Question: If I purchase the complete transmission unit, can I additionally order one separate internal steel belt assembly as spare part?

Answer: Yes, we can supply separate K313 steel belt assemblies as spare goods besides complete remanufactured transmissions. These belts follow OEM original specifications and have passed strict hardness and wear tests. You may place spare‑part orders together with whole‑unit orders or arrange independent spare‑part purchases. Please note spare‑part pricing differs from whole‑machine discount terms. Kindly offer the original gearbox part number to confirm correct belt variant, since slight version differences exist. We can arrange combined packing to help you save ocean‑shipping logistics cost.

Question: What cleaning process do you use during remanufacturing teardown, will there be residual old‑oil contaminants left on components?

Answer: We adopt multi‑stage cleaning procedures for all disassembled components. Heavy oil sludge is removed by high‑temperature chemical soaking tank first, followed by high‑pressure jet washing, ultrasonic cleaning and final air blowing‑off. Critical hydraulic parts will go through secondary fine‑cleaning to eliminate metal debris and old oil residue. Every cleaned part gets visual inspection before reassembly. Strict cleaning standards greatly lower the risk of leftover impurities triggering early valve‑body blockage. We follow consistent cleaning workflow for both sample orders and bulk container orders to keep stable product quality.

Question: Do sample‑order units and mass‑production bulk units run on the same production line and follow identical quality inspection standards?

Answer: Yes, sample transmission units are produced on our regular remanufacturing production line with exactly the same inspection rules as bulk orders. We do not build special dedicated samples. Every unit, whether for sample testing or full‑container wholesale, goes through full disassembly, component screening, reassembly and complete hydraulic bench test. Each unit is engraved with an independent trace serial number for quality tracking. The only difference lies in order pricing. If your sample passes evaluation, mass production will keep the same technical configuration so you can avoid inconsistent performance between samples and later bulk goods.