CL 1808262 Pump Assembly (Complete) for Clark CJ55 Pallet Jack
SKU: CL 1808262
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Product Description
The CL 1808262 pump assembly is a complete hydraulic unit for the Clark CJ55 pallet jack. This unit replaces the entire pump section of the jack (it includes internal components corresponding to items 17-34 & 36-56 in the parts diagram) – that means the piston, cylinder, valves, springs, and seals are all pre-installed.
It’s a direct-fit replacement built to OEM specifications, allowing you to restore complete lifting and lowering performance without the hassle of rebuilding the old pump.
Technical Specifications
Warranty Information
1-year manufacturer warranty
Key Features
Complete pump unit – ready to install assembly that replaces all major hydraulic components in one go.
Direct-fit for Clark CJ55 pallet jack
Restores full lifting capability, addressing issues such as inability to lift, slow lift, or jack not holding pressure under load.
Time-saving solution compared to rebuilding: no need to source individual seals or small parts – simply drop in the new pump assembly.
Heavy-duty construction with a robust cast housing and high-quality steel internals to ensure durability and long service life under daily use.
Built to OEM standards
Stock Availability
In stock and ready to ship
Not Sure If This Part Will Fit Your Equipment?
If you're uncertain about compatibility, please contact us through our channels: phone: 832-239-5393 or 1800-210-8170, email: info@palletjackson.com, or live chat, available Monday through Friday, 9 am to 6 pm EST.
Frequently Asked Questions
Q: Is it better to rebuild my old pump or replace it with this assembly?
A: Replacing the entire pump assembly is often more convenient and reliable than attempting to rebuild the old one. By installing a new complete assembly, you ensure all components are fresh and within factory tolerances. It saves time (no need to disassemble and troubleshoot each part) and avoids potential mistakes during a manual rebuild. ‘
Q: What load can the CL 1808262 pump safely handle?
A: The hydraulic circuit is matched to the CJ55’s published 5,500 lb (2,500 kg) capacity, and the built-in relief valve prevents fork lift-up when that limit is exceeded.
Q: Will this pump assembly come with hydraulic oil inside?
A: No, new pump assemblies are typically shipped dry (without hydraulic oil), as oil could leak during transit. It’s also best to fill the jack on site to the proper level.
Q: What type of hydraulic fluid is compatible with this pump?
A: The pump is compatible with ISO VG 32 or VG 46 grade hydraulic oil. Avoid using brake fluid, motor oil, or unapproved alternatives, as they may degrade the internal seals.
Q: How much hydraulic oil should I add after installing the new pump?
A: Add approximately 0.25–0.30 L (≈0.5 pt) of ISO-32 hydraulic oil for ambient −5 °C to +40 °C operation.
Q: Does the assembly include an overload bypass valve?
A: Yes. A factory-set bypass valve vents excess pressure, protecting the cylinder and chassis, while a separate metering valve maintains smooth, controlled fork descent under rated loads.
Q. What is the temperature range within which the pump can operate without experiencing performance loss?
A: With ISO-32 or L-HV46 oil, the unit is rated for continuous service from −20 °C to +40 °C; outside that band, oil viscosity changes can slow lift speeds and accelerate seal wear.
Frequently Bought Together
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Explore our complete Clark parts catalog for this model to find all compatible parts.
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