Graco 17M873 Pump repair kit
The Graco 17M873 Pump Repair Kit helps restore full spray pressure and efficiency by replacing worn pump packings and seals. Ideal for regular maintenance or fixing leaks and priming issues.
- OEM repair kit for select Graco sprayers
- Includes seals, packings, glands, and seats
- Fits Ultra Max II, FinishPro, LineLazer, GMAX & FieldLazer models
- Ensures consistent performance up to 3300 PSI
Key Compatibility & Uses for the Graco 17M873 Pump Repair Kit
Compatible Machines
Use the Graco 17M873 Pump Repair Kit to restore pump performance on the following sprayers and stripers:
- Graco FieldLazer S100 (Series B displacement pump)
- Graco FieldLazer S200
- Graco LineLazer 3400
- Graco 390 (select variants)
- Graco Ultra 395
- Graco Ultra Max II 490
- Graco Ultra Max II 495
- Graco Ultra Max II 595
- Graco FinishPro 395
- Graco FinishPro II 395
- Graco FinishPro II 595
- Graco GMAX 3400 (Standard Series)
Tip: Always verify your sprayer’s model/series and pump code before ordering to ensure exact fit.
What the 17M873 Kit Does
The Graco 17M873 Pump Repair Kit contains the packings and wear components required to rebuild the displacement pump section. Replacing these items helps resolve low pressure, priming issues, pulsation, and paint leakage caused by worn packings or seats—extending the life of your existing pump assembly.
Kit Highlights
| Part Number | 17M873 — Kit, Repair, Pump |
|---|---|
| Typical Contents | Upper/lower packings, glands, O-rings, checks (balls/seats), seals and related hardware for the displacement pump (contents may vary by production run). |
| When to Use | Loss of pressure, frequent priming loss, leaking from pump throat, rough spray pattern, or scheduled pump maintenance. |
| Pressure Guidance | Many compatible units operate up to 3300 psi. Always follow the rating and instructions for your specific model. |
| Install Skill Level | Intermediate: requires basic hand tools and adherence to Graco service procedures (cleanliness and inspection of piston rod/cylinder are critical). |
Why Choose the Graco 17M873 Kit
- Restore Performance: Recover prime, pressure, and spray consistency.
- Reduce Downtime: Faster than replacing the entire pump assembly.
- Cost-Effective: Replace wear items instead of the full lower.
- OEM Fit: Designed to meet Graco specifications for compatible models.
Installation & Care (Summary)
- Relieve pressure; disconnect power and material supply.
- Remove the pump lower per your model’s service manual.
- Disassemble on a clean surface; inspect piston rod and cylinder for scoring or wear.
- Install new packings/seats in the correct orientation; lubricate as specified by Graco.
- Reassemble, test for leaks, and verify pressure/prime.
If the rod or cylinder is heavily worn, a complete pump lower may be required.
Frequently Asked Questions
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