Playing a critical role in heavy machinery travel and powertrain systems, the 421-15-00140 part number transmission group shaft ensures high torque transmission under severe field conditions. The 421-15-00140-SHAFT ASS'Y WA420 TRANSMISSION GROUP SHAFT preferred for this application is designed to stably transmit the power flow within the torque converter and transmission gear group. Other serial numbers compatible with this part include WA420-1, WA400-1, WA450-1 and WA470-1 models.
Transmission Shaft Replacement and Assembly Notes
During in-transmission overhaul operations, bearing surfaces, bushing tolerances and axial clearances of the group shafts must be checked with precision. During the assembly stage, the cleanliness of gear engagement ratios and lubrication channels are among the factors that directly affect the service life of the powertrain. Adhering to the manufacturer's torque values during removal and installation preserves mechanical integrity.
Part Verification and Technical Compatibility
During part replacements, the dimensions and number of teeth on the removed old component must match the new one exactly. Comparing the stock code without spaces in the format 4211500140 with the references in the original parts catalog prevents failures that may arise from incorrect part installation.
Before placing an order, you can compare your machine's transmission type and the 421-15-00140 code with your own parts catalog.
