![]() In my opinion, front wheel bearings need to be bigger. One benefit of the larger axles is larger front axle wheel bearings. springs, increase the caster settings and you maybe surprised. Some vehicle 13,200 lbs front axles are available, but may still be a marginal solution, in my opinion.įor driver complaints regarding trucks that “float and wander,” I recommend replacing the springs with 14,600 lb. springs especially if it is a sleeper and or a reefer unit is on the front of the trailer. also change to an approximately 14,000 axle with 14,600 lbs. As a result, I would suggest if you are spec’ing a Class 8 vehicle for a gross weight 80,000 lbs. We also installed stiffer air ride cab shocks. I now completely understand the value of shocks and their angle. on 50 trucks, and changed the angle of the shocks, from 50º to a perfectly vertical 90º. We solved the issue by replacing the 12,000 lb. In the cab, the driver’s seat and the front end floated and the driver could not drive without over steering and the fatigue was wearing him out. The fleet had premium vehicles I mean nice trucks with a high center of gravity cab. It was so bad the drivers were quitting and there was even a lawsuit pending. The Dana 30 uses king pins which are held in with four bolts on the top and bottom. I was working with a fleet that was fielding complaints about this problem, which was creating operational and driver issues. The Dana 44 HD front axle is legendary for toughness and performance. It slows tire outer edge tire wear, stiffens up the front of the vehicle gives the tractor more stability to stay up right and also reduces the ride complaints of the truck floating and wandering all over the highway and on secondary roads. However, I have proven to myself over the years that it does. Heavy springs on the front axle? Engineers and salespeople said we did not need the extra capacity, and it would hurt the ride. front springs, when I could not buy what I wanted. I later increased the capacity by specing 14,000 lb. I believed this was due to the steer axle tires having accelerated tire wear because the front of the truck would push down in the corners (like in NASCAR race, pushing in the corners at 180 MPH). The reason I did this was not for the added capacity, but for the ability to stiffen up the front axle stability. Check front end weight Adjust if necessary Non-steering Wheel Recovery 1. Grease tie rod ends - or - Replace ends 3. I was always questioned about spending more money for “nothing.” Grease king pin - or - Replace with king pin kit 2. I have done everything I can think of to repair the problem and even sent the tractors to the local frontend shop.”įor years, when spec’ing tractors, I would increase the front axle capacity of the springs from the standard 12,000 lbs to 13,200 lb. ![]() Description The steerable AAS-724-FA has an axle capacity of 20,000 lbs. Bronze bushings need to be roached to fit the pins. If the bushings aren't the problem, you can try new drawkeys, but it's only a short term fix and it dodges the real problem: the axle eye is streched out. Here’s a concern I’ve heard: “Our tractors wander, floating feelings and the drivers keep writing them up. Whether youre looking to replace typical stainless-steel steerable lift axle. Those 7500 lb IH axles are notorious for chewing up drawkeys.
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