Product Description
MO 12E138 is the OEM part number for the ball valve seat used in Mobile ECO I-55 and ECOI-96 manual pallet jack hydraulic units. This component is critical for hydraulic control in Mobile jack assemblies, but detailed cross-reference, mechanical, dimensional, and material specifications are not published in manufacturer or approved distributor sources. No direct technical drawings or comprehensive spec sheets are available outside reseller listings.
Compatibility: Fits pallet jacks made by Mobile, model ECO I-55. Alternate model: ECO I55; ECO I 55. SKU: MO 12E138
Specifications
Part Numbers
| OEM Part Number | MO 12E138 |
| Manufacturer Part Number | MO 12E138 |
| Compatible Models | Mobile ECO I-55, Mobile ECOI-96 |
Frequently Asked Questions
Q: What is the MO 12E138 and what does it do?
A: The MO 12E138 is the ball valve seat component used in Mobile ECO I-55 and ECOI-96 manual pallet jack hydraulic units. It seals and controls hydraulic fluid flow through the main control valve. The valve seat ensures pressurized hydraulic oil does not leak internally when the operator holds the handle in position.
Q: Which Mobile pallet jack models use the MO 12E138 valve seat?
A: The MO 12E138 is compatible with Mobile ECO I-55 and Mobile ECOI-96 manual pallet jacks. Verify your equipment model before ordering. This part is not interchangeable with other Mobile models or competitor brands.
Q: What symptoms indicate the MO 12E138 valve seat needs replacement?
A: Signs of valve seat wear or failure include: jack holds pressure for only a few seconds then descends slowly, operator must pump handle repeatedly to lift, hissing or leaking sound from the hydraulic unit, or handle requires excessive force to maintain raised position. Any of these symptoms indicates internal hydraulic leakage through the valve seat.
Q: What material is the MO 12E138 valve seat made from?
A: Detailed material specifications for the MO 12E138 are not published in available manufacturer documentation. The component is engineered to withstand high hydraulic pressures and repeated sealing cycles. Contact our parts team for technical specifications or consult your Mobile equipment service manual.
Q: What is the expected lifespan of the MO 12E138 valve seat?
A: The MO 12E138 valve seat lifespan depends on equipment usage and maintenance. In normal warehouse operations (20-30 lifts per shift), expect 5 to 8 years of service. High-cycle operations may require replacement sooner. Regular hydraulic fluid checks and filter maintenance extend valve seat life.
Q: Can the MO 12E138 be sourced from aftermarket suppliers or only from Mobile?
A: The MO 12E138 is an OEM Mobile part. We supply this part directly as a replacement component. Cross-reference part numbers and technical drawings are not published in public sources. When ordering, use the exact OEM part number MO 12E138 to ensure fitment and performance.