Graco 290 PC Lo‑Boy Pump (17C487) – Complete Parts & Maintenance Guide
The Graco 290 PC Lo‑Boy, a compact yet sturdy electric airless sprayer, relies heavily on its fluid section for reliable performance. Model 17C487 (Endurance Chromex piston pump) serves as the graco replacement pump offering enhanced longevity, quick-change convenience, and OEM-grade durability. This page provides an in-depth overview of the pump assembly, paint sprayer parts, and best practices to keep your unit spraying smoothly.
Why the 17C487 Endurance Pump Matters
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Engineered for Longevity: Featuring Chromex-coated piston rods, hardened stainless steel cylinders, and V‑Max Blue packings, this OEM pump lasts up to twice as long as many aftermarket ends—rated at 3,300 psi.
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ProConnect Quick-Swap Design: Enables tool‑free replacement in minutes—just loosen a few bolts and it slides right in.
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Wide Compatibility: Swaps seamlessly with 390/395/490/495/595 PC units and select FinishPro II models from 2014 onward.
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OEM Reliability: Manufactured to Graco specs, ensures perfect fit, robust fluid seals, and full warranty coverage.
What You’re Getting with 17C487
The pump kit includes:
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Rotor/Piston Assembly: Chromex-coated rod in a hardened cylinder for smooth fluid movement.
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Valve Assemblies & Springs: Stainless and carbides for wear resistance.
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Seal Packs: Guaranteed high-pressure service with OEM-quality packings.
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ProConnect Lower Housing: Pre-assembled fluid section for fast exchange.
Optional rebuild kits are available: piston (24W617), packing/valve packs (18B260), inlet valve cartridges (246429), and poppet sets (239937)
Maintenance & DIY Rebuild Tips
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Pump Swapping
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Safely depressurize the system.
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Remove fluid hoses and old pump.
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Install new 17C487 pump, tighten bolts, reconnect hoses. Minutes later, you can spray again—no pump rebuilding needed! Seal Refresh
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Consider replacing graco pump repair kits like the 18B260 packing set annually or after 1,000 gallons for sustained performance
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Rebuild vs. Replace
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Rebuild kits (seals, valves, springs) cost less but need meticulous assembly.
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ProConnect graco replacement pump is ideal for fast pump swaps and minimal downtime.
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Flush & Seal Care
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Clean after each use, using warm water or solvent.
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Apply Throat Seal Liquid (TSL) to prolong seals.
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Related Paint Sprayer Parts & Accessories
To ensure full readiness, keep these spares on-hand:
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Inlet filters & suction tube: keeps contaminants out.
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Hoses, fittings, and couplers: BlueMax II hoses rated at 3,300 psi.
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Gun kits: Spare graco airless spray gun options; Contractor PC or SG2.
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Spray tips & guards: Compatible with graco magnum x5 parts and RAC X tips.
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TSL, pump armor fluid, and accessory kits: Help prevent pump seal failure.
Stocking these graco sprayer parts minimizes unexpected on-site delays.
Compatibility & Accessory Ecosystem
The 17C487 pump plugs into a wide ecosystem:
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Works across Lo-Boy Hi-Boy and cart-mounted units (390–595 PC), corresponding graco airless spray guns models, and partner accessories
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Pair it with graco magnum x5 parts for RAC X guard swaps and hose kit continuity.
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Streams well with graco airless sprayer accessories, maintaining a singular parts flow across a mixed fleet.
This level of interchangeability simplifies fleet management and parts logistics.
When to Replace or Repair Your Pump
Replacing pump makes sense when observing:
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Persistent pressure loss despite cleaning
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Fluid leaks or frothing
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Noisy operation or gear chatter
Order a graco replacement pump for fast, reliable results—often faster than searching graco pump repair kits.
Repair kits are effective for minor seepage or gradual performance decline, especially when partnering with professional or home mechanics familiar with pump assembly.
For shop service, search graco pump repair near me—many local dealers or cycle shops offer rebuild/replacement options for ProConnect models.
Boosted Uptime & Operational Efficiency
Use of ProConnect pumps keeps downtime minimal, while rebuildable kits give budget-conscious options. Also, authentic replacements safeguard component life and support resale value.
Pair this setup with high-quality graco airless spray guns, RAC X accessories, hoses, and filter kits—creating a fleet-ready system resistant to stress, cost-effective over time.
Quick Specs Summary: 17C487 Pump
| Feature | Specification |
|---|---|
| Pressure Rating | 3,300 psi |
| Compatibility | 390/395/490/495/595 PC & FinishPro II |
| Packing Style | V‑Max Blue endurance |
| Material Finish | Chromex rod, hardened SS cylinder |
| Replacement Cycle | Pump: ~2 yrs / ~1,000 gal; seals: yearly |
| Swap Method | ProConnect (Tool‑free) |
| OEM Kits | 18B260 packing, 246429 inlet valve |
These specs keep the unit performing like new, even after repeated jobs.
Final Thoughts
The 17C487 Endurance Chromex pump is your go-to graco replacement pump for the 290 PC Lo‑Boy. Its durability, plug-and-play ProConnect design, and shared ecosystem make it ideal for contractors, rental fleets, and field repairs. Ensure quality performance by using genuine factory rebuild packs and stocking paint sprayer parts and graco pump repair kits on-hand.
For professional rebuild support, search graco pump repair near me, and keep a spare OEM pump ready to go. With genuine components, rapid replacement, and full compatibility with graco airless spray guns and accessories, your sprayer setup will stay productive day after day.