Default Th400 ? 

Old 07-21-2013, 09:09 AM   #1
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I have a 1979 CJ7 I6 with a TH400. On the right side near the top of the case is a small tube that looks like wire insulation without the wire. Is this a vent? If not what is it? Any suggestions on how to improve it to keep water out? Thanks, Rod

 

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Default Re: Th400 ? 

Old 07-21-2013, 10:57 AM   #2
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That should be a vacuum line for the E-drive vacuum motor on the transfer case.

 

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Default Re: Th400 ? 

Old 07-22-2013, 08:18 AM   #3
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Vehicle(s): 1979 Jeep CJ7 TH400 Automatic 258 I6 Quadratrac Amc 20 rear & Dana 30 front, 32 x 11.5 x 15 tires. Currently a Complete Custom Rebuild in progress. Also I own a 2001 Jeep Cherokee, White, all stock with 4.0L. automatic, and police package. Best part of that is it came with leather seats! I use it as my emergency response vehicle for all County emergencies. LED Lightbar installed on top.
 
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No. I know all about those lines. This is on the automatic transmission case, near the top, right hand side, and close to the engine block. There is an indentation in the transmission case where this comes out. Rod




Tried to insert a picture, but not having much luck.

 

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Old 07-23-2013, 07:09 PM   #4
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Yes that is the transmission vent. You could put a large vacuum line on it and run it up the firewall then put a vent cap on it.


 

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Default Re: Th400 ? 

Old 07-26-2013, 07:38 AM   #5
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Vehicle(s): 1979 Jeep CJ7 TH400 Automatic 258 I6 Quadratrac Amc 20 rear & Dana 30 front, 32 x 11.5 x 15 tires. Currently a Complete Custom Rebuild in progress. Also I own a 2001 Jeep Cherokee, White, all stock with 4.0L. automatic, and police package. Best part of that is it came with leather seats! I use it as my emergency response vehicle for all County emergencies. LED Lightbar installed on top.
 
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Shifter, Rod

 

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