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"Select Trac" question

Old Jul 18, 2023 | 06:37 PM
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oldnslow's Avatar
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Default "Select Trac" question

I have Select Trac in my Cherokee. What is going on inside the transfer case when comparing " 4 hi and 4 lock"? I know 4hi is ok any time and 4lock is slippery surface only, but what is the transfer case doing? Is it acting like a 3rd differential in 4hi?
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Old Jul 18, 2023 | 07:27 PM
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Jim Malcolm's Avatar
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https://www.cherokeeforum.com/f2/242...-modes-232342/
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Old Jul 19, 2023 | 02:29 AM
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Originally Posted by oldnslow
I have Select Trac in my Cherokee. What is going on inside the transfer case when comparing " 4 hi and 4 lock"? I know 4hi is ok any time and 4lock is slippery surface only, but what is the transfer case doing? Is it acting like a 3rd differential in 4hi?
Yeah basically, in 4hi the transfer case acts as a center differential allowing each output shaft to spin at different rates while cornering for regular driving conditions. 4 lock locks both shafts together for off-roading and crawling around.
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