MAJOR MAINTENNANCE KIT | OMAX | MAXIEM | HJ-302701
The HJ WATERJET Major Maintenance Kit (HJ-302701) is a complete intensifier rebuild solution designed for OMAX and MAXIEM waterjet systems operating at 60,000 PSI (4,100 bar).
The HJ-302701 MAXIEM Pump Major Maintenance Kit includes all critical wear components required to perform a full pump overhaul, restoring your system to like-new operating condition. It is the ideal solution for high-hour machines, major service intervals, or when performance degradation can no longer be resolved with minor maintenance kits.
OMAX / MAXIEM waterjet intensifier pumps operate under extreme pressure, rapid reciprocation, and continuous load conditions, causing gradual wear across seals, check valves, and internal components. The HJ-302701 kit addresses all major wear points, ensuring optimal sealing, pressure generation, and system efficiency. The HJ-302701 kit includes (1) 302700, (3) 301873, (1) 301353, (1) 202496, (3) 303274
The HJ-302701 MAXIEM Pump Major Maintenance Kit is used for OMAX Waterjet pumps: P2040, P3055, M3050 and M4050.
Key Benefits
- Complete Pump Restoration – Like-new performance
- Maximizes Pressure Output – Full 60K capability
- Reduces Downtime Long-Term – Fewer failures after rebuild
- Extends Equipment Life – Protects major components
- Improves Efficiency – Reduces energy loss
Applications
- High-production waterjet cutting
- Metal fabrication and CNC cutting
- Stone, tile, and glass cutting
- Aerospace manufacturing and composite cutting
- Industrial environments with heavy pump usage
Frequently Asked Questions | HJ-302701
1) What is HJ Waterjet part #HJ-302701?
It is the HJ Waterjet replacement for Omax 302701 Major Maintenance Kit for OMAX/MAXIEM pumps.
2) What pumps use HJ-302701?
It is used with several OMAX pump platforms, including P2040, P3050, P3055, M3050 and M4050 according to aftermarket OMAX parts references.
3) How often should HJ-302701 be installed?
Service guide gives major-maintenance intervals depending on the pump/model. For example, the P3050/P3055V schedule calls for the major kit at approximately 1,000 operating hours, while the P4055V schedule calls for it at 500 hours, followed by additional major-maintenance intervals.
4) What is the difference between HJ-302700 and HJ-302701?
HJ-302700 = Minor Maintenance Kit.
HJ-302701 = Major Maintenance Kit, which includes the HJ-302700 kit plus additional check-valve components and lubricant.
5) Is HJ-302701 a complete pump overhaul kit?
No. The HJ-305098 separately as the Complete/Overhaul Kit. The HJ-302701 is the major maintenance kit.
6) What are the common symptoms that indicate a major maintenance is needed?
Typical indications include pressure instability, reduced cutting performance, water leakage, excessive pump cycling, and worn check-valve/seal components. These symptoms aren''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t exclusive to the HJ-302701 components, so troubleshooting should be done before replacing the kit.
7) Can HJ-302701 be purchased as individual components?
Yes. The kit consists of individual part numbers, although purchasing the complete kit is generally more convenient when performing the scheduled major maintenance.
8) What is the difference between a major maintenance kit and an overhaul kit?
The HJ-302701 major kit addresses scheduled maintenance/wear components. The HJ-305098 overhaul kit is a more extensive service kit and includes the HJ-302700 minor kit plus three HJ-303401 check-valve assemblies.
Why Choose HJ Waterjet?
HJ Waterjet replacement parts are engineered to deliver premium-quality, reliable performance, precision fit, and long-lasting durability at a competitive price. Precision manufactured to exact specifications using high-quality materials and tight tolerances, our components are designed for compatibility with OEM waterjet systems and demanding industrial applications. By focusing on quality, precision, and value—not expensive branding—we help manufacturers reduce maintenance costs, minimize downtime, and maximize productivity without compromising performance or reliability. When precision matters, HJ Waterjet delivers the quality, reliability, and value professionals trust. Premium Performance Without the Premium Price