# Shaft Retention Assembly The MAXPlanetary Base Kit comes with a 3in long rounded 1/2in hex shaft with a 10-32 tapped hole at either end. This shaft can be retained in the MAXPlanetary 1/2in Socket Hex Output with a screw installed from the back side before assembling the rest of the gearbox. In addition to the included hex shaft, additional lengths of pre-tapped shaft are available from REV. Also, any length of team-provided 1/2in hex shaft (with or without rounded corners) can be retained in the output provided that it has a 10-32 tapped hole. ## Assembly Instructions For assembly you will need a 1/8" Allen Wrench. | | | | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | 1) Line up the hex of the shaft and the output block. | ![](https://2800450911-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F4vnkeyE3Rv32OmveFas2%2Fuploads%2F9RA2vS3sANzBoKM8M6Zm%2Fimage.png?alt=media\&token=e1b2e7d9-8e13-41a1-93ab-97791a451962) | |

2) Insert the hex shaft in the output. Ensure that the shaft bottoms out in the socket.

Note: If the shaft has been cut, ensure that any burrs have been removed from the cut end, so that the shaft will fit in the output properly.

| ![](https://2800450911-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F4vnkeyE3Rv32OmveFas2%2Fuploads%2FeMHpivy82q1lC9pWVHnG%2Fimage.png?alt=media\&token=b39646c1-a4d6-4d2d-9408-979c60501e8b) | |

3) Apply thread-locking compound to the 1/2in long Button Head Cap Screw (included in the MAXPlanetary Base Kit or Hardware Kit).

Note: We recommend Loctite 243 (commonly known as “Blue Loctite”).

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\*not to scale

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4) Insert the button head screw into the back side of the output.

Note: This is typically easiest with a hex key or t-handle WITHOUT a ball end.

| ![](https://2800450911-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F4vnkeyE3Rv32OmveFas2%2Fuploads%2FzMNDhfkq5bmEvj1HSkNM%2Fimage.png?alt=media\&token=62935504-9e6f-4549-9b39-27ded86ec60b) | | 5) Tighten down the screw into the threads in the end of the output shaft. | ![](https://2800450911-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F4vnkeyE3Rv32OmveFas2%2Fuploads%2FAHpm6uSjMt6WzAkIwjEa%2Fimage.png?alt=media\&token=8f313567-8520-4f35-810f-f31189693b41) | {% hint style="success" %} [You are now ready to continue assembling your MAXPlanetary Gearbox!](https://docs.revrobotics.com/ion-build/build-guides/maxplanetary-gearbox-assembly) {% endhint %}