JIMS 729 Inner Primary Bearing and Seal Installer/Remover Tool, Big Twin Applications

JIMS 729 Inner Primary Bearing and Seal Installer/Remover Tool, Big Twin Applications, Made in USA

• JIMS 729 is a professional tool set for removing and installing the Harley-Davidson inner primary bearing and seal without an arbor press. It guides force on the outer race to protect components and delivers precise, repeatable service for Big Twin applications.
• Features:
  • Removes and installs the inner primary bearing and seal in chassis, avoiding the need to pull the primary case or use a press
  • Applies force at the bearing outer perimeter to prevent damage during installation
  • Helps ensure the seal is seated squarely to reduce leaks at the transmission mainshaft
  • Vehicle specific design for Harley-Davidson Big Twin primary drive service
  • Made in USA construction for durability and dimensional accuracy
• Specifications:
  • Manufacturer: JIMS
  • Part Number: 729
  • Product Type: Inner primary bearing and seal installer and remover tool
  • Fitment: Harley-Davidson Big Twin models as listed by JIMS distributors
  • Service Targets: Inner primary bearing OEM 9135 and outer bearing OEM 9231 where applicable; inner primary seal OEM 12052A
  • Function: In-frame removal and installation with controlled, perpendicular drive
  • Country of Manufacture: USA
  • System Compatibility or Application: Primary drive service on Big Twin transmissions to replace the inner primary bearing and seal
  • Quantity: Each
  • Alternate or Cross References: Often listed as Inner Primary Seal and Bearing Tool, JIMS 729
• The inner primary bearing tool can also be referred to as inner primary bearing installer, inner primary seal installer, Big Twin primary bearing tool, Harley primary bearing remover, and JIMS 729 primary tool.

JIMS manufactures precision motorcycle service tools and performance components used by professional technicians, with a focus on accurate, durable fixtures for Harley-Davidson engine and drivetrain service.

Q: What components does this tool service?
A: It removes and installs the inner primary bearing and the inner primary seal that the transmission mainshaft passes through, matching common Harley OEM numbers 9135, 9231, and 12052A where specified.

Q: Do I need an arbor press?
A: No. The tool is designed for in-frame service and provides a controlled, square drive so you can avoid using a press.

Q: Which Harley models does it fit?
A: It is listed for Harley-Davidson Big Twin applications; verify your year and model against the bearing and seal part numbers before use.