OEM Technologies 90028 Pressure Washer Pump User Manual
Installation Instructions
- Turn off the engine of your pressure washer and disconnect the spark plug to prevent accidental starts.
- Remove the existing pump from your pressure washer by unscrewing the bolts that attach it to the engine. If your old pump is stuck due to galvanic reaction, you may need to apply a penetrating oil to assist with removal.
- Prepare the new pump by applying anti-seize lubricant to the entire shaft and square key to prevent future galvanic reaction.
- Align the keyway on the new pump with the key on the engine shaft and slide the pump onto the shaft.
- Secure the new pump to the engine using the provided bolts and tighten them firmly.
- Reconnect the high-pressure hose to the threaded M22 connection on the pump.
- Connect the garden hose to the water inlet of the pump.
- Reconnect the spark plug.
Operation Instructions
- Ensure all connections are secure before starting the engine.
- Turn on the water supply to the pump.
- Start the engine of your pressure washer according to the manufacturer's instructions.
- Begin your pressure washing tasks, adjusting the nozzle as needed for the appropriate pressure.
Troubleshooting Tips
- No Pressure: Check that the water supply is turned on and that there are no kinks in the hoses. Ensure the unloader valve is properly adjusted.
- Pump Leaks: Tighten any loose fittings and replace worn or damaged seals.
- Overheating: Do not run the pump in bypass mode for extended periods. The Thermal Relief Valve (TRV) should release hot water to prevent overheating.
- Unusual Noise: Ensure the pump is properly mounted and that there is no cavitation due to restricted water supply.
Frequently Asked Questions (FAQs)
What is the maximum pressure and flow rate of this pump?
The maximum pressure is 3300 PSI and the flow rate is 2.4 GPM.
What is the shaft diameter of this pump?
The shaft diameter is 3/4 inches.
Do I need to change the oil in this pump?
No, this pump features a maintenance-free crankcase, so you never have to change the oil.
Is this pump compatible with my pressure washer?
This pump is compatible with many gas pressure washers with horizontal engines. Match engine orientation, PSI, GPM, shaft diameter, and current pump inlet and outlet connections to ensure compatibility.
How do I install the pump?
Installation is straightforward: align the pump to the engine shaft, secure with bolts, and connect the hoses. Detailed instructions are provided in the Installation Instructions section above.
What is included in the kit?
The kit includes the pump, hardware for installation, and a siphon tube.
Can I use my existing pressure washer hoses with this pump?
Yes, it features a standard garden hose inlet and threaded M22 connection high-pressure hose outlet, compatible with many pressure washer hoses.
How can I prevent the pump from overheating?
The pump is equipped with a Thermal Relief Valve (TRV) that releases hot water when the pump is in bypass mode, preventing overheating.
FAQ [continued]
**Product FAQ****1. What is the maximum pressure and flow rate of the OEM Technologies 90028 Horizontal Axial Cam Replacement Pressure Washer Pump Kit?**
- The pump can support up to 3300 PSI at a flow rate of 2.4 GPM.
**2. What type of power source does this pump require?**
- This pump is designed for gas-powered machines.
**3. What are the dimensions and weight of the pump?**
- The product dimensions are 7.5"L x 5"W x 8.5"H, and it weighs 6 pounds.
**4. What is the material used in manufacturing this pump?**
- The pump is made from fully anodized die-cast aluminum for protection against corrosion.
**5. Does this pump require an oil change?**
- No, this pump features a maintenance-free crankcase, eliminating the need for oil changes.
**6. How does the Thermal Relief Valve (TRV) contribute to the durability of the pump?**
- The TRV protects the pump from overheating while in bypass mode by releasing hot water and intaking cooler water, extending the life of the pump.
**7. What are the standard connections on this replacement pump?**
- The pump features a garden hose inlet and threaded M22 connection high-pressure hose outlet, compatible with various pressure washer hoses.
**8. Is this pump compatible with specific pressure washer models?**
- The SAE standard bolt pattern fits many gas pressure washers with horizontal engines; ensure compatibility by matching engine orientation, PSI, GPM, engine shaft diameter, and current pump inlet/outlet connection.
**9. How easy is it to install this replacement pump?**
- Customers have reported that installation is quick and straightforward, taking around 10 minutes for a simple remove and replace process.
**10. Does this replacement pump come with all necessary hardware for installation?**
- Yes, the kit includes hardware and a siphon tube for easy installation on compatible pressure washers.
Please note that these FAQs are based on product information and customer reviews available at the time of writing and may be subject to updates or changes by the manufacturer.
 User Manual (PDF) |
Specifications
| Brand | SIMPSON |
| Manufacturer | simpson |
| Model Number | 90028 |
| Category | Garden & Outdoor > Patio, Lawn & Garden > Outdoor Power Tools > Replacement Parts & Accessories > Pressure Washer Parts & Accessories > Pumps |
| Color | Silver |
| Material | Silver Aluminum |
| Style | Horizontal |
| Product Dimensions | 7.5"L x 5"W x 8.5"H |
| Power Source | Gas Powered |
| Item Weight | 6 Pounds |
| Maximum Flow Rate | 2.4 Gallons Per Minute |
| Maximum Lifting Height | 22 Meters |
| Global Trade Identification Number | 00879399001482 |
| Material Type | Silver Aluminum |
| Style Name | Horizontal |
| Item Dimensions L x W x H | 7.5"L x 5"W x 8.5"H |
| Customer Reviews | 4.6 4.6 out of 5 stars 1,365 ratings 4.6 out of 5 stars |
| Best Sellers Rank | #22,770 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #4 in Pressure Washer Pumps #118 in Pressure Washer Accessories |
| UPC | 879399001482 |
| ASIN | B00TQLMNK4 |
| Brand Name | SIMPSON |
| Flow Rate | 2.4 Gallons Per Minute |
| Weight | 6 Pounds |
| Dimensions | 7.5"L x 5"W x 8.5"H |
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