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NT88 Jake Brake

Posted By Ryan Monday, January 06, 2020 6:58 AM
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Ryan
 Posted Monday, January 06, 2020 6:58 AM
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Hopefully I can get some good news. I have a 1989 International with an NT88 350 CPL 840 which is a fixed timing engine. I came across a brand new (NOS)full Jacob's Brake kit complete still in the boxes. However, it is a model number 014878, for a step timing engine. Is there a way to make this work? Any help would be appreciated.

Make that Model 430, Housing Assembly 014878
Monday, January 06, 2020 8:21 AM by Ryan
Newto
 Posted Monday, January 06, 2020 8:27 AM
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Hi Ryan,

i4878 is the actual part number of the housing.......which is part of Jacobs Model 430.

Model 430 is good for both STC & Fixed Time Engines but........as far as I know the only difference is in the slave piston Auto-Lash Screws.

You will need to remove the current screws and fit p/n 16012 which also changes the slave piston clearance from .030" to .024".

I believe that is the only difference between the 2 engines.

Hope that helps,

Newto
Tattoo
 Posted Monday, January 06, 2020 2:41 PM
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Glad to see you posting here Newto! I've been a little worried about you. Are you doing ok?
Newto
 Posted Monday, January 06, 2020 3:42 PM
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Ahhhh....yeah.....I'm doing ok........

If you're referring to our wild fires then the ones near me got put under control about 2 weeks ago but 2 of my retired ex employees are right in the thick of it in 2 different locations so I've been helping out down in their area......evacuations.....no power.....no cellphone coverage....petrol stations out of gas and deliveries not possible due to highway road closures....supermarkets out of food..

you know......just the usual disaster scenarios......

and its far from over.....i'm just back home gathering up more supplies before I head back to the front.

Besides all that......how are you progressing with your truck?????

Newto
Ryan
 Posted Monday, January 06, 2020 4:44 PM
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Thank you for that info. I was hoping I hadn't ended up with a set I can't use.
Tattoo
 Posted Wednesday, January 08, 2020 1:59 PM
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Newto, I'm sorry that you good folks are dealing with all of that. We'll keep you in our thoughts and hope that the fires are under control and things get back to normal soon.

My truck is coming along nicely. I'm really enjoying working on it and learning along the way. I appreciate all of your help and I'll post again soon on my original thread (apologies for hijacking this one!)

Mean time, Stay Safe!

Best!

Bryan
Ryan
 Posted Tuesday, March 10, 2020 5:22 PM
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Newton
I was able to find and replace the auto lash screws as you suggested and they work great. Thank you for the information.

Ryan
Newto
 Posted Wednesday, March 11, 2020 10:28 AM
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you're welcome.....glad to be able to help......and thank you for updating us that everything worked out ok!!

Newto

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