This item for axle housing gearbox left side , used with drive shaft
Mechanical Buffalo (MB). This parts is parts for gearbox.
Dimension : 14.4" x 24.2" x 3.4"
Weight        : 7 kg
 
For the left-side axle housing gearbox of a Mechanical Buffalo (MB) engine starter, likely a single-cylinder engine (e.g., Kubota EA300 or similar, 7–12 HP) used in agricultural applications, this component mirrors the right-side axle housing gearbox described previously. It encases and supports the left axle shaft and part of the differential or gear system that transmits power from the engine (via the Bando A19 belt) to the left wheel. The left-side housing works in tandem with the right-side housing to deliver torque, typically through a live axle or simple transaxle setup common in mechanical buffalos.
 
Left-Side Axle Housing Gearbox Overview
Function: The left-side axle housing protects the left axle shaft, its bearings, and a portion of the differential or gearbox gears, ensuring power transfer to the left wheel while supporting the vehicle’s weight and handling terrain stresses.
 
Components:
Axle Housing: A cast iron or steel casing that encloses the left axle shaft, bearings, and gears, shielding them from dirt, water, and debris.
Left Axle Shaft: A solid rod (half-shaft) connecting the differential/gearbox to the left wheel, typically with splines or a keyway to engage the hub.
Differential/Gearbox: Likely a simple bevel or spur gear differential (or a single-speed gearbox in budget models) that splits torque between the left and right wheels. In some mechanical buffalos, there’s no true differential, relying on wheel slip for turns.
Bearings: Deep groove ball or tapered roller bearings support the axle shaft, reducing friction and wear.
 
Design Notes:
Symmetry with Right Side: The left-side housing is often a mirror image of the right-side housing, but the axle shaft length may differ if the gearbox is offset (e.g., in a transaxle design). Check if the left shaft is shorter or longer than the right.
Semi-Floating vs. Full-Floating: Mechanical buffalos typically use semi-floating axles (the shaft bears the vehicle’s weight), but some heavier models may use full-floating designs (housing bears the weight) for durability.
Connection to Engine: Power reaches the gearbox via the Bando A19 belt (as noted in your earlier query), likely through a pulley or chain drive converting vertical engine output to horizontal axle rotation.
 
Specific Considerations
Compatibility: The left-side axle housing must match the engine’s gearbox/differential design and the right-side housing for balanced operation. Verify the axle shaft diameter (typically 3/4" to 1"), spline count, and mounting bolt pattern (e.g., 2–3.25" spacing).
 
Common Issues:
Wear: Grinding noises, vibration, or juddering suggest worn gears, bearings, or a damaged shaft.
Leaks: Failed seals can cause gear oil loss, leading to overheating or gear failure.
Alignment: Misalignment with the belt-driven pulley (A19) can stress the left-side housing or gears.
Relation to Right Side: If replacing both left and right axle housings (as you’ve asked about both), ensure they’re from the same manufacturer or compatible series to maintain gear mesh and axle alignment. Replacing only one side is possible if the damage is isolated, but inspect the differential gears for wear.
 
Sourcing a Left-Side Axle Housing Gearbox
OEM Parts:
Contact the engine or vehicle manufacturer (e.g., Kubota, Yanmar, or the MB brand) for OEM parts. For example, Kubota dealers like Messicks or TractorJoe may stock axle housings for engines like the EA300.