Hydraulic flow recalibration · Tier 4 Final emissions audits · undercarriage rebuild windows tied to operating hours — documented for EPC reliability leads and quarry fleet managers running Sunward excavators.
Choose the inclusion band that matches mass earthworks, quarry loading, urban trenching or long-reach corridor work. Documentation packs ship with every contracted visit, including hydraulic system pressure logs, ISO 4406 cleanliness samples and undercarriage wear measurements keyed to hour meters rather than calendar months alone. Procurement teams can paste the tier matrix into bid responses without rewriting OEM language.
| Tier | Inclusion | Hydraulic / Undercarriage Audit | Documentation |
|---|---|---|---|
| T1 Mass Earthworks | 24/7 dispatch · travel-motor warranty | Quarterly slew-bearing & track-tension checks | ISO 9001 audit pack + Tier 4 NOx log |
| T2 Quarry Loading | Scheduled bucket & tip rebuilds | Monthly hydraulic cleanliness sampling | Breakout-force trend chart |
| T3 Urban Utilities | Zero-tail-swing geometry checks | Auxiliary circuit pressure verification | Municipal bid emissions packet |
| T4 Long-Reach Corridor | Annual boom pin NDT | Pilot pressure & counterweight audit | Lift-assist method statement pack |
The sequence below is how Sunward field engineers convert hour-meter exports into a signed reliability pack your engineer of record can file with the client.
Bank cubic meters, average digging depth and attachment mix are written into the service contract so spare kits match real excavator duty instead of generic PM calendars copied from unrelated machine classes.
DPF and SCR samples under load follow the ISO 8178 C1 cycle and are submitted to the project EHS officer with DEF consumption trends that survive municipal bid audits.
Main-pump flow and pilot pressure are brought back to OEM tolerance; ISO 4406 particle counts are logged before the excavator returns to the cut so breaker duty cannot starve travel motors.
MTBF, MTTR and undercarriage wear rates are signed by the Sunward reliability lead and filed with the contractor’s engineer of record after every contracted service window.
Share your fleet hour meters and attachment mix — we will map a tiered support plan sized for Sunward excavators, not generic yellow iron.