Product Description
OEM Yale steer arm return spring (SKU YL 501890100) for MP/MPB 040 AC electric pallet truck handle assembly. Helical compression spring constructed from high-carbon steel, phosphate coated for corrosion resistance. Compatible with multiple equivalent part numbers and superseded models. Validated for Yale electric lift truck platforms.
Compatibility: Fits pallet jacks made by Yale, model MP/MPB 040 AC. SKU: YL 501890100
Specifications
Material & Construction
| Hardness | Rockwell C43 minimum (estimation based on industry practice for spring steel) |
Mechanical Specifications
| Operating Orientation | Horizontal installation within handle linkage |
| Torque Transmission | Direct application in restoring steer arm alignment |
| Fatigue Rating | Suitable for continuous cycling in material handling environment |
Part Numbers
| OEM Part Number | YL 501890100 |
| Manufacturer Part Number | YL 501890100 |
| Cross-Reference Part Numbers | 5018901-00; YT501890100; SK-29150150J |
| Supersedes/Replaces | 5018901-00 |
| Equivalent/Interchange | YT501890100; SK-29150150J |
| Model Compatibility | Yale MP/MPB 040 AC electric pallet truck |
| Manufacturer Diagram Reference | Handle and steer arm assembly—PMC, item 23 |
Frequently Asked Questions
Q: What is the 501890100 steer arm return spring?
A: The 501890100 is a steer arm return spring for Yale MP/MPB 040 AC electric pallet trucks. It is installed in the handle assembly to restore steering control to center position after operator input.
Q: What are the specifications and material of the 501890100?
A: The 501890100 is a helical compression spring constructed from high-carbon steel with phosphate coating. This coating provides corrosion resistance for use in wet and cold storage environments.
Q: Which Yale pallet jack models are compatible with the 501890100?
A: The 501890100 fits Yale MP/MPB 040 AC electric pallet truck models. Verify your equipment model and serial number before ordering to ensure compatibility.
Q: What are the cross-reference and equivalent part numbers for the 501890100?
A: Equivalent part numbers include 5018901-00, YT501890100, and SK-29150150J. The 501890100 is the current direct replacement for the earlier 5018901-00.
Q: How long does the 501890100 steer arm spring typically last?
A: Steer arm return springs generally have a service life of 3 to 5 years with regular use and maintenance. Lifespan varies based on equipment usage frequency and operating environment. Replace if spring tension decreases or steering response becomes sluggish.
Q: What symptoms indicate the 501890100 needs replacement?
A: Replace the spring if the steering arm does not return to center position, steering feels loose or unresponsive, visible rust or corrosion appears, or the spring is visibly bent or deformed.