Note: Casters should only be replaced with identical castors from the manufacturer. This ensures that the cart/hand truck remain level in its various positions.
Whether it is a 2-in-1, 3-in-1, or 4-in-1, all hand trucks utilize the same caster, part S45005509, which has a 4-inch diameter wheel. Each caster is comprised of a wheel, wheel housing, ball bearings swivel, and bolts with locknuts:
Casters include two nuts, however depending on model, the one above the wheel housing may not be accessible. Models with the load-assist mode will have a black plastic cover that is permanently riveted into place.
If you are uncertain about whether your hand truck has this feature, load-assist offers support when the cart is tilted from an upright position.
1. For units without the black covers, it is possible to remove the entire caster by loosening the nut above the wheel housing. Using a socket wrench, remove and replace the caster, ensuring that the nut is correctly threaded and fully tightened. By nature, a locknut will maintain position while the rest of the caster is unscrewed.
2. For units with the riveted caps, it is only possible to replace the wheel of the caster by loosening the locknut at the side of the wheel housing.