Upgrade your hydraulic steering maintenance with this comprehensive seal kit for steering cylinders designed for use with JLG Part #70004239 applications. This kit provides a complete set of precision-matched seals engineered to prevent leaks, maintain internal hydraulic pressure, and ensure smooth, accurate steering control throughout the operating range of compatible equipment.
Proper sealing within your steering cylinder is crucial for consistent hydraulic performance. Over time, seals can wear due to heat, pressure cycling, and contamination, leading to drips, sloppy steering response, and loss of efficiency. Installing a new seal kit replenishes the cylinder’s ability to contain fluid under pressure and significantly enhances responsiveness and reliability.
This kit includes essential components sized for the specific bore and rod dimensions of steering cylinders that match the JLG 70004239 application. Each seal is manufactured from durable, hydraulic-grade elastomers and polymers selected for resilience against wear, heat, and fluid degradation.
Benefits
- Leak Prevention: Strong, precision-fit seals reduce fluid loss.
- Enhanced Stability: Restores proper hydraulic pressure control within the cylinder.
- Improved Lifespan: High-quality materials withstand demanding operating conditions.
- Efficient Serviceability: Complete kit simplifies maintenance and reduces downtime.
What machines use JLG 70004239 seal kit?
The JLG 70004239 hydraulic seal kit is used in steering cylinders installed on select JLG electric scissor lifts, particularly within the ES series such as:
- JLG 2632ES
- JLG 3246ES
- JLG 1932ES
Compatibility depends on the steering cylinder configuration, not just the lift model. Always verify using your machine serial number or cylinder part number.
What does the JLG 70004239 hydraulic seal kit include?
The kit typically includes:
- Rod seals
- Piston seals
- Wiper seals
- O-rings
- Backup rings
These components restore proper hydraulic pressure sealing inside the steering cylinder.
How do I know if my steering cylinder needs a seal kit?
Common signs include:
- Hydraulic fluid leaks near the steering cylinder
- Loose or unresponsive steering
- Jerky steering movement
- Visible seal wear during inspection
Replacing worn seals helps restore smooth and precise steering performance.
Is JLG 70004239 compatible with all JLG scissor lifts?
No. It is only compatible with machines that use the specific steering cylinder design associated with this part number. Many ES-series lifts share components, but fitment must be confirmed through a parts manual or serial number lookup.
Can I install this hydraulic seal kit myself?
Installation requires:
- Proper hydraulic system knowledge
- Clean working conditions
- Correct torque specifications
- Seal installation tools
Improper installation can cause leaks or premature failure. Professional installation is recommended if unsure.
What are the benefits of replacing steering cylinder seals?
Replacing seals:
- Prevents hydraulic leaks
- Restores steering precision
- Maintains correct pressure balance
- Reduces downtime
- Extends cylinder lifespan
What is the function of a hydraulic steering cylinder seal kit?
A hydraulic seal kit ensures that pressurized fluid remains contained inside the cylinder. This allows consistent steering response and prevents internal bypass or external leakage.
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