JD17D-9312919 Idler for John Deere/Hitachi
Application & Compatibility
Guaranteed Fit Models: John Deere mini excavators 17D, 17G, 17P, 17ZTS; Hitachi mini excavators ZX17U-5N, EX17U, ZX17U. Extended compatibility with John Deere 17ZTS and Hitachi ZX17U series. No serial number restrictions. Validated for precise fitment through rigorous testing, requiring no modifications for installation.
Part & Specification Details: Main part number: 9312919; Alternate part numbers: 9312918, 9203517 (authorized dealer part numbers for both brands). Core features: Tension idler designed to guide track movement and regulate slack. Pre-integrated with bushing (3055940) and brackets (2031923), eliminating the need for additional components.
Model Confirmation Reminder: Verify the exact equipment model (e.g., 17ZTS vs. 17G) prior to purchase. Alternate part numbers 9312918 and 9312919 are fully interchangeable. Hitachi ZX17U-5N is 100% compatible. For uncertainties, contact our technical team with your equipment details for professional verification.
Installation & Maintenance Tips
Installation Guidance: Direct OE-equivalent aftermarket replacement. Mounting position: Undercarriage (aligned with the track tensioner). Key advantage: Fully assembled and installation-ready—reuses existing factory bolts. Note: Tensioner spring is not included; the idler regulates track tightness in conjunction with the tensioner system.
Maintenance Recommendations: Conduct regular inspections for wear, deformation, or seal degradation. Focus on the double-lip seals—keep them free of debris to retain lubrication. Timely replacement prevents track slack, misalignment, or derailment. Maintain proper track tension per the equipment manual for optimal operational performance.
Quality & Related Supplies
Quality & Craftsmanship: Premium aftermarket component engineered to John Deere/Hitachi OE standards. Features a single-flange design for precise fitment. Equipped with high-grade double-lip seals that seal out dust and contaminants while retaining critical lubrication, significantly extending the idler’s service life.
Related Supplies: One-stop procurement of undercarriage parts for John Deere 17D/17G series: Idler (9312919), Sprocket (2056268), Bottom Roller (4340393), Rubber Track. Comprehensively fulfills the undercarriage repair and maintenance requirements of all compatible models.
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