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The main issue at this edition is Vibration, shudder, shimmy, wobble after hitting an imperfection in the road at upwards of 70 mph. Symptom : Pulsation, Shimmy / Shake, Shudder, Vibration, case verification : The vehicle shakes and continues to shake; the shake does not stop until the vehicle is slowed down to a halt. This pertains to Heavy Duty (DR2500 and DR3500) vehicles. Step by step inspection : 1. Inspect and verify the presence of the anti-tilt seal and chrome plated washer between the tie rod and knuckle. 2. Set the vehicle to the following specification. 3. Toe to +0.15 degrees toe in per side (total +0.3 degrees) 4. Front tire pressure to 5.7L motor 40 psi (with no load) 60 psi (loaded to GVW) Diesel motor 50 psi (with no load) 60 psi (loaded to GVW) 5. Rear tire pressure to 5.7L motor 40 psi (with no load) 70 psi (loaded to GVW) Diesel motor 40 psi (with no load) 70 psi (loaded to GVW) 6. Balance the tires to 000 readings on a wheel balancer 7. Disassemble outer tie rod from knuckle and reassemble as follows… 1. Inspect steering damper for leaks, binding, tube damage, shaft damage. 2. Disassemble damper from tie rod and stroke it in and out. The force 3. Required to compress should feel the same as the force required to extend. 4. Replace outer tie rods using the following procedure: Loosen the following components, to drop the suspension then raise the suspension back up to ride height and re-torque all of the joints.
Tags : rear tire pressure, outer tie rods, steering damper, wheel balancer, tube damage, tie rod, ram pickup, pulsation, diesel motor, 7l, imperfection, psi, leaks, vibration, tilt
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