Dolly Kit for CAT 33628 Seal Packing Kit – OEM Replacement Part
Part Number: 7438
Category: Pressure Washer Parts → Pump Parts → Seal Kits
Type: CAT Pumps 33628 Seal Packing Kit
The Dolly Kit for CAT 33628 Seal Packing Kit (Part #7438) is a genuine OEM replacement seal packing kit designed to restore sealing performance and maintain reliable operation in compatible CAT Pumps triplex plunger pumps. This kit includes 20mm seal packing components (4x3 pieces) required for servicing worn seals, preventing leaks, maintaining operating pressure, and extending pump service life.
Key Features & Benefits
- Genuine CAT Pumps OEM replacement kit
- Includes 20mm seal packing components
- Kit contains seal packing components (4x3 pieces)
- Helps restore pump sealing performance
- Reduces internal and external leakage
- Maintains operating pressure and flow
- Supports efficient pump operation
- OEM-quality materials and construction
- Ideal for preventative maintenance and rebuilds
- Direct replacement design
- Helps extend pump service life
- Manufactured to original equipment specifications
Technical Specifications
Part Number: 7438
Manufacturer: CAT Pumps
Manufacturer Model Number: 33628
Product Description: Kit Dolly C10 Seal Packing Ø20 (4x3 pc)
Product Type: Seal Packing Kit
Seal Size: 20mm
Kit Contents: Seal Packing Components (4x3 Pieces)
OEM Replacement: Yes
Application: Pump Seal Maintenance and Repair
Compatible Equipment: CAT Pumps Triplex Plunger Pumps (verify model compatibility before ordering)
Common Applications
- CAT pressure washer pumps
- Triplex plunger pumps
- Commercial pressure washing equipment
- Industrial cleaning systems
- Agricultural spraying equipment
- Fleet washing systems
- Water transfer equipment
- Wash-down systems
- Pump rebuild and maintenance services
Performance Benefits
- Restores proper sealing performance
- Helps maintain pump pressure output
- Reduces water bypass and leakage
- Supports efficient pump operation
- Improves pump reliability and longevity
- Helps prevent premature pump wear
- Maintains consistent cleaning performance
- Extends pump service life
Signs Seal Packings May Need Replacement
Replace the packing seals if you notice:
- Water leaking from the pump
- Reduced operating pressure
- Loss of pump efficiency
- Internal water bypass
- Excessive packing wear
- Visible seal damage
- Inconsistent pressure output
- Increased maintenance requirements
Installation Notes
- Shut down equipment and relieve all system pressure.
- Disconnect power and water supply.
- Disassemble the pump according to CAT Pumps service procedures.
- Remove worn packing seals and inspect plungers for wear or damage.
- Clean seal cavities thoroughly.
- Install new OEM seal packing components from the kit.
- Reassemble the pump according to manufacturer specifications.
- Test operation and verify proper pressure and leak-free performance.
Important: Always consult the CAT Pumps service manual and verify compatibility with your specific pump model before installation.
Maintenance Recommendations
- Inspect seal packings during routine pump maintenance.
- Replace worn seals promptly.
- Maintain clean water filtration systems.
- Inspect plungers for scoring or wear during service.
- Follow manufacturer-recommended maintenance intervals.
- Monitor pump performance regularly for early signs of seal wear.
