Comet 5026.0116.00 Rebuild Kit with Check Valves, Diaphragm & O-Rings – OEM Replacement Part
Part Number: 3989
Category: Agricultural Pump Parts → Repair Kits → Comet Pump Repair Kits
Type: Comet 5026.0116.00 MC25 Rebuild Kit
The Comet 5026.0116.00 MC25 Rebuild Kit (Part #3989) is a genuine OEM repair kit designed to restore the performance, pressure output, and reliability of compatible Comet MC25 diaphragm pumps. This comprehensive rebuild kit includes replacement check valves, diaphragms, O-rings, and a pulsation dampener diaphragm, providing the critical wear components needed for a complete pump overhaul.
Key Features & Benefits
- Genuine Comet Pumps OEM replacement rebuild kit
- Designed for compatible Comet MC25 diaphragm pumps
- Includes valves, diaphragms, O-rings, and pulsation dampener diaphragm
- Complete pump rebuild solution
- Restores flow and pressure performance
- Helps eliminate internal and external leaks
- Maintains pump efficiency and reliability
- OEM-quality components and materials
- Excellent chemical resistance
- Reduces equipment downtime
- Extends pump service life
- Ideal for preventative maintenance and repairs
Technical Specifications
Part Number: 3989
Manufacturer: Comet Pumps
Manufacturer Part Number: 5026.0116.00
Pump Compatibility: Comet MC25 Diaphragm Pumps
Product Type: Pump Rebuild Kit
OEM Replacement: Yes
Kit Contents
- Check Valves
- Pump Diaphragms
- O-Rings
- Pulsation Dampener Diaphragm
This kit contains the major wear components commonly replaced during a complete MC25 pump rebuild.
Common Applications
- Agricultural sprayers
- Fertilizer application systems
- Herbicide spraying equipment
- Pesticide application systems
- Turf management equipment
- Orchard spraying systems
- Vineyard spray equipment
- Chemical transfer systems
- Commercial spraying operations
- Pump maintenance and rebuild services
Performance Benefits
- Restores original pump performance
- Maintains proper operating pressure
- Improves flow consistency
- Reduces internal leakage
- Enhances pump efficiency
- Improves reliability and service life
- Reduces unexpected breakdowns
- Supports consistent spraying performance
Signs Your MC25 Pump Needs Rebuilding
Replace worn diaphragms, valves, and seals if you notice:
- Reduced pressure output
- Lower flow rates
- Pulsating or inconsistent operation
- Internal bypass issues
- Fluid leakage
- Difficulty maintaining system pressure
- Excessive wear during inspection
- Reduced spraying effectiveness
Importance of the Pulsation Dampener Diaphragm
The included pulsation dampener diaphragm helps:
- Reduce pressure fluctuations
- Smooth pump output
- Improve spraying consistency
- Protect plumbing components
- Enhance overall system performance
- Reduce vibration throughout the spray system
Installation Notes
- Disconnect power and relieve system pressure before servicing.
- Flush and drain the pump thoroughly.
- Disassemble the pump according to Comet service procedures.
- Remove worn diaphragms, valves, O-rings, and dampener diaphragm.
- Inspect internal pump components for wear or damage.
- Install all new components included in the rebuild kit.
- Reassemble according to manufacturer specifications.
- Test for proper pressure, flow, and leak-free operation.
Important: Replacing all wear components at the same time helps maximize pump performance, reliability, and service life.
Maintenance Recommendations
- Flush the pump after chemical use.
- Inspect diaphragms and valves regularly.
- Monitor pressure and flow output.
- Check pulsation dampener performance during service intervals.
- Replace worn seals promptly.
- Follow Comet Pumps recommended maintenance schedules.
