The hydraulic system is the core of your PowrTwin 5500’s power delivery, converting engine or motor power into the hydraulic pressure needed to drive the fluid pump, pressurize coating, and deliver consistent spray performance. This page gathers all genuine hydraulic‑system parts so you can maintain, repair, or rebuild your 5500 hydraulic drive with confidence and precision.

Key Hydraulic System Parts for PowrTwin 5500

Here are the main genuine components listed under the Hydraulic System category:

Hydraulic Pump – part 449‑502 — the main hydraulic pump that pressurizes hydraulic fluid to drive the sprayer’s fluid pump.
Inlet / Return / Pressure Hoses & Hose Assemblies – parts such as 448‑213 (return hose assembly), 448‑235 (pressure hose assembly) — hoses that carry hydraulic fluid into, through, and out of the hydraulic system.
Tank & Tank Components (Tank, Cover, Gasket) – parts 449‑602 (hydraulic tank), 449‑604 (tank cover), 449‑605 (tank gasket) — the reservoir that holds hydraulic fluid, plus associated cover and gasket for sealing.
Inlet Screen / Filter – part 448‑208 (inlet screen, 100‑mesh) and hydraulic filter 449‑610 — filters and screens to keep contaminants out of the hydraulic fluid, safeguarding pump and motor components.
Pressure Control / Adjustment Knob – part 448‑243 — allows adjustment of hydraulic pressure for proper fluid pump operation.
Hose Clamp & Connectors – parts 449‑126 (hose clamp), 431‑042 (tube connector), various elbows/fittings (e.g., 192‑228 elbow, 472‑500 street elbow, 192‑050 elbow) — for secure, leak‑free connections in the hydraulic fluid paths.
Miscellaneous hardware & sealing components — screws, washers, O‑rings, plugs: e.g., 858‑621 and 858‑624 screws, 859‑001 washers, 325‑031 O‑ring, 227‑027 plug, plus bolts, lock washers, nuts as listed in the parts list — these ensure all hydraulic components are properly sealed and secured.
Pressure Valve / Ball Valve – part 941‑555 (ball valve used in hydraulic path/output control) — for controlling fluid flow or for maintenance shutdowns.

These parts collectively make up the hydraulic fluid‑power system that drives the fluid pump, enabling the sprayer to pressurize paint or coating and deliver consistent spray performance under pressure.

Why Proper Hydraulic System Parts Matter

Reliable pressure generation & fluid power — The hydraulic pump and correct fluid paths ensure sufficient hydraulic pressure to drive the fluid pump and maintain consistent coating flow. Without a properly functioning hydraulic system, spray performance or pressure will suffer.
Protection from contamination and wear — Inlet screens, filters, and sealed tank assembly keep debris out of the hydraulic system, prolonging pump life and preventing premature wear or damage.
Secure, leak‑free performance — Proper hoses, clamps, fittings, and sealing hardware ensure hydraulic fluid stays contained under high pressure, preventing leaks, pressure drops, or dangerous failure.
Consistent and adjustable operation — Components like the pressure control knob allow fine‑tuning of hydraulic pressure to match job requirements, coating viscosity, or gun setups.
Ease of maintenance and dependable rebuilds — Having all OEM hydraulic parts available helps you rebuild or service the system reliably, reducing downtime, avoiding mismatched aftermarket parts, and maintaining performance far into the sprayer’s life.

FAQs

1. What parts are included in the hydraulic system listing for the 5500?

The hydraulic system includes the hydraulic pump (449‑502), hydraulic tank & tank cover & gasket, hoses and hose assemblies (return hose 448‑213, pressure hose 448‑235), inlet screen (448‑208) and hydraulic filter (449‑610), fittings and connectors (hoses clamp 449‑126, tube connector 431‑042, elbows/fittings), pressure control knob (448‑243), ball valve (941‑555), plus all necessary screws, washers, O‑rings, plugs and sealing hardware.

2. Why is the hydraulic tank important?

The hydraulic tank stores the hydraulic fluid required for the system. A properly sealed tank with a correct gasket and cover ensures fluid stays clean and uncontaminated, which helps maintain hydraulic pressure and extends pump and motor life.

3. What should I inspect if the sprayer loses pressure or hydraulic power?

Check hoses and fittings for leaks or damage, inspect the inlet screen or filter for clogging, verify the hydraulic pump integrity, and examine seals such as O‑rings or gaskets. Any leak or damaged part in the hydraulic fluid path can cause a pressure drop or failure.

4. How often should I service or replace hydraulic filters and components?

Inspect filters (inlet screen and hydraulic filter) regularly, especially after heavy use or in dirty environments. Replace filters or seals whenever you notice debris, contamination, or any fluid delivery issues. Also, check hoses and clamps periodically for wear, leaks, or damage.