Product Description
MO 12E121 compression spring component for Mobile ECO I-55 manual pallet jack hydraulic unit. OEM replacement part functioning as damping valve spring in hydraulic pump assembly. Cross-references to ML12E121. Assembly position 31 in hydraulic system schematic.
Compatibility: Fits pallet jacks made by Mobile, model ECO I-55. Alternate model: ECO I55; ECO I 55. SKU: MO 12E121
Specifications
Hydraulic System
| System Application | Hydraulic pump assembly pressure regulation |
Part Numbers & Compatibility
| OEM Part Number | MO 12E121 |
| Cross-Reference Part Numbers | ML12E121 |
| Compatible Equipment Model | Mobile ECO I-55 |
| Assembly Reference | Item 31 in hydraulic unit assembly diagram |
| Related Assembly Component | Works with damping valve spindle part 12E122 and damping valve seat part 12E123 |
Frequently Asked Questions
Q: What does the MO 12E121 compression spring do in the pallet jack?
A: The MO 12E121 is a compression spring component that functions as a damping valve spring in the hydraulic pump assembly of Mobile ECO I-55 manual pallet jacks. It regulates pressure and damping action within the hydraulic system.
Q: Which Mobile pallet jack models use the MO 12E121?
A: The MO 12E121 is designed for Mobile ECO I-55 manual pallet jacks, including alternate model designations ECO I55 and ECO I 55.
Q: What is the cross-reference part number for the MO 12E121?
A: The MO 12E121 cross-references to ML12E121. This alternate part number may appear in some documentation or supplier catalogs but references the same component.
Q: Where is the MO 12E121 located in the hydraulic assembly?
A: The MO 12E121 is positioned at item 31 in the hydraulic unit assembly diagram. It works in conjunction with the damping valve spindle (part 12E122) and damping valve seat (part 12E123).
Q: What happens when the MO 12E121 spring fails?
A: A failed compression spring results in loss of damping action, causing erratic lowering speed, inability to maintain controlled descent, or complete failure of the lowering valve. The pallet jack will not operate safely and requires immediate repair.
Q: Are springs reusable after removal?
A: No. Once a compression spring like the MO 12E121 is removed from service, it should not be reused. Springs lose their tension characteristics once disturbed and may not provide reliable damping pressure. Always install new springs.