Hi,currently rebuilding a np-246 for 2095 chev Silverado and I have the j-44295 clutch shim tool, but I also require the plate no 4 that goes between part 2 and part 3 to determine shim, do you have the thickness of the spacer that goes between 2 and 3 ? Oh btw your videos are incredible you don't miss anything!
@@DrShock thanks for the reply, no the original kit was a J-44295 and then later it was changed to J-44295A which includes what they refer to as a selector ,it goes between the part no.2 which is the donut weight, and the part no. 3 where you insert the feeler gauges to determine the necessary shim
A little more info, when the tool is installed , the new clutch pack is correct and the measurement is approximately 3.89 mm and with the old stack it's about 3.95 mm. Which is just to much. So there must of been a design change that changed the height of stack
I don't have this superseded version "A" of the tool, as it was not released until after the C/K truck (GMT400) era. I see that in addition to the original J-44295-1 base, J-44295-2 donut weight, and the J-44295-3 tall gauge tool they added into this "A" suffix kit two more gauges. The J-44295-4 and J-44295-5 shim selection spacers. The data I was able to find (GM service bulletin 05-04-21-005 from August 2005) indicates these additional shim selection spacers are _not_ to be used in earlier NP246 clutches, but rather only on model year 2004. There was apparently a design change that removed the detent spring, and redesigned the return spring, starting in late 2003 for that model year and Kent-Moore introduced the spacer J-44295-4 for this new application _(Whenever the second design Clutch Hub and the second design Apply Plate are used, a revised stack height will have to be used. This implements a shim J-44295-4 (0.085 in. thick) in conjunction with the clutch pack shimming kit J-44295)_ is the exact quotation. Hope this helps. I was unable to locate any information on the purpose or usage of new shim spacer J-44295-5.
@@DrShock thanks very much for the in depth info, I can take the total measurement and deduct the . 085 and that should put me in the correct shim needed to set the clutch stack up, thank you for going out of your way to assist me on this, it is very much appreciated!
I gotta say, I love the way you are very thorough, and everything is clean. I operate the same way. Also, the video was great. Very slow, and thorough, the explanations were great. Very good video. 100% I've rebuilt so many of these and I love watching people's videos of how they do them. I want to add also, I HATE putting the case half back on they are a buger for me. Lol
Your high level of organization and having your crap totally together gives me a weird anxiety when I look at my own workspace. But you did a stellar job showing a detailed reassembly of this TC and that is exactly what I needed.
Great. Since I do professional repair work I pay for access to the OEM parts ordering system like any shop would. The GM version provides the part numbers down to every single bolt and nut. There are search links in the description of each video for part though.
Hi DrShock. Thanks for the videos, they are great! If you get a chance could you please measure the height of the step on the business end of the Merchant Automotive 10325 fwd output seal installer. I’d like to install the same seal in my sons NP263 but I don’t have the tool. I believe I can fashion my own installer, I just need to know how much deeper the inner part of the seal is pushed in relation to the outer flange. Thanks
You can use the actuator lever itself as a driver for it's needle bearing install. There is enough room. Just make sure you install with the o-ring up, be gentle when knocking it in and there's no need for a special tool.
Thanks. There's a link in the description for those tools. There are two sizes I work with for such tasks, the larger one with the more parkerized finish is the G409P from Wilde Tools. The smaller one with the more black oxide finish is the 44900 from Lisle Tools. Both are USA made.
I've read that the NP246 for a 60LE transmission is the same as for an 80LE except for the input shaft and planet gear assy. Do you know if this is true?
The number of splines on the input shaft differs between the two transmission applications (because the transmission output shafts differ). As best I recall, the 4L80E version will have 32, the 4L60E will have only 27 (btw the shaft bearings are different also). Depending on the model year, some NP246s mated to the 4L60E will only have a 3 pinion planetary gear set, which would also need to be replaced for 4L80E use, if present. But you may want to verify these points as I'm stating it from memory only.
There would be alot of similarity between the NP236 and the NP246, and I tried to call those out as we go thru the service manual rebuild in this video series. But the 136 would be even further differences, and not one I'm directly familiar with to comment on specifically. I would presume if you've worked on the NP236 then you would find the 136 very similar though many differences from the 246.
Unfortunately GM never published a chain specification or mileage. So there's no real guidance to go on. Personally, I just swap them out during a rebuild if they are suspected to be the original OEM.
Yep, that's a rubber mallet tapping lightly for _persuasion_ due to tighter tolerances with new OEM parts, or you could use a small block of wood. You do *not* use metal tools here, those approaches would come under the _forcing it_ category.
You want to line it up into the slot cut out for it, and then when you have the assembly further along, you use a wrench at the encoder motor side to reposition it back into 2 HI position you started with. Part II I believe I goes over that position re-alignment part.
SIR CAN I REMOVE MY TRANSFER CASE NP8 FROM MY 2007 CHEVY TAHOE FOREVER ? IF SO WHAT DO I NEED 1 HAVE 3 AND NEED TO USE THEM AS LIMOUSINES 4X4 NOT NEEDED
@@DrShock wow that is awesome. I should elaborate, I bought pressure and apply plates when I built my 4l60e and they were all slightly thicker than the spec.
несмотря на то что на английском, но очень полезное видео, спасибо ! а как называется этот колибратор для фрикционов ? / despite the fact that it is in English, but a very useful video, thank you ! and what is the name of this colibrator for frictions ?
Hi,currently rebuilding a np-246 for 2095 chev Silverado and I have the j-44295 clutch shim tool, but I also require the plate no 4 that goes between part 2 and part 3 to determine shim, do you have the thickness of the spacer that goes between 2 and 3 ? Oh btw your videos are incredible you don't miss anything!
Thanks. Are you asking about the donut spacer that is part of the Kent-Moore clutch shim tool set?
@@DrShock thanks for the reply, no the original kit was a J-44295 and then later it was changed to J-44295A which includes what they refer to as a selector ,it goes between the part no.2 which is the donut weight, and the part no. 3 where you insert the feeler gauges to determine the necessary shim
A little more info, when the tool is installed , the new clutch pack is correct and the measurement is approximately 3.89 mm and with the old stack it's about 3.95 mm. Which is just to much. So there must of been a design change that changed the height of stack
I don't have this superseded version "A" of the tool, as it was not released until after the C/K truck (GMT400) era. I see that in addition to the original J-44295-1 base, J-44295-2 donut weight, and the J-44295-3 tall gauge tool they added into this "A" suffix kit two more gauges. The J-44295-4 and J-44295-5 shim selection spacers.
The data I was able to find (GM service bulletin 05-04-21-005 from August 2005) indicates these additional shim selection spacers are _not_ to be used in earlier NP246 clutches, but rather only on model year 2004. There was apparently a design change that removed the detent spring, and redesigned the return spring, starting in late 2003 for that model year and Kent-Moore introduced the spacer J-44295-4 for this new application _(Whenever the second design Clutch Hub and the second design Apply Plate are used, a revised stack height will have to be used. This implements a shim J-44295-4 (0.085 in. thick) in conjunction with the clutch pack shimming kit J-44295)_ is the exact quotation. Hope this helps. I was unable to locate any information on the purpose or usage of new shim spacer J-44295-5.
@@DrShock thanks very much for the in depth info, I can take the total measurement and deduct the . 085 and that should put me in the correct shim needed to set the clutch stack up, thank you for going out of your way to assist me on this, it is very much appreciated!
I gotta say, I love the way you are very thorough, and everything is clean. I operate the same way. Also, the video was great. Very slow, and thorough, the explanations were great. Very good video. 100% I've rebuilt so many of these and I love watching people's videos of how they do them. I want to add also, I HATE putting the case half back on they are a buger for me. Lol
Your high level of organization and having your crap totally together gives me a weird anxiety when I look at my own workspace. But you did a stellar job showing a detailed reassembly of this TC and that is exactly what I needed.
Thanks!
You are such a great resource, my HVAC box in my 97 GMT is acting up and I looked to see if you had a video first.
Got it!! Where did you get all the GM Part numbers?
Great. Since I do professional repair work I pay for access to the OEM parts ordering system like any shop would. The GM version provides the part numbers down to every single bolt and nut. There are search links in the description of each video for part though.
30 ft-lb is the torque spec for the clutch pivot pins (2). Thanks!
Hi DrShock. Thanks for the videos, they are great! If you get a chance could you please measure the height of the step on the business end of the Merchant Automotive 10325 fwd output seal installer. I’d like to install the same seal in my sons NP263 but I don’t have the tool. I believe I can fashion my own installer, I just need to know how much deeper the inner part of the seal is pushed in relation to the outer flange. Thanks
Thanks, sorry I don't have that 10325 Merchant driver anymore. I just borrowed it to show as an example of an aftermarket tool.
You can use the actuator lever itself as a driver for it's needle bearing install. There is enough room. Just make sure you install with the o-ring up, be gentle when knocking it in and there's no need for a special tool.
Thank you for such an in depth reassembly video! What model are your snap ring pliers? I like the knurled tips.
Thanks. There's a link in the description for those tools.
There are two sizes I work with for such tasks, the larger one with the more parkerized finish is the G409P from Wilde Tools. The smaller one with the more black oxide finish is the 44900 from Lisle Tools. Both are USA made.
Did you do a video of the tear down? Explained what goes bad with the 246?
Yes, there is a two part disassembly and removal series. Here's a playlist with everything NP246 related - ruclips.net/video/UA3Y3CHPgEA/видео.html
I've read that the NP246 for a 60LE transmission is the same as for an 80LE except for the input shaft and planet gear assy. Do you know if this is true?
The number of splines on the input shaft differs between the two transmission applications (because the transmission output shafts differ). As best I recall, the 4L80E version will have 32, the 4L60E will have only 27 (btw the shaft bearings are different also). Depending on the model year, some NP246s mated to the 4L60E will only have a 3 pinion planetary gear set, which would also need to be replaced for 4L80E use, if present. But you may want to verify these points as I'm stating it from memory only.
Could this series of disassembly and assembly be applied to the NP-136 used in a 2001 Chevy Astro AWD? Thanks
There would be alot of similarity between the NP236 and the NP246, and I tried to call those out as we go thru the service manual rebuild in this video series.
But the 136 would be even further differences, and not one I'm directly familiar with to comment on specifically. I would presume if you've worked on the NP236 then you would find the 136 very similar though many differences from the 246.
@@DrShock Thank you! Also, how does one check if the chain is stretched and needs to be replaced?
Unfortunately GM never published a chain specification or mileage. So there's no real guidance to go on. Personally, I just swap them out during a rebuild if they are suspected to be the original OEM.
شكران
40:24 “you don’t want to force it” meanwhile been beating it with a mallet for almost 2 minutes
Yep, that's a rubber mallet tapping lightly for _persuasion_ due to tighter tolerances with new OEM parts, or you could use a small block of wood. You do *not* use metal tools here, those approaches would come under the _forcing it_ category.
When installing range fork do you simply put the roller into the selectors lever slot or is there a specific spot i should have it at?
You want to line it up into the slot cut out for it, and then when you have the assembly further along, you use a wrench at the encoder motor side to reposition it back into 2 HI position you started with. Part II I believe I goes over that position re-alignment part.
❤❤
Do all these GM parts come in a master rebuild kit?
No, unfortunately GM only sells their parts individually.
SIR CAN I REMOVE MY TRANSFER CASE NP8 FROM MY 2007 CHEVY TAHOE FOREVER ? IF SO WHAT DO I NEED 1 HAVE 3 AND NEED TO USE THEM AS LIMOUSINES 4X4 NOT NEEDED
I need to learn where to get that clutch tool for cheap haha
The shims are slightly off from the advertised thickness.
The GM replacement one I bought measured out exactly as spec'd.
@@DrShock wow that is awesome. I should elaborate, I bought pressure and apply plates when I built my 4l60e and they were all slightly thicker than the spec.
That's where my transfercase is not working. Range roller and actuator slot
Would it be worn parts? In that area
Как всегде полезное видио! Привет из вражеской России!)
Control actuator shift cams aren’t interchangeable?
Where are you located? I wish I could rent a J44295!
I believe if it were me I'd go find a NP/NV 243 transfer case to put in the 246s place.
несмотря на то что на английском, но очень полезное видео, спасибо ! а как называется этот колибратор для фрикционов ? / despite the fact that it is in English, but a very useful video, thank you ! and what is the name of this colibrator for frictions ?
Вы имеете в виду инструмент, который использовался?
@@DrShock я про то и с помошью какого приспособления/инструмента измерить и подбирать фрикционные диски , как он называется ?
@@DrShock Kent-Moore J-44295 ?
Да, это номер модели. Это инструмент для выбора упорной пластины пакета сцепления.
@@DrShock спасибо