Overview#
The Hipower HJW-105 is a 105 kW diesel standby generator from the HJW Industrial series, manufactured at Hipower Systems' Olathe, Kansas facility. It uses a John Deere 4045HF285 family engine — a 4.5-liter four-cylinder turbocharged diesel in the same engine family that spans the HJW-55 through HJW-130 product range — paired with a Stamford UCI 274 series alternator. The set is EPA Tier 3 certified and carries UL 2200 and CSA listings.
The HJW-105 fits between the HJW-85 and HJW-130 in the product lineup, serving commercial standby applications requiring 100-105 kW: mid-sized office buildings, grocery stores, industrial shops, and telecom facilities in the 200-250A range at 480V.
John Deere Engine Platform#
The 4045HF285 family encompasses the highest-output variants of John Deere's 4.5-liter inline four-cylinder diesel. At the 105 kW generator output level, the engine operates at a high fraction of its rated output — well within the parameters established for this platform in continuous generator-set service. The 4045 engine is among the most widely deployed small-to-mid-range diesel platforms in North America, with dealer coverage in every California county and comprehensive parts availability across the western United States.
Common service items for the 4045 engine — oil filters, fuel filters, air filter elements, and belts — are stocked by agricultural dealers, industrial distributors, and major online parts suppliers, enabling fast turnaround on preventive maintenance.
Hipower Manufacturing#
Hipower Systems assembles and tests generator sets in Olathe, Kansas, applying factory load testing and producing test certificates on each unit. The HJW series uses heavy-duty steel skid construction with anti-vibration isolators. Sound-attenuated enclosure options are available. The set is designed to meet NFPA 110 Level 1 and NFPA 99 requirements with appropriate accessories, and complies with UL 2200 and ISO 8528-5.
Service and Maintenance#
Oil and filter changes follow John Deere's 250-hour or 12-month schedule for the 4045 engine. Fuel filter replacement at 500 hours or annually keeps the injection system protected, particularly important in standby service where extended storage can allow fuel degradation. Air cleaner inspection is due at 500 hours.
The Stamford UCI 274 alternator requires periodic connection checks and insulation resistance testing every 2-3 years. Starting battery float charging is essential for reliable standby operation.
Our Service Experience#
OnPoint Generators services Hipower HJW series units throughout the San Francisco Bay Area and Northern California. The HJW-105 at 105 kW serves a wide range of NorCal commercial standby applications — from suburban medical offices to light manufacturing. The John Deere 4045 engine is well supported locally, and our technicians are familiar with the full HJW range. Contact us for maintenance programs, pre-purchase inspections, or load bank testing.
