SEM wheel loader parts differential W043100170

Compatible Models: SEM639B and SEM650B 5-ton wheel loaders front axle differential assembly, matched with Xuzhou drive axle main reduction assembly W043100140.
Internal Structure: A complete integrated assembly consisting of a housing, 4 planetary gears, half-shaft gears, a cross shaft, and fixing bolts. Original factory-installed one-piece cast steel housing, suitable for heavy-duty earthmoving and hill-climbing conditions.

II. Installation Location and Core Functions
Installation Point: Inside the main reducer of the loader's front drive axle, the core transmission component for power input from the drive shaft and output from both half-shafts.

Core Functions:
Differential Steering: Allows for a speed difference between the left and right wheels when the vehicle turns, preventing tire drag and wear;
Balancing Torque: Automatically distributes driving force under heavy loads and on muddy roads, preventing single-wheel slippage;
Bearing Transmission: Transmits the large torque after the main reduction gear decreases, supporting the impact load of earthmoving operations.

III. Fault Diagnosis and Replacement: Abnormal noise from the rear axle during turns, gear grinding noise, worn or broken gear teeth; One wheel spinning freely, severely reduced traction, planetary gear/half-shaft gear failure; Cracked differential housing, gear oil seeping from the mating surfaces, damaged internal bearings; Worn half-shaft splines, half-shaft unable to mesh and transmit power.