A conveyor system, comprising: an endless belt mounted in a longitudinal direction through a service line, the endless belt having an upper transport portion adapted to move a wheeled structure through the service line, and a lower return portion; a support deck positioned below the upper transport portion of the endless belt to support the endless belt, the support deck having a belt contact surface extending along a top of the support deck and in contact with the upper transport portion of the endless belt, the belt contact surface being constructed from a material that is at least partially thermoplastic; a belt rinsing system including a rinsing system conduit arrangement connectable to a source of rinsing system liquid, and at least one belt rinsing arrangement, wherein each of the at least one belt rinsing arrangement includes a rinsing system dirt pass-through aperture in the support deck, over which the upper transport portion of the endless belt travels during operation; and at least one rinsing system outlet from the rinsing system conduit arrangement positioned proximate to the rinsing system dirt pass-through aperture and positioned to eject rinsing system liquid onto the endless belt upstream from a downstream edge of the rinsing system dirt pass-through aperture in order to capture at least some of the ejected liquid through the rinsing system dirt pass-through aperture, characterized in that the belt contact surface is formed of a set of wear plates formed from the material, wherein an expansion gap is provided between the wear plates to allow for thermal expansion of the wear plates. an endless belt mounted in a longitudinal direction through a service line, the endless belt having an upper transport portion adapted to move a wheeled structure through the service line, and a lower return portion; a support deck positioned below the upper transport portion of the endless belt to support the endless belt, the support deck having a belt contact surface extending along a top of the support deck and in contact with the upper transport portion of the endless belt, the belt contact surface being constructed from a material that is at least partially thermoplastic; a belt rinsing system including a rinsing system conduit arrangement connectable to a source of rinsing system liquid, and at least one belt rinsing arrangement, wherein each of the at least one belt rinsing arrangement includes a rinsing system dirt pass-through aperture in the support deck, over which the upper transport portion of the endless belt travels during operation; and at least one rinsing system outlet from the rinsing system conduit arrangement positioned proximate to the rinsing system dirt pass-through aperture and positioned to eject rinsing system liquid onto the endless belt upstream from a downstream edge of the rinsing system dirt pass-through aperture in order to capture at least some of the ejected liquid through the rinsing system dirt pass-through aperture, characterized in that the belt contact surface is formed of a set of wear plates formed from the material, wherein an expansion gap is provided between the wear plates to allow for thermal expansion of the wear plates. a rinsing system dirt pass-through aperture in the support deck, over which the upper transport portion of the endless belt travels during operation; and at least one rinsing system outlet from the rinsing system conduit arrangement positioned proximate to the rinsing system dirt pass-through aperture and positioned to eject rinsing system liquid onto the endless belt upstream from a downstream edge of the rinsing system dirt pass-through aperture in order to capture at least some of the ejected liquid through the rinsing system dirt pass-through aperture, characterized in that the belt contact surface is formed of a set of wear plates formed from the material, wherein an expansion gap is provided between the wear plates to allow for thermal expansion of the wear plates.