594090301 - TRANSMISSION.10/230CC.PUMP.LH

Husqvarna 594090301 Transmission (LH)

Part Details

• Part Number: 594090301

• Manufacturer: Parker Hannifin

• Model: HTE10C230F60GFCA010 (HTE Series)

• Orientation: Left Hand (LH)

• Type: Integrated Hydrostatic Transmission (Pump & Motor)

Overview

The Husqvarna 594090301 is a genuine OEM replacement transmission assembly designed for high-performance residential and entry-level commercial zero-turn mowers, specifically the Husqvarna Z 460 series.

Manufactured by Parker Hannifin, this HTE Series unit integrates a 10cc variable displacement pump and a 230cc high-torque wheel motor into a single, compact housing. This "sealed-for-life" design eliminates external hoses, reducing leak points and ensuring consistent power delivery directly to the wheels.

Key Features & Benefits

Integrated Hydraulic Efficiency

• Pump & Motor Combo: Features a 10cc piston pump mated to a 230cc TE Series wheel motor.

• Increased Power: The Parker HTE series is engineered to be up to 10% more efficient than comparable transmissions, delivering more usable horsepower to the deck and improving hill-climbing ability.

• Cooler Running: Optimized internal fluid dynamics allow the unit to operate at lower temperatures, preserving oil viscosity and extending component life.

Durability & Design

• Maintenance-Free: The unit comes "Fluid Filled for Life" with Parker’s exclusive HT-1000™ transmission fluid, removing the need for routine oil changes for most residential users.

• Robust Shaft: Features a standard 1.00-inch axle shaft designed to handle the torque requirements of zero-turn maneuvering.

• Smooth Operation: Provides precise, infinitely variable speed control, ensuring smooth acceleration and preventing turf damage during turns.

Technical Specifications

Compatibility

Important: This is the Left Hand (LH) unit. When sitting in the operator's seat, this transmission drives the left wheel.

• Primary Fitment: Husqvarna Z 460 Zero Turn Mowers (e.g., Model 967984801).

• Brand Compatibility: Fits select models from Husqvarna Group brands (Poulan Pro, Jonsered, Dixon) that utilize the Parker HTE 10/230 platform.

Note: Always verify the model number on the identification tag of your existing transmission before purchasing.

Installation & Troubleshooting

Matching Sets

If your machine has high hours (500+), it is highly recommended to replace both the Left and Right transmissions simultaneously. Mixing a brand-new transmission with a worn one can cause "tracking" issues, where the mower pulls to one side because the new unit is more efficient.

• Matching Right Hand (RH) Part Number: Typically 594090302.

Purging Procedure

Critical: After installation, the hydraulic system must be purged of air before operating the mower under load.

1. Lift the rear wheels off the ground safely.

2. Disengage the transmission bypass (freewheel) lever.

3. Start the engine and run at low idle.

4. Move control levers forward and backward slowly several times.

5. Engage the bypass lever and repeat to cycle fluid through the pump and motor.

   Failure to purge air can result in noise, loss of power, and immediate damage to the internal pump components.