Maintain or restore peak performance of your PowrTwin 4500 sprayer with our comprehensive selection of genuine hydraulic motor parts. The hydraulic motor is the prime driving force behind the fluid pump for this machine — supplying the power, motion and reliability your job demands. Using original parts ensures precision fitment, correct pressure/flow capabilities and longer service life.

Why Choose Genuine PowrTwin 4500 Hydraulic Motor Parts?

These components are specifically engineered for the PowrTwin 4500’s hydraulic drive system, ensuring accurate fit, sealing performance, and pressure-rating compatibility.
The hydraulic motor is central to the system’s drive cycle: issues here (air ingress, worn seals, mis-alignment) directly impact spray performance, output volume and reliability.
OEM parts help avoid mismatches such as wrong seal kits, incorrect motor components or incompatible hardware — all of which can shorten service life or cause breakdown.
With heavy-duty use typical of PowrTwin units, durability, proper tolerancing and correct part matching are key to minimal downtime and consistent job results.
Our Range of Hydraulic Motor Parts

Explore the main parts listed in this sub-category:

Hydraulic Motor Seal Kit – Part # 235-050 – Seal kit for PowrTwin 4500 hydraulic motor assemblies.
Hydraulic Tube / Cylinder Assembly – Various Part Nos for motor drive – Replacement tube/cylinder components for the hydraulic motor system.
Spool Valve & Sleeve for Hydraulic Motor – Part # 441-908 (or similar) – Internal flow control components for the hydraulic motor.
Accessory Keys, O-Ring Kits, Mounting Hardware – Necessary hardware to correctly install or replace hydraulic motor components in the drive system.

How to Choose the Right Hydraulic Motor Part

Here’s how to decide which hydraulic motor component you need for your PowrTwin 4500:

Identify the symptom:

If the motor stalls at the bottom of a stroke but runs normally otherwise, the manual indicates issues such as piston seat failure or air in the hydraulic motor.
If the system has low pressure with high heat on the hydraulic motor, worn rod/seals or internal motor fault may be the cause.

Confirm your model and part number: Make sure the unit is indeed a PowrTwin 4500 and verify the exact part number of the component you intend to replace.
Decide full motor replacement vs seal kit or component:

If the motor housing is intact and only leaking, a seal kit (like # 235-050) may suffice.
If you detect internal damage, major wear, or repeated failures, a full motor assembly or major component may be needed.

Follow the correct installation & purge procedure: After installing motor parts, you must purge air from the hydraulic system to prevent erratic strokes or motor stall.
Schedule regular maintenance: Because hydraulic motors operate under high pressure and continuous load, periodic inspection of seals, mounting bolts, and motor clearances can extend service life.

FAQs

What exactly does the “Hydraulic Motor Parts” category cover for the PowrTwin 4500?

This category includes the hydraulic drive motor assembly and associated parts for the PowrTwin 4500 — such as seal kits (Part # 235-050), tubes/cylinders, spool valves, O-ring kits, coupling keys and mounting hardware.

How can I tell if my hydraulic motor needs replacement or just a seal kit?

Inspect for the following: if the machine cycles but stalls at bottom or top of stroke (without abnormal heat), the fault may be the motor. Manual lists “oil motor stalls at bottom… check oil motor” as a sign. If severe wear, internal damage, or repeated failures exist, a full motor or major component replacement is better.

Can air in the hydraulic motor cause issues on the PowrTwin 4500?

Yes. The manual specifically notes that air introduced into the hydraulic motor can cause stalling, erratic strokes or reduced performance. Proper bleed/purge of the system is essential after service.

Are aftermarket hydraulic motor parts acceptable for the PowrTwin 4500?

While aftermarket parts may be available, it is strongly recommended to use genuine parts to ensure correct fit, pressure rating, material compatibility and reliable service life. Using mismatched parts may void warranty or reduce durability.

How often should I inspect hydraulic motor parts on my PowrTwin 4500?

Maintenance intervals depend on usage, but the hydraulic drive motor should be inspected whenever performance drops (slow strokes, erratic cycles), or every major job cycle. Confirm serial/usage hours, monitor motor behaviour and replace seals or hardware proactively.

Ready to Order Hydraulic Motor Parts?

Browse our full selection of PowrTwin 4500 hydraulic motor parts above and select the exact item you need. If you’re unsure which part number fits your machine or component, contact our support team—we’ll assist you in identifying the correct part and restoring your sprayer’s drive performance.