OEM replacement hydraulic cylinder for EQ Systems AM series tube-in-tube jack legs. 16" stroke. Compatible with SAE and NPTF fittings. Direct drop-in replacement for the AM series.
The EQ Systems 1140 is the OEM replacement hydraulic cylinder for AM series tube-in-tube jack legs with a 16" stroke. When internal cylinder seals wear out — causing a jack leg to drift, lose holding force, or fail to fully extend or retract — replacing the cylinder restores the jack to full operating condition without replacing the entire assembly.
The fittings on this cylinder are compatible with both SAE and NPTF hydraulic hose fitting types, accommodating variations found across different production years of AM series installations. The 16" stroke is the shortest available in the AM series — confirm your jack's stroke length before ordering, as AM cylinders are available in 16", 20", and 24" stroke sizes.
The 1140 is a direct replacement for AM series jack legs with a 16" stroke. AM, SM, and CT series cylinders are not interchangeable — dimensions and bore vary between series. Within the AM series, stroke sizes of 16", 20", and 24" are available. Use the Hydraulic Cylinder Identification Chart for Tube-in-Tube Jacks available through EQ Systems service and support documentation to confirm the correct cylinder, or contact EQ Systems technical support with your jack model number.
The 1140 cylinder fittings have been used with both SAE (straight thread O-ring) and NPTF (tapered pipe thread) fitting types. This dual compatibility accommodates the range of hydraulic hose configurations found on AM series jacks across different production years, reducing the need for additional adapters in most installations.
Have your jack model number ready when contacting EQ Systems support. EQ Systems provides a Hydraulic Cylinder Identification Chart for Tube-in-Tube Jacks through their service and support documentation to help confirm the correct part. Technical Support: EQ Systems Toll Free: 1-800-846-9659 Local: 574-264-3437 Hours: Monday–Friday, 7AM–4PM EST Manufacturer: EQ Systems — 19300 Grange St, Cassopolis, MI 49031
★ Highlighted column = this product. Measure your existing cylinder's stroke before ordering. Contact EQ Systems if you are unsure which cylinder fits your jack.