I'm following this because my w9 doesn't have the stack of spacers under the front springs .
My truck came from factory with a 12k front spring and after I broke one I changed to 13.2 k springs .
I'm usually over 12.5 k load on front end when loaded and even a half tank of fuel .
I have always had low clearance under brackets of fuel tanks , to the level of I can't get into some steep dock pits .
Front leaf springs
Discussion in 'Kenworth Forum' started by Jt20, Nov 14, 2017.
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AModelCat Thanks this.
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6" are you sure? I've never seen a frame from the factory off by more than an inch or two. IMO rear suspension are made to be mounted to a frame that is parallel to the ground. My truck is 1 1/2 higher in the rear. Pete thought it was important enough that they made a note on the spec sheet and the dealer recommended a higher block on the front springs to level the frame. Btw it was a one piece 3" block with only a tiny wedge block under to set caster. I'm not saying it"ll fix the ride issues but it needs to be addressed IMO. but it's his truck so that's his choice.
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Changing the thickness or adding/removing spacers will never effect the ride quality on the steer axle. They do not cause the spring rate to change.
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I replaced an AG100 with an AG380 (Pete Flex-aire). To get the frame on the '93 W9 to match the way the frame sat on the donor truck ('07 W9) I had to raise the front of the the 93 about 1 1/2". That put the frame correct and all the driveshaft angles. -
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I apologize for my comment. I realized this morning that it was harsh poorly said. It should have been something to the effect that all the opinions made on here aren't a substitute for facts and won't point him in the right direction. Suggestions on where to look are helpful though.
Which frame? There is a relation between the suspension (front and rear), driveline angle, and angle of the transmission and rears. There is an explanation about this in a driveline troubleshooting guide by Eaton? on the internet. -
Kw 2 leaf spring part# 59430
Rated @ 5900lbs each
Axle Dana rated @ 13200lbs
Kw 3 leaf spring part# 59524 rated @5900lbs each PACCAR part# B81-1006
Check your engine and cab mounts four for engine and 2 for cab part# 26509-11. K066-435-3 , 2 of eachbest of luck. -
Sorry we cannot haul 20k on front by adding leaf springs when axle beam tires is rated for less , adding or removing leaf springs is bit of confusing , thanks .
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