For 2003 F53 front wheel bearings, use high-quality lithium complex grease rated for wheel bearings, such as Valvoline MaxLife or Timken grease. Avoid mixing different grease types and follow the proper torque sequence: 30 ft-lbs, back off, then 17 in-lbs.
Slideout rubbing wall with smaller bottom gap suggests drooping - worn lower rollers or adjustment needed. Inspect rollers, check mounting bolts, and look for floor damage underneath.
A loud cracking noise from your Dutchstar chassis when hitting bumps is likely a suspension component failure, loose chassis connection, or body mount issue. Start by visually inspecting suspension components, sway bars, and chassis connections for damage or looseness.
Replacing an F53 rear pinion seal requires specialized tools including a 1-inch drive socket, torque multiplier, and seal pullers. This is a complex 6-8 hour job that many RV owners should consider having done professionally due to the precise torque requirements and driveline balancing concerns.
Bilstein 4600 is best value upgrade for E-450 Class C with occasional towing. Good balance of comfort and control. Koni FSD offers premium ride quality at higher cost. Both significantly better than stock shocks.
Rear sway bar bushing replacement straightforward with basic tools. Consider polyurethane upgrade. Replace end links if worn while accessible.
Your quad shock installation approach on the F-53 chassis is sound, and your initial 30-mile test showing no harshness is encouraging. The key will be monitoring performance over longer distances and various road conditions.
A steering stabilizer helps reduce wander but is not always necessary. Complete the Quick Fix and basic checks first - a stabilizer masks problems rather than fixing them. If coach drives straight after maintenance, you may not need one.
Rear hub oil leak on F53 is axle seal failure. Oil on inside tire means seal is leaking diff fluid. Stop driving to prevent brake contamination. Repair involves pulling axle and replacing seal.