Precision Retainer for Pump Linkage — Graco 176817 Retaining Spring
The Graco 176817 Retaining Spring secures the linkage/pin in the fluid section of select Graco airless paint sprayers. It prevents pin walk-out and keeps the yoke/rod connection tight for consistent pump motion and smooth spraying.
Compatible Machines
- UltraMax II 695 (Lo-Boy)
- UltraMax II 695 (Hi-Boy)
- UltraMax II 795 (Hi-Boy)
Tip: If your sprayer is a ProContractor/Standard/Lo-Boy or Hi-Boy variant of the models above, this spring typically applies. Always match by part number (176817) and your unit’s parts diagram.
What It Does
This compact retaining spring holds the pivot pin in place at the pump linkage (yoke/rod connection), helping maintain alignment, reduce vibration-related loosening, and extend service intervals. It’s a direct OEM Graco replacement for part 176817.
Key Benefits
- Maintains secure linkage pin retention under vibration.
- Supports consistent pump stroke and spray pattern.
- Quick, tool-light installation during routine maintenance.
- Genuine Graco 176817 fit and durability.
Specs
| Part Number | 176817 |
| Description | Retaining Spring (linkage/pin retainer) |
| Approx. Dimensions* | Height ~ 0.15 in, Length ~ 0.80 in, Width ~ 1.05 in |
| Placement | Fluid section linkage — yoke / connecting pin retention |
| Package Contents | 1 × Graco 176817 Retaining Spring |
Fitment Notes
- Use this spring where the parts diagram calls out 176817.
- Replace during pump service if the original shows fatigue or loss of tension.
- If your model isn’t listed above, share your sprayer model/part list to confirm compatibility.
Frequently Asked Questions
It retains the linkage/pivot pin that connects the pump rod and yoke, preventing the pin from backing out during operation.
Check your model’s parts diagram for part 176817. If your unit is an UltraMax II 695 (Lo-Boy/Hi-Boy) or UltraMax II 795 (Hi-Boy), this spring commonly applies. When in doubt, share your model number and serial range for confirmation.
Replace it any time the spring is bent, weakened, missing, or during pump rebuilds when the linkage is serviced to ensure reliable pin retention.
Yes — this is a genuine OEM Graco 176817 part designed to meet factory specifications.
No special tools are typically required. Use needle-nose pliers or a small pick to remove and seat the spring while ensuring the linkage pin is fully engaged.
