft going into the TC. I could feel oil on the inner flat surface of the u-joint on the slip yoke and this is what was dripping down. Of course I've been on the road somewhere every day since, so I haven't had a chance to go back to the shop or get underneath and dig into it myself.
I've been checking every day or so after being parked, but I haven't seen any drops. The only place that I ever see evidence of a leak is when I park uphill on my driveway at the house. I've also been looking at the surrounding areas on the underside of the truck (tank, bed, etc) and don't see any excessive oil spray, so it doesn't appear I'm leaking while driving.
So is the slip yoke a solid piece, or is there a hole in the center of the flat part of the yoke where it goes onto the tube that connects to the TC output shaft? So far, the only way I can see that it's leaking is that when I'm parked in the driveway on the incline, the oil runs down the output shaft inside the slip yoke, then leaks out through some opening in the flat surface of the yoke. That would explain how the oil gets to the inside faces of the yoke without leaving a trail along the exterior of the slip yoke shaft. If that's the case, the next question is how is the oil getting out of the TC to begin with since the seal is brand new?
Ahh... Jason was having this issue as well and it took some research to figure it out! Never heard of it before, but there is a cap on the end of the yoke (u joint side) This cap can leak around the edges over time... General consensus is to pull the shaft, pull the u-joint out and clean the cap off really well, then good ol RTV... Some also say to pack some RTV inside of the yoke down on the cap... If this doesn't work then it is time for new yoke... At least that is the info I found... Jason did it last week and his has been fine since.
Basically same scenario for him, drips under truck, mess on the underside... Replaced the seal.. Still happened, seal stays dry but the ujoint is dripping...
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From: Dallas area
More info that I found out is that cap used to have a small hole in it for venting when the yoke would slide forward fast to not trap a pocket of air... Now we are missing a spline in the yoke to let the air pass.. interesting I thought
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From: Celina, TX
Interesting. Makes sense why there would be a vent if everything was fully splined.
But the remaining question is, how is the oil getting in there in the first place? I guess I need to pull the yoke, clean it all up real well along with the backside of the TC, then re-assemble. Maybe it's just leaking fluid that was trapped in the yoke shaft and only drains when I'm on the incline. But now if I end up with more fluid after it's all clean, I still have a leak to find.
Ahhh...projects.
But the remaining question is, how is the oil getting in there in the first place? I guess I need to pull the yoke, clean it all up real well along with the backside of the TC, then re-assemble. Maybe it's just leaking fluid that was trapped in the yoke shaft and only drains when I'm on the incline. But now if I end up with more fluid after it's all clean, I still have a leak to find.
Ahhh...projects.
I watch wind blow...
Joined: Dec 2006
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From: Red Dirt territory of TEXAS
Thanx, yes the $$ should be good.
I hauled up a tow behind "Robo Bronc" for the rodeo team, It's a bucking machine that is drug behind a 4 wheeler, that uses a mechanical wheel drive, so the faster you go the harder it bucks. it fit in the bed so no trailer, But it did pay my way
Now I just need to find stuff to haul back to Fort Worth every other month or so.
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From: Celina, TX
OK, that makes sense. The splines would need some lubrication to make sure it doesn't bind up. I guess I'll keep backing up the driveway till I get around to pulling the shaft.
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From: Texas/Oklahoma Border
Had cause to send Video of you & I pulling at Alvarado (customer wanted to see trucks pulling sleds). After watching them again... I got the itch!
Said I was going to quit before I broke something but.....
RJ
I watch wind blow...
Joined: Dec 2006
Posts: 1,390
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From: Red Dirt territory of TEXAS
While I was pulling my tranny out it tilted back and dumped about a quart out of the tail shaft onto the pavement. . was toting tranny to shop, fell over in bed of truck and dumped another quart or so of very messy and smelly gear lube. If I would have had a spare yoke I would have stabbed it in there to prevent leakage.
Max
Max
