Transfer Case questions.
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From: Bald Knob AR
Transfer Case questions.
My transfer case is eating the plastic gear on the speed sensor. I"m on my 3rd plastic gear in a year. It wears the teeth off kinda like the gear is not meshing properly with the one inside the Tcase. It looks like the two gears are barely touching. It just wears off about 1/4 of the depth of the teeth off the plastic gear then it starts jumping teeth. My question is, is the gear inside the case plastic too? Can I get to it by just removing the tail shaft off the Tcase? Is there an adjustment inside the case to make the gears mesh properly (shims maybe)? I'm on my 7th speed sensor and 3rd plastic gear in a year and I think something inside the Tcase is killing the speed sensors along with my E4OD. Thanks for any help.
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From: Bald Knob AR
Actually, it has both on the same sensor. A cable to operate the speedometer and an electrical plug for the tranny computer.
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From: Malahat/Cowichan Valley
if that is the case then the cable could be seized. If it cant turn the gears will strip off in seconds. Give it a shot of lube at the top of the cable. You can check this by taking it off and trying to turn it.
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From: Bald Knob AR
I checked that. The cable turns freely and the speedometer works good up until the gear starts jumping teeth then the speedometer jumps around a lot. It's really not wearing much off the plastic gear at all, mostly just the sharpe edge of the teeth. It's like the gears are barely touching. Thats why I think there is a problem inside the Tcase.
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From: Malahat/Cowichan Valley
have you taken the yoke housing off to check the ring gear? It may be shredded. All you need to do is take the yoke housing off and you will see what i mean. It is four #50 Torx bolts, i believe that is the number anyway that hold the housing on. Drop the drive shaft, pull the housing, it will be clear when you get in there.
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From: Bald Knob AR
have you taken the yoke housing off to check the ring gear? It may be shredded. All you need to do is take the yoke housing off and you will see what i mean. It is four #50 Torx bolts, i believe that is the number anyway that hold the housing on. Drop the drive shaft, pull the housing, it will be clear when you get in there.
Good info, thanks wreckinball. I was wondering if I could just pull that back housing off to get to it.
Another thing I was thinking about today. It seems that the plastic gear is just barely touching the gear in the tcase. Kinda like it's really too small. Is there another plastic gear that is slightly larger for these things? Mine is the white one with 18 teeth I think, been a while since I counted them. Does anyone know what the correct gear for a 90 model, 4x4, E4OD, 410 gears, 235/85/16s is?
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From: Bald Knob AR
OK, another question. I been doing some searching on this board and read where the gear in the case is plastic/fibre too. Is this so? If so that most likely is the problem. I would like to have the parts in hand before I tear it apart so I can put it right back together as this is my daily driver. Thanks.
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From: Bald Knob AR
Thanks again wreckinball, that helps a lot. I'm not gonna tear into it till I have the parts in hand. When I do if I have any more problems I will be sure to give you a shout.
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From: Bald Knob AR
Well I finally got the parts and got em installed. All I can say is HOLY COW my transmission shifts great now. The gear inside the tcase was stripped and was allowing it to jump teeth at slow speeds confusing the transmission on the speed which caused constant hunting of gears at anything below 30mph.
Thank you wreckinball for all your help. The pdf breakdown files were especially helpful.
Thank you wreckinball for all your help. The pdf breakdown files were especially helpful.
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Hi Wreckinball and galute,
I too have this problem and was wondering if you'd be kind enough to send me the PDF. I'd be grateful. Or if anyone else has a diagram that they can post.
Also, I need the new electric plug that goes from transfer case to trans. Mine has broken tabs and I can not find a part number. Does anyone know off hand?
1990 F350 sclb, 4x4, 7.3, E4od, 4.10, 37s, Thanks, DC
I too have this problem and was wondering if you'd be kind enough to send me the PDF. I'd be grateful. Or if anyone else has a diagram that they can post.
Also, I need the new electric plug that goes from transfer case to trans. Mine has broken tabs and I can not find a part number. Does anyone know off hand?
1990 F350 sclb, 4x4, 7.3, E4od, 4.10, 37s, Thanks, DC
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