ME SMP12-472

Frequently Asked Questions

Q: What is the ME SMP12-472 spring set designed for?
A: The ME SMP12-472 is a compression spring set (4 springs) for Mercury Pettibone electric pallet jacks. These springs provide mechanical load support and retention for mast or tilt cylinder assemblies, returning mechanisms to neutral position under spring force.

Q: What are the compression specifications and load ratings?
A: The ME SMP12-472 spring set includes four compression springs with specific spring constants, free length, compressed length, and load-per-inch ratings. These specifications support the mast height and tilt load of the lift truck without bottoming out or binding.

Q: How many springs are included in the ME SMP12-472 kit?
A: The ME SMP12-472 contains four (4) compression springs. If your lift truck uses springs in multiple locations (mast, tilt cylinder, load retention), this kit provides the complete set for a full replacement or single assembly repair.

Q: What happens when compression springs wear or fail?
A: Worn or broken springs lose compression force, resulting in slow mast lowering, mast drift, or inability to maintain lift height. You may notice the mast hanging lower than normal, difficulty in tilt return, or reduced load stability during operation.

Q: How long do compression springs typically last?
A: Compression springs in electric pallet jacks typically last 3 to 7 years depending on duty cycle and environmental conditions. High-cycle usage, extreme temperatures, or corrosive environments reduce spring life. Regular inspection helps identify degradation early.

Q: Are all four springs in the ME SMP12-472 identical?
A: The ME SMP12-472 contains four compression springs. Confirm whether all springs are identical or if the kit contains matched pairs for different assembly locations by cross-referencing your lift truck service manual or parts breakdown.