Overview

• Manufacturer: John Deere
• Part: Seal Kit
• Part Number: AHC11303
• What it is and used for: OEM replacement seal kit for John Deere hydraulic systems, designed to replace worn seals and prevent leaks in hydraulic cylinders and valve assemblies on compatible equipment.

Key Features

• Part Number: AHC11303
• Type of machine suitable for: John Deere hydraulic assemblies that specify this kit (AHC11303) for replacement, including multiple S-series combines and related models listed in official compatibility data.
• Installation tips:
  • Depressurize the hydraulic system and drain fluid before disassembly.
  • Remove old seals and inspect bores and rods for scoring or damage; replace any worn components.
  • Clean sealing surfaces to remove dirt and debris that could compromise seal seating.
  • Lubricate new seals with recommended hydraulic oil or grease before installation.
  • Install seals in the correct orientation using proper tools to avoid pinching or twisting.
  • Reassemble, refill fluid, and bleed air to verify proper hydrostatic function and check for leaks.

Compatibility

• Suitable machine models: John Deere equipment that requires seal kit AHC11303, including the following models listed in the official compatibility data: 9770 STS; S7 700; S7 800; S7 850; S7 900; S670; S670 PRECISION UPGRADES; S670H; S680; S680 PRECISION UPGRADES; S680H; S685; S685H; S690; S690 PRECISION UPGRADES; S770; S780; S780 PRECISION UPGRADES; S785; S790; S790 PRECISION UPGRADES.
• Alternative part numbers: Not listed by the manufacturer.