cloneman315
Active member
Re: Transfer case may be busted
so some sy and tys shared the same case?Im lost
so some sy and tys shared the same case?Im lost
George Blake
DONATING MEMBER
Re: Transfer case may be busted
Sys came with a shorter 27 spline case. Same case found in AWD astros and safaris.
Ty had the longer 32 spline cases. Same case found in Bravadas.
Sys came with a shorter 27 spline case. Same case found in AWD astros and safaris.
Ty had the longer 32 spline cases. Same case found in Bravadas.
cloneman315
Active member
Re: Transfer case may be busted
ok so bravada for a ty
ok so bravada for a ty
George Blake
DONATING MEMBER
George Blake
DONATING MEMBER
Re: Transfer case may be busted
Yes they are different. The 32 spline setup has a much longer tailhousing to go with the 32 spline shaft that's longer. 27 spline setup shorter tailhousing to go with the shorter 27 spline shaft.
Tailhousing unbolts from the case itself.
I just made that up.....
Yes they are different. The 32 spline setup has a much longer tailhousing to go with the 32 spline shaft that's longer. 27 spline setup shorter tailhousing to go with the shorter 27 spline shaft.
Tailhousing unbolts from the case itself.
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George Blake
DONATING MEMBER
Re: Transfer case may be busted
Only way is to compare it to a new chain.
That "sag" you see right now will get pulled out when the cover goes back on because the cover will pull the input shaft toware the "left" as the pic is and it will pull the front pinion shaft toward the "right". The chain manufacturers give you the 50K rule and the viscous manufacturers give the 60K rule. Just a note, it may just be the angle, but it doesn't look like your viscous is seated all the way. You've probably got a thrust washer not set right. Best way is to do it with the input shaft pointed straight up so everything stays lined up. With it laying on it's side like that, the thrust washers on both sides of the planetary just fell straight down and aren't letting the input shaft and viscous set in there right. Go to my www.primegears.net/gallery on the BW4472 build and look at those detailed closeups of the viscous and how deep it sits into the ring gear when its in there correctly.
Here you go. Here's the pic:
See how deep that sits in there? Like I said, it may just be the angle of your picture.
With it sitting like this:
You'll see it's much easier to line everything up.
One of those billet planetaries and sun gear shafts I'm doing would look really good in there....I'm just kidding. I had to say it though.
Only way is to compare it to a new chain.
That "sag" you see right now will get pulled out when the cover goes back on because the cover will pull the input shaft toware the "left" as the pic is and it will pull the front pinion shaft toward the "right". The chain manufacturers give you the 50K rule and the viscous manufacturers give the 60K rule. Just a note, it may just be the angle, but it doesn't look like your viscous is seated all the way. You've probably got a thrust washer not set right. Best way is to do it with the input shaft pointed straight up so everything stays lined up. With it laying on it's side like that, the thrust washers on both sides of the planetary just fell straight down and aren't letting the input shaft and viscous set in there right. Go to my www.primegears.net/gallery on the BW4472 build and look at those detailed closeups of the viscous and how deep it sits into the ring gear when its in there correctly.
Here you go. Here's the pic:
See how deep that sits in there? Like I said, it may just be the angle of your picture.
With it sitting like this:
You'll see it's much easier to line everything up.
One of those billet planetaries and sun gear shafts I'm doing would look really good in there....I'm just kidding. I had to say it though.
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mrweelr
New member
Re: Transfer case may be busted
Thanks, I will set the t-case vertical when I put it back together and make sure everything's seated properly. My truck has just under 79k on it, but I've always used Mobil 1 Dex III in it and have no reason to believe I should mess with it right now. If and when I break this t-case, I'll go ahead and upgrade it then. Out of curiosity, would it be possible to damage the transmission if the t-case ever locked up or the chain snapped?
Thanks, I will set the t-case vertical when I put it back together and make sure everything's seated properly. My truck has just under 79k on it, but I've always used Mobil 1 Dex III in it and have no reason to believe I should mess with it right now. If and when I break this t-case, I'll go ahead and upgrade it then. Out of curiosity, would it be possible to damage the transmission if the t-case ever locked up or the chain snapped?
George Blake
DONATING MEMBER
Re: Transfer case may be busted
Jeremy busted his all to pieces and I don't think it did anything to the trans.
Jeremy busted his all to pieces and I don't think it did anything to the trans.
George Blake
DONATING MEMBER
Re: Transfer case may be busted
Forgot. You don't check the bearings by wiggling them. You spin them. You should hear a nice "shhhhhhhhhhhhh" and it should slow to a stop. Not just stop like someone put the brake on. If it screeches or vibrates at all, the bearing is bad. For example, hold the inner race in your hand and spin the outer race. You should feel no vibration. If you feel vibration, the race is shot or one or more of the bearings is bad.
Forgot. You don't check the bearings by wiggling them. You spin them. You should hear a nice "shhhhhhhhhhhhh" and it should slow to a stop. Not just stop like someone put the brake on. If it screeches or vibrates at all, the bearing is bad. For example, hold the inner race in your hand and spin the outer race. You should feel no vibration. If you feel vibration, the race is shot or one or more of the bearings is bad.
B
BoostedGMC
Guest
Re: Transfer case may be busted
Is there any way I can test the case without tearing it apart? Maybe remove the driveshaft and propshaft and test it while still on the truck.
Is there any way I can test the case without tearing it apart? Maybe remove the driveshaft and propshaft and test it while still on the truck.
B
BoostedGMC
Guest
Re: Transfer case may be busted
Anyone know?
Anyone know?
B
BoostedGMC
Guest
Re: Transfer case may be busted
I just got a chance to change the fluid in the transfer case. I was happy to see that there was atf in there, but that atf was very filthy. I'll upload some pics later tonight.
I just got a chance to change the fluid in the transfer case. I was happy to see that there was atf in there, but that atf was very filthy. I'll upload some pics later tonight.
B
BoostedGMC
Guest
Re: Transfer case may be busted
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George Blake
DONATING MEMBER
Re: Transfer case may be busted
Check the planetary and the output shaft. There should be a scoop on the output shaft that feeds an orifice in the center. It will probably be gunked up from planetary debris. Use carb cleaner and compressed air to clean the needle bearings in the output shaft and make sure the lube orifice is clear. There are two lube holes in the INPUT shaft that feed lube to the planetary. Check the ring gear that the planetary rides in. It will have 1/8" of crud in it. Yep. Planetary material. There are NO needle bearings in the pinions and they just start grinding away when the viscosity of the trans fluid breaks down. Grab the pinions and try to wiggle them from center out.
Check the planetary and the output shaft. There should be a scoop on the output shaft that feeds an orifice in the center. It will probably be gunked up from planetary debris. Use carb cleaner and compressed air to clean the needle bearings in the output shaft and make sure the lube orifice is clear. There are two lube holes in the INPUT shaft that feed lube to the planetary. Check the ring gear that the planetary rides in. It will have 1/8" of crud in it. Yep. Planetary material. There are NO needle bearings in the pinions and they just start grinding away when the viscosity of the trans fluid breaks down. Grab the pinions and try to wiggle them from center out.
B
BoostedGMC
Guest
Re: Transfer case may be busted
I finally tore my case apart and bought a rebuild kit and chain from nationaldrivetrain.com. My chain and planetary were shot. I was able to remove one bearing from the case but the other two that are on the shafts have got my stumped. What tool will I need to remove and install the new bearings?I will also need to remove the two needle bearings but not sure where to get the tool to remove and install as well.
I finally tore my case apart and bought a rebuild kit and chain from nationaldrivetrain.com. My chain and planetary were shot. I was able to remove one bearing from the case but the other two that are on the shafts have got my stumped. What tool will I need to remove and install the new bearings?I will also need to remove the two needle bearings but not sure where to get the tool to remove and install as well.
B
BoostedGMC
Guest
Re: Transfer case may be busted
I decided that I will go to aamco tomorrow and have them press the bearings in. I wouldn't think they would want more than 30 bux to press a few bearings. Once that is done all I will need to do is assemble the transfer case.
I got a used planetary from cloneman315. It is in much better shape than the one I took out of my case. When I took my planet out and flipped it over the 4 pins just fell right out. The used one from cloneman315 has all 4 pins nice and tight in the housing. My only concern with it is that when I grab the pinions and move them side to side, there is a little bit of wiggle room. No where near as bad as my old one but it does have a a very slight amount of play. Should this be ok to use?
Also the new chain I bought looks a little different than the one that came out. It is a cloyes #10-033 (One blue link)( not sure what the difference between the 1 and 2 is because I don't even see a blue link on mine)
I decided that I will go to aamco tomorrow and have them press the bearings in. I wouldn't think they would want more than 30 bux to press a few bearings. Once that is done all I will need to do is assemble the transfer case.
I got a used planetary from cloneman315. It is in much better shape than the one I took out of my case. When I took my planet out and flipped it over the 4 pins just fell right out. The used one from cloneman315 has all 4 pins nice and tight in the housing. My only concern with it is that when I grab the pinions and move them side to side, there is a little bit of wiggle room. No where near as bad as my old one but it does have a a very slight amount of play. Should this be ok to use?
Also the new chain I bought looks a little different than the one that came out. It is a cloyes #10-033 (One blue link)( not sure what the difference between the 1 and 2 is because I don't even see a blue link on mine)
SloGN
9Sec Alky V6
Re: Transfer case may be busted
larry
if ya run into any problems let me know as we can use richards shop and finish building it there.
my bet the bearing are ok just the chain is junk but like blake noted checked the shaft that has the scoops on it to make sure it's not broke or stopped up. i have found this to be the results of several fried t-cases
larry
if ya run into any problems let me know as we can use richards shop and finish building it there.
my bet the bearing are ok just the chain is junk but like blake noted checked the shaft that has the scoops on it to make sure it's not broke or stopped up. i have found this to be the results of several fried t-cases
cloneman315
Active member
Re: Transfer case may be busted
maybe we should have a transfer case session,both mine need them and larrys lol
maybe we should have a transfer case session,both mine need them and larrys lol