VJ 66150 Seal Kit for Valu-Jack 5500 & 6600 Pallet Jack Hydraulic Unit
SKU: VJ 66150
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Product Description
The VJ 66150 seal kit is a full hydraulic seal replacement set for Valu-Jack 5500 and 6600 manual pallet jacks. If your jack is leaking or not lifting properly, this kit includes all seals and O-rings needed to rebuild the hydraulic unit.
Each seal is made from oil-resistant materials, such as nitrile rubber and polyurethane, meeting or exceeding OEM specifications.
This kit fixes worn or hardened seals that cause pressure loss and oil leaks. Replacing them restores lifting function and prevents load drift. It fits all sealing points in the pump and saves the cost of replacing the entire hydraulic unit.
Designed specifically for the 5500 and 6600 models, the VJ 66150 kit ensures a proper fit and complete rebuild of these models. It’s ideal for repair techs or maintenance staff performing standard hydraulic service.
Kit Include
2 x U-cup Seals – (Green)
1 x Polyurethane Wiper Seal – (Clear/White)
1 x Backup Ring – (Clear/White)
1 x Larger O-ring – (Black)
6 x Small O-rings – (Black)
1 x Ball Seat Seal or Gasket – (Black, dome-shaped)
1 x Plug or Valve Stem Seal – (Black, short cylindrical)
Cross References
This seal kit can also be identified as the following part numbers:
Product Specifications
Features and Benefits
Designed for Valu-Jack 5500 & 6600 pallet jacks with correctly sized seals for a precise fit.
Includes all seals needed to rebuild the full hydraulic unit, eliminating the need for extra parts.
Stops leaks and prevents pressure loss, restoring full lifting power and eliminating load creep.
Made from oil-resistant rubber and polyurethane for long-lasting durability.
Matches OEM specifications for an exact fit in the pump housing and cylinder, with no modifications required.
Offers a cost-effective alternative to replacing the entire hydraulic pump.
Contains control and check valve seals for complete pressure retention and proper release.
Enhances operational safety by ensuring consistent lifting and lowering performance.
Warranty
1-year warranty against defects in manufacturing.
Return Policy
We accept returns of this seal kit within 30 days of the purchase date. For a full refund or exchange, the kit must be unused. Since these are precision components, we cannot restock a kit once the seals have been installed or removed from their protective packaging.
If you ordered the wrong kit or no longer need it, please keep the seals sealed and contact us for return authorization. Please refer to our Return Policy page for instructions.
Not Sure If This Seal Kit Fits Your Equipment?
Our team is here to help you find the correct part. Reach out to us with your pallet jack’s model and serial number, and we will verify if VJ 66150 is compatible.
You can call us at 832-239-5393 or 1-800-210-8170, email info@palletjackson.com, or use our Live Chat service (available Monday–Friday, 9am–6pm EST).
Frequently Asked Questions
Q: Will this kit fix my pallet jack that won’t hold weight (leaks down)?
A: Yes, if worn seals are causing internal leakage. Replacing them typically resolves the issue of creeping under load. However, damaged metal parts should be polished or replaced, as seals alone can’t fix surface defects.
Q: Is there a diagram or instruction included with the seal kit?
A: The kit usually doesn’t include instructions, but diagrams are often available upon request. Take photos during disassembly to guide reassembly or contact support for help.
Q: How long does it take to install this seal kit?
A: For experienced users, about 1–2 hours. First-timers may need longer. Focus on cleanliness and correct seal placement to ensure a successful, leak-free rebuild.
Q: My pallet jack is a different brand (not Valu-Jack). Will this kit still work?
A: No. This kit is compatible with Valu-Jack 5500/6600 models only. Seal sizes vary by brand. Contact us with your Jack’s make/model for the correct kit.
Q: My pallet jack’s pump is low on oil. What type should I use?
A: Use ISO VG32 or SAE 10 hydraulic jack oil. Fill to 3/4 full and purge air from the system by pumping with the release valve open, then closed.
Q: Are the seals in this kit OEM or aftermarket?
A: They are high-quality aftermarket seals made to OEM specs. Performance matches original parts, offering a reliable and cost-effective alternative.
Q: Do I need to replace all the seals, even if only one was leaking?
A: Yes, replace all seals. If one person fails, others are likely to follow suit. A full rebuild prevents future leaks and avoids the need for repeated disassembly.
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