32RH break-in question

Cowbird

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Happy Sunday everyone! So I’m finally getting more time to work on my 2000 frame up project for my daughter and after receiving my reprogrammed ECM from @Wranglerfix she fired right up! Thanks again Mark for the incredible job! So now I’m going through bleeding brakes, topping off fluids, etc I preparation to test drive it soon and was wondering what steps I need to take to make sure I don’t damage the newly rebuilt 32rh (huge thanks for the video and all the help from @hear and everyone else that gave tips/advice). Do I need to prime it any sort of way? I put a new deep pan on like everyone suggested and I currently have 9 quarts of atf-4 in it, I know that’s not enough but wanted to get it rolling before I started adding more.
 
Happy Sunday everyone! So I’m finally getting more time to work on my 2000 frame up project for my daughter and after receiving my reprogrammed ECM from @Wranglerfix she fired right up! Thanks again Mark for the incredible job! So now I’m going through bleeding brakes, topping off fluids, etc I preparation to test drive it soon and was wondering what steps I need to take to make sure I don’t damage the newly rebuilt 32rh (huge thanks for the video and all the help from @hear and everyone else that gave tips/advice). Do I need to prime it any sort of way? I put a new deep pan on like everyone suggested and I currently have 9 quarts of atf-4 in it, I know that’s not enough but wanted to get it rolling before I started adding more.

To ensure you don’t damage your newly rebuilt 32RH during the break-in period, there are a few key steps you should follow:

Fluid Levels: While it's smart to get it rolling, make sure to fill the transmission to the proper level before hitting the road. 9 quarts of ATF-4 is a good start, but the 32RH will typically require around 12 quarts in total with a deep pan (including the cooler). You want to ensure the fluid is at the correct level, so check it after starting the engine and let it run for a few minutes.

Priming the Transmission: Before you start it, it's a good idea to let the fluid circulate. You can do this by cycling through the gears with the engine off a few times, then check the fluid level. This helps ensure that the pump is primed.

Test Drive: When you do take it for a spin, start with short, easy drives. Avoid hard acceleration or heavy loads on the transmission during the initial break-in period. This will allow the seals and clutches to properly bed in.

Temperature Check: Keep an eye on the transmission temperature—especially during your first few drives. If the temps get too high, it could indicate a problem with fluid circulation or cooling.

Fluid Inspection: After you do some driving, inspect the fluid for any unusual colors or smells and check for any leaks around the pan and lines.

Regular Checks: Lastly, do regular checks on the fluid level and condition after your initial test drives to ensure everything is functioning as it should.

Once you've got everything in order and ensure fluid levels are good, you should be in a solid position to enjoy your new build. Best of luck with the test drive!
 
To ensure you don’t damage your newly rebuilt 32RH during the break-in period, there are a few key steps you should follow:

Fluid Levels: While it's smart to get it rolling, make sure to fill the transmission to the proper level before hitting the road. 9 quarts of ATF-4 is a good start, but the 32RH will typically require around 12 quarts in total with a deep pan (including the cooler). You want to ensure the fluid is at the correct level, so check it after starting the engine and let it run for a few minutes.

Priming the Transmission: Before you start it, it's a good idea to let the fluid circulate. You can do this by cycling through the gears with the engine off a few times, then check the fluid level. This helps ensure that the pump is primed.

Test Drive: When you do take it for a spin, start with short, easy drives. Avoid hard acceleration or heavy loads on the transmission during the initial break-in period. This will allow the seals and clutches to properly bed in.

Temperature Check: Keep an eye on the transmission temperature—especially during your first few drives. If the temps get too high, it could indicate a problem with fluid circulation or cooling.

Fluid Inspection: After you do some driving, inspect the fluid for any unusual colors or smells and check for any leaks around the pan and lines.

Regular Checks: Lastly, do regular checks on the fluid level and condition after your initial test drives to ensure everything is functioning as it should.

Once you've got everything in order and ensure fluid levels are good, you should be in a solid position to enjoy your new build. Best of luck with the test drive!

Thank you Chris, I really appreciate the input. I will try to add the other 3 quarts of fluid maybe tomorrow. I cycled it through the gears with the engine running a few different times and it tried to engage like it should, so that’s a great sign lol. I need to take the steering column apart again and try to get that little “key” put in right that locks the gear shifter from moving when the ignition isn’t in the run position. I swapped this jeep from a manual to automatic with the help of all the different related threads here in the forum and I don’t think I got it seated correctly 🫤. If that’s the biggest problem I have throughout this project then I’m in pretty good shape though!
 
Yeah, thanks ChrAIs!

But that’s basically what you need to do. If you’re gonna let it idle & circulate, leave it in N while you do so. Park doesn’t have the same degree of fluid circulation. Running it through the gears is good, you should feel it shift. I normally do my initial testing with the t-case in N just in case anything weird happens.
 
Thank you Chris, I really appreciate the input.
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I apologize if I didn't seem appreciative to all the help and information given to me here by Chris or anyone else that has taken the time to craft a post or response that I have benefited from, that truly was not my intention. Thank you for the insight @jjvw - you invested considerable effort in crafting that response and I will be more attentive in the future.
 
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I apologize if I didn't seem appreciative to all the help and information given to me here by Chris or anyone else that has taken the time to craft a post or response that I have benefited from, that truly was not my intention. Thank you for the insight @jjvw - you invested considerable effort in crafting that response and I will be more attentive in the future.

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