1E6B30-26652 Shifter Assembly — CHANGE Mechanism for Yanmar AW82/AW85 Harvester Transmission

The 1E6B30-26652 is the CHANGE shifter assembly designed specifically for the Yanmar AW82 and AW85 combine harvesters. Unlike standard forklift transmission shifters that operate in a simple forward-reverse pattern, this harvester shifter controls the gear change mechanism within the transmission — engaging and disengaging different gear ratios as the harvester moves through varying field conditions and crop densities. The assembly includes the shifter fork, shift rail, and engagement collar as a complete unit, eliminating the need to source individual internal transmission components separately. It is specifically matched to the Yanmar AW82/AW85 transmission case dimensions and is NOT interchangeable with similar-looking shifter assemblies from Kubota or Iseki harvesters, as the fork geometry and rail spacing differ by 3-5mm between manufacturers. Installing an incorrect shifter assembly will result in partial gear engagement and eventual transmission damage.

Installing a shifter assembly in a Yanmar harvester transmission requires the gearbox to be split open — this is not an external bolt-on component. Before disassembly, mark the transmission case alignment dowels with a center punch or paint marker; the case halves must go back in the exact same orientation or the shifter rail will bind on reassembly, causing stiff gear changes and accelerated fork wear. The shifter fork pads have a critical wear limit of 0.3mm; if the fork pad surface shows scuffing deeper than this threshold, replace the entire assembly rather than attempting to rebuild — worn pads cause incomplete gear engagement, which leads to the transmission jumping out of gear under load during field harvesting operations. After installation, manually shift through all gears with the transmission on the bench before installing it back into the harvester chassis. Common failure symptoms specific to this assembly include: difficulty engaging 2nd gear (indicating a bent shifter fork), transmission popping out of gear when harvesting on inclines (worn engagement collar detent springs), and grinding noise when shifting between forward speed ranges (shift rail misalignment from improper case reassembly).

The 1E6B30-26652 shifter assembly is a direct fit for Yanmar AW82 and AW85 combine harvesters, as well as YM series harvesters that share the same transmission platform architecture. Always verify your harvester model number and transmission serial tag before ordering to ensure correct fitment. For other Yanmar drivetrain components or harvester parts, contact our sales team with your OEM part numbers. For official specifications and service manuals, visit the Yanmar Agricultural Machinery Official Website.

Technical Specifications

• OEM Part Number: 1E6B30-26652
• Part Name: Shifter Assembly (CHANGE)
• Compatible Models: Yanmar AW82, AW85, YM Series Harvesters
• Assembly Includes: Shifter Fork, Shift Rail, Engagement Collar
• Transmission Type: Manual Gear Change
• Fork Pad Material: Hardened Steel with Anti-Wear Coating

Compatible Models

Each shifter assembly is inspected for fork alignment and shift rail straightness before shipment, packed in protective foam and corrugated carton, and ships within 1-2 business days. We offer a 12-month warranty against manufacturing defects. For bulk orders or other Yanmar harvester spare parts, contact our team with your OEM numbers. Browse our Forklift Mechanic Transmission section for related transmission components.