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NP435 clutch tool

Posted: Thu Jun 09, 2016 12:23 pm
by LuckyBaldwin
I had problems finding the 1" x 10 spline x 3/4" pilot clutch alignment tool. (p/n: TAT5349) It's made by Pioneer Automotive Industries, Meridian, MS. I think they've stopped making it, and it's gone obsolete. Pioneer's catalog has it incorrectly listed as 383 only with 318's listed as 23 splines. My '68 318 W100 has a 10 spline in it. I believe the 23 spline shafts were used in the NP420s with the 435s getting 10 spline shafts (not positive about that tho).

O'reilly and Autozone here couldn't order it. I finally got it from RockAuto and they only had 12 left when i ordered mine. If anyone here might have a need for one in the future, now might be the time to buy it.

http://www.rockauto.com/en/catalog/dodg ... +tool,7700

Just wanted everyone here to have the 1st shot at these if they have gone obsolete.

Re: NP435 clutch tool

Posted: Thu Jun 09, 2016 12:33 pm
by Jims68
Years ago.... I used a broom handle shaved down to fit, and it worked. Just an idea :idea for you.

AH... nevermind. I didn't quite read it thoroughly.... you already bought one! :thinking Speed reading posts doesn't do much good!

Re: NP435 clutch tool

Posted: Thu Jun 09, 2016 1:25 pm
by Hobcobble
The 23 spline input shaft began use in '69. The '68 and earlier Sweptlines
with the hydraulic clutch systems used the 10 spline input shaft. This
applied to A745, NP420, NP435.... :study
John

Re: NP435 clutch tool

Posted: Sat Jun 11, 2016 12:14 pm
by LuckyBaldwin
thanks Jim. that's an idea! maybe chuck it up in the drill press and turn it like a vertical wood lathe. that should keep the pilot end concentric to the o.d. i may never waste time trying to find another one of these lol.

Re: NP435 clutch tool

Posted: Sat Jun 11, 2016 12:29 pm
by LuckyBaldwin
thanks John. i've always wondered about that.

my A833 thinking (hemi 18 spline vs. regular 23) is what got me thinking heavy duty vs. light duty controls spline count. never would have guessed was a model year production change. i'll bet those bigger splines are more expensive to make, hence the change.

Re: NP435 clutch tool

Posted: Sun Jun 12, 2016 9:04 am
by digdoug
The reasoning is that more,smaller splines have more contact area and cut less into the base diameter of the shaft,making for a stronger shaft.

Re: NP435 clutch tool

Posted: Sun Jun 12, 2016 5:18 pm
by Hobcobble
digdoug wrote:The reasoning is that more,smaller splines have more contact area and cut less into the base diameter of the shaft,making for a stronger shaft.
Thanks for splining that. :joker

John

Re: NP435 clutch tool

Posted: Tue Mar 28, 2017 2:50 am
by Macros
with the hydraulic clutch systems used the 10 spline input shaft. This
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