Graco 287552 Pump Cylinder Repair Kit

The Graco 287552 Pump Cylinder Repair Kit is a genuine Graco service kit designed to restore performance and sealing of the fluid section on larger airless sprayers.

Part Number: 287552
Fits: Ultra Max II 1095, GMAX II 5900
Function: Repairs cylinder seals and packings
Use: Solves pressure loss, leakage, and rough pumping
Quality: OEM Graco replacement for reliable performance

Retail Price: $612

You save: $164.02 (26.80%)

Our Price: $447.98

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Description

Graco 287552 Pump Cylinder Repair Kit — Overview

Compatible Machines

The Graco 287552 Pump Cylinder Repair Kit is used to service the fluid section (pump cylinder area) on the following sprayers and variants:

Ultra Max II 1095 (Hi-Boy / Lo-Boy; Standard & earlier ProContractor variants)
GMAX II 5900 (Hi-Boy / Lo-Boy; Premium / Contractor variants)

What this Kit Does

Restores sealing in the pump cylinder to recover/maintain operating pressure and smooth reciprocation.
Replaces worn packings, seals, and O-rings in the cylinder/fluid section interface.
Helps reduce leaks, pressure drop, pulsation, and premature wear when installed correctly.

Key Features

Genuine Graco service kit for consistent performance and fit.
Supports high-output airless performance on Ultra Max II 1095 and GMAX II 5900.
Intended for routine preventive maintenance or cylinder repair after wear.

Specifications

Part Number	287552
Item Type	Pump Cylinder Repair Kit (fluid section service)
Primary Fit	Ultra Max II 1095; GMAX II 5900
Typical Pump Association	Often used with pump model 287513 (verify your pump series)
Typical Contents*	Selected packings, seals, and O-rings for the cylinder area
Use Case	Pressure loss, leakage at cylinder, rough stroke, or scheduled overhaul

Compatibility Notes

Confirm your exact sprayer model, configuration (Hi-Boy/Lo-Boy), and pump series before ordering.
If your cylinder bore is scored or damaged, this kit may not resolve issues; consider cylinder or complete fluid section replacement.
For models outside Ultra Max II 1095 and GMAX II 5900, consult the parts manual or contact support with your serial number.

Installation & Maintenance Tips

Depressurize the sprayer and follow Graco safety procedures.
Thoroughly clean the fluid section; remove old debris/paint before reassembly.
Inspect piston/cylinder surfaces for scoring; replace worn hardware as needed.
Lube packings lightly per Graco guidance during assembly.
Pressure test with water/mineral spirits and check for leaks and smooth operation.

Frequently Asked Questions

No. It is associated with the Ultra Max II 1095 family. Verify your exact model and pump series (e.g., 287513). Other sizes (e.g., 695/795/1595) use different cylinder or packing kits.

Often, yes—worn packings/seals can cause poor sealing and pressure drop. If the cylinder is scored or the piston/ball seats are damaged, additional parts may be required.

Basic hand tools typically suffice. Follow the Graco service manual for your pump series for torque specs, orientation, and safe depressurization steps.

Match your unit’s exact model designation (e.g., Ultra Max II 1095 or GMAX II 5900) and the pump model/series stamped on the pump or listed in the parts manual. If in doubt, share the serial number with support.

Keep the sprayer flushed and filtered, avoid running dry, store with appropriate pump protectant, and replace worn filters/balls/seats as needed to prevent scoring and bypass.