XCMG Spare Parts DRIVING-CYLINDER OF DISTRIBUTION VALVE 155301050

The XCMG part number 155301050 refers to the driving cylinder used specifically within the distribution valve assembly on mid-to-large wheel loaders. This is a direct-action control component, not a generic hydraulic ram—it shifts the valve spool to direct oil flow toward the bucket or boom functions.

Constructed from medium-carbon steel with a hard-chrome plated rod, the cylinder body carries a black oxide finish to resist corrosion in dusty or damp job sites. The sealing package uses polyurethane wipers and O-rings rated for -20°C to +90°C operating temperatures, compatible with standard HM46 hydraulic fluids.

This cylinder features a compact single-acting spring-return design, with a 50mm bore and a 30mm stroke. The mounting ends are machined with a clevis pin hole on the rod eye and a threaded port (M18x1.5) on the cap end, matching the original XCMG distribution valve casting.

Wear items to check regularly include the rod seal and the guide bushing—both available as service kits. If you notice sluggish attachment response or external weeping around the rod, this cylinder is often the first culprit before the valve itself.

Genuine XCMG packaging includes the part number label and a desiccant bag inside the sealed plastic wrap. Always confirm your valve body code (stamped near the inlet port) matches revision B or later, as earlier housings used a different clevis spacing.