JLG Cartridge Valve 70004578 – Hydraulic Component for 800S 800SJ 680S 810SJ 860SJ Boom Lifts

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Solenoid Cartridge Valve 70004578 – Optimized Product Page Content

JLG Cartridge Valve 70004578

🔹 Product Overview

The Solenoid Cartridge Valve with JLG part number 70004578 is a critical electro-hydraulic component used in the main control manifold assembly of various JLG Telescopic Boom Lifts (S-Series and SJ-Series).¹ This component is a cartridge valve, designed to screw into a dedicated port on the hydraulic manifold block.² It functions as part of a solenoid valve assembly to control the flow and/or direction of hydraulic fluid in a specific circuit.

While the exact function is often specific to the machine’s configuration (e.g., controlling a specific stage of telescope, or a specific relief/control function), it is confirmed as a Cartridge Valve integral to the main control assembly.³ The part number 70004578 is the necessary replacement for addressing issues such as loss of hydraulic function, erratic movement, or a complete failure of the controlled circuit due to a mechanical failure of the cartridge spool or seals.

🔹 Key Features & Benefits

✅ Precision Fluid Control: Ensures accurate hydraulic flow dynamics for swift and precise machinery movements.

✅ High-Reach Boom Integration: Essential component within the complex hydraulic control system of large JLG booms.

✅ High Reliability: Engineered to meet the rigorous demands of heavy machinery hydraulic applications.

✅ Direct OEM Cross-Reference: High-quality aftermarket equivalent for JLG part number 70004578.

🔹 Technical Details

Detail	Specification
Part Number	70004578
Condition	New OEM or high-quality aftermarket replacement
Type	Hydraulic Cartridge Valve (likely Solenoid-Controlled or Function Cartridge)
Function	Controls the flow and/or direction of hydraulic fluid within a specific circuit of the main control valve assembly.
Intended Use	Critical fluid control in main lift, steer, or telescope circuits.
Application Location	Screws into a port on the main hydraulic manifold block (refer to JLG manual for specific location).
Warranty	Standard 6-12 month warranty against manufacturing defects (varies by supplier)

🔹 Compatible JLG Models & Applications

The Cartridge Valve 70004578 is a crucial component compatible with the hydraulic systems of the following JLG Telescopic Boom Lifts.⁴ Model compatibility should always be verified using the full machine serial number:

JLG Equipment Series	Specific Compatible Models (Examples)
Telescopic Boom Lifts	680S, 800S, 800SJ, 810SJ, 860SJ
Common Application	Found in the Main Control Valve Assembly of these models, often used for critical control or relief functions (e.g., Item 11 in the JLG 680S/800S/860SJ Main Control Valve diagram).

🔹 Why Choose RQ Parts?

Restore Control: Guarantees the hydraulic function controlled by this cartridge operates reliably and predictably.

OEM Fit and Performance: Ensures seamless integration and performance equal to the original equipment specifications.

High Quality: Engineered with robust materials to withstand operational stress, ensuring longevity and durability.

Competitive Pricing: Cost-effective solution for replacing a high-value, specialized hydraulic control component.

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Delivery Times

Average Delivery Time is 10-15 days within worldwide.
For overseas delivery Message Us or Call Toll Free at +8618221399269

General Returns: All returns must be requested within 30 days of invoice.
Please note that this refund policy applies to parts purchases only. There are no refunds available for equipment purchases.

General Returns: All return requests must be made within 30 days of the invoice date. Returned merchandise will ONLY be accepted with an issued Return Authorization number and must be returned within 30 days of issuing that Return Authorization number. Special-Order products, electronics, paints, chemicals, lubricants, LPG tanks, and fire extinguishers are non-returnable once ordered. Returned items must be sent to Shanghai RQMACHINE Equipment with freight prepaid.

All returns, except those involving a Shanghai RQMACHINE Equipment order or product error, will be subject to a 25% restocking charge per line item.

Merchandise returned as defective will be thoroughly tested and inspected. For items verified as defective, Shanghai RQMACHINE Equipment will, at its sole discretion, either repair or replace the merchandise at no charge, or issue a full credit for the defective merchandise, including freight. Merchandise returned as defective but found to be working properly will be subject to a testing fee and the 25% restocking charge per line item.

Credit will not be issued for merchandise damaged due to corrosive materials, abuse, alteration, or misuse.

Before returning any merchandise to Shanghai RQMACHINE Equipment, a Return Authorization Number must be obtained from our sales/customer service department.

Your request must include:

Part Number & Description
Return Reason
Order Number

Phone: +8618221399269