1998 international 9400

Usually what happens is you had a spring replaced or the suspension apart for some reason and when they reassembled it they installed the tapered seats or spacer blocks backward to make a several axle pitch change. Once way or the other, something has been taken apart and reassembled incorrectly. You also need to know if your ride height is correct in the first place. Trucks can have different types of suspensions from different manufactures. So if you can tell what specific type of suspension you have I can tell you how to measure ride height and what the spec for it is.

 

I had a very similar problem with my 95,IH 9300.When the air was dumped completely,the angle of the driveshaft between the rears,became so severe if you moved the truck,it would bind up and tear out the rear bearing on the front differential output shaft.Mine was ok when operated at the correct level.I put a about a 3/4" spacer on top of the pads to keep the rear from dumping all the way.Would still dump plenty.Truck had the N400 rears.
Mine came from the factory that way,engineering effup.

 

A company I worked for had an 87-9370, actually about 15 at that one location. One of them had a campaign to replace the axle seats. It came from the factory with the wrong ones. It happens. Seats can also be shimmed.

 

If you give the me the last 8 of your vin, I can see what it was built with.

 

Can you shed some light on my truck? 2hsfhasr5xc087585. I know internationals don’t ride smooth, but mine is ridiculous.? My butt is tacking a beat...

 

Make sure your cab air ride is working, and not down all the way and the bump stop hitting all the time. Make sure your main suspension is at the right height. Top of the air bag to the bottom should be 12 1/2" +/- 1/4".

 

I bought a new cab suspension assembly, it got a little better. But still horrible. I will check the ride height as I’m installing new air bags. Ty

 

How I measure the air bag?