Graco 17H864 Cylinder Sleeve
Compatible Machines
- Ultra Max II 695 ProContractor
- Ultra Max II 795 ProContractor
- GMAX II 3900 ProContractor
- Mark IV ProContractor
What is the Graco 17H864 Cylinder Sleeve?
The 17H864 Cylinder Sleeve is the precision wear sleeve inside the pump lower of select Graco piston-type airless sprayers. It guides the piston, maintains sealing, and restores like-new pumping performance when the original sleeve is worn or scored. Designed as a durable MaxLife-grade component, it helps extend service intervals and sustain consistent pressure and flow.
Key Benefits
- OEM fit for the models listed above no modifications required.
- MaxLife-level durability for demanding daily use.
- Restores sealing integrity and smooth piston travel.
- Helps maintain consistent spray pressure and finish quality.
Specifications
| Attribute | Detail |
| Part Number | 17H864 |
| Part Type | Cylinder Sleeve / Pump Sleeve (pump lower component) |
| Compatibility | Ultra Max II 695, Ultra Max II 795, GMAX II 3900, Mark IV ProContractor |
| Grade | MaxLife-level wear component |
| Use Case | Replace worn/etched sleeve to recover pressure, reduce by-pass and maintain smooth piston action |
Fitment & Installation Notes
- Confirm model variant (ProContractor) before ordering to ensure exact fit.
- Inspect piston rod and packings; replacing the sleeve is best paired with fresh packings if wear is present.
- Clean all mating surfaces and lubricate per Graco service guidance during reassembly.
Quick Tips
- If your sprayer struggles to hold pressure or you see scoring in the pump bore, the cylinder sleeve may be due for replacement.
- Use only genuine Graco parts to maintain warranty and performance.
Frequently Asked Questions
It fits the specified ProContractor configurations listed above. Always verify your exact model and series before purchase.
Difficulty holding pressure, visible scoring in the bore, erratic spray pattern, or excessive by-pass are common signs the sleeve is worn.
It’s smart to inspect and replace packings and check balls/seats if worn. A sleeve swap during a packing kit service can minimize downtime.
No MaxLife refers to Graco’s high-durability wear components. Chromex is a specific hard coating often used on rods. This part is the cylinder sleeve.
At a Glance Reference
| Model | Series | Uses Sleeve |
| Ultra Max II 695 | ProContractor | 17H864 Cylinder Sleeve |
| Ultra Max II 795 | ProContractor | 17H864 Cylinder Sleeve |
| GMAX II 3900 | ProContractor | 17H864 Cylinder Sleeve |
| Mark IV | ProContractor | 17H864 Cylinder Sleeve |
Genuine Graco OEM part 17H864. For best results, follow factory torque specs and lubrication instructions during reassembly.
