Coil Compression Spring for Pallet Mule AA5000 and AA5500
PU AA-04
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Compatibility
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Visit our diagram page for part references to popular models
Product Description
PU AA-04 is an OEM coil compression spring manufactured by Pallet Mule for the AA5000 and AA5500 manual pallet jack hydraulic units. It serves as the return or biasing spring within the hydraulic pump mechanism, constructed from high-tensile spring steel for internal application. Part numbers AA-04, PUAA-04, and PTAA-04 are direct cross-references. Compatible exclusively with Pallet Mule manual pallet jacks in the AA5000/AA5500 series.
Compatibility: Fits pallet jacks made by Pallet Mule, model AA5000. SKU: PU AA-04
Specifications
Part Numbers & Compatibility
| Make | Pallet Mule, Wesley |
| Model | AA5000, AA5500 |
| Part Number | PU AA-04 |
| Manufacturer Part Number | AA-04 |
| Alternate Part Number | PUAA-04 |
| Cross-Reference Part Numbers | PUAA-04, AA-04, PTAA-04 |
Performance Specifications
| Operating Mechanism | Applies return tension to piston or handle control |
Additional Specifications
| Material Specification | High-tensile spring steel |
| Compatible Unit | AA5000 and AA5500 Pallet Mule manual pallet jacks |
| Supersedes / Replaces | Replaces all previous AA-04 designated springs for Pallet Mule AA5000 and AA5500 |
Frequently Asked Questions
Q: What is the PU AA-04 spring and what does it do?
A: The PU AA-04 is a coil compression spring used in the hydraulic pump mechanism of Pallet Mule manual pallet jacks. It functions as the return or biasing spring, helping to maintain proper operation of the hydraulic system.
Q: What material is the PU AA-04 made from?
A: The PU AA-04 is constructed from high-tensile spring steel, which provides durability and ensures consistent performance in internal hydraulic applications.
Q: Which models is the PU AA-04 compatible with?
A: The PU AA-04 is compatible with Pallet Mule manual pallet jacks in the AA5000 and AA5500 series. It is part of the pump assembly in these models.
Q: What are the cross-reference part numbers for the PU AA-04?
A: Direct cross-reference part numbers are AA-04, PUAA-04, and PTAA-04. These are equivalent designations for the same spring component.
Q: What symptoms indicate the PU AA-04 needs replacement?
A: Loss of hydraulic pressure, difficulty maintaining lift height, or reduced responsiveness in the pump may indicate wear or failure of the PU AA-04. Inspect the hydraulic unit if these symptoms occur.
Q: How can I find the right replacement for my pallet jack?
A: For Pallet Mule manual pallet jacks in the AA5000 and AA5500 series, use part numbers AA-04, PUAA-04, or PTAA-04 to find the correct replacement for the PU AA-04 spring.