6222-21-2220 Cylinder Liner for Komatsu 6D108 / S6D108 Engine

6222-21-2220 Cylinder Liner Sleeve for Komatsu 6D108 / S6D108 Engine

The high-integrity 6222-21-2220 cylinder liner is a specialized industrial-grade dry sleeve manufactured to revitalize the block structural bores of Komatsu 108mm displacement diesel engines. Specially hardened to sustain structural geometry under relentless mining and quarrying cycles, this premium liner ensures perfect piston ring sealing and optimal thermal equilibrium across the combustion chambers.

Technical Specifications & Structural Dimensions

30-Ton Mining Fleet Breakdown Defenses

Heavy production miners utilizing the Komatsu PC300-5 excavator or PC300-6 excavator run their fleets through relentless heavy loading cycles that introduce extreme mechanical stress to the engine block. In these punishing 30-ton class applications, any minute distortion of the cylinder bore can trigger fatal combustion blow-by and oil dilution. Deploying the robust 6222-21-2220 cylinder sleeve re-establishes the exact geometric alignment required by the 7.15-liter Komatsu S6D108 engine block, safeguarding high-value internal assets from unscheduled breakdown downtime.

Sleeve Migration Control and Flange Alignment Physics

Unlike smaller engine platforms, the high displacement 108 series engine block demands precise interference-fit execution to prevent dry liners from migrating under heavy rotational torque. During a professional block overhaul, technicians must meticulously check for cylinder out-of-roundness before inserting the new 6222-21-2220 liner. Any localized block irregularities will cause micro-movement of the sleeve over time, leading to lower flange protrusion and crushing the combustion seal ring on the cylinder head gasket. Correct cooling assembly procedures must be applied to ensure the sleeve sets permanently flush without scuffing the critical block parent wall.

Request a Verified Fleet Quote Within 24 Hours

To secure flawless operational fitment and prevent costly parts mismatch, please supply your specific Komatsu Machine Serial Number or factory engine identity plate to our global logistics department. Our industrial engineering team will cross-verify the official parts databases to guarantee that the 6222-21-2220 repair core matches your dynamic fleet maintenance specifications completely.

FAQ

Does the 6222-21-2220 fit the later electronically controlled common rail engines?

Yes, this dry sleeve is designed to fit across the entire Komatsu 108mm bore block spectrum, including the mechanical S6D108 and the later high-pressure common rail SAA6D108E variants, since they retain the exact same base cylinder block internal bore geometry.

Is this cylinder sleeve delivered completely pre-honed?

The 6222-21-2220 sleeve is typically distributed as a semi-finished dry component. Due to the high compression stress exerted by the solid engine block walls during precision machine pressing, final micro-honing post-installation is mandatory to ensure precise factory piston clearance.