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2009 Transmission Assembly – Reference Only

Transmission Assembly Instructions These are the transmission assembly instructions for 2009 and do not reflect any changes in the 2010 version. They are provided to give you some idea of what is required to assemble the frame.


2009 Transmission Assembly – Reference Only

Parts and Tools Needed for One Transmission Box


2009 Transmission Assembly – Reference Only The small shaft goes in the bearing without any small holes around it in the cover.

The side of the bearing with the ridge faces up.

The smooth side of this big gear faces up

Use the non-mar hammer. Note: If none available, tap with a regular hammer using a block of wood as a cushion.

The side of the small gear with the raised hub faces up.


2009 Transmission Assembly – Reference Only

The side with the raised hub faces up.

A regular hammer can be used to put the Cclip on the shaft. Apply a small amount of grease to the gears. Excess grease can spin off and might ruin the plastic cover’s finish.

Spread the grease around by turning the gears.

Install both bearings with the ridge side facing down.


2009 Transmission Assembly – Reference Only

Snap/push the cover down over the bearings.

Tighten the bolts using a medium clutch setting on the cordless drill. Note: Install the 2nd bolt on the opposite corner of the 1st bolt to pull down the cover corners evenly.


2009 Transmission Assembly – Reference Only

Make sure the shaft spins free or you’ve made a mistake. Repeat for the 2nd box.


2009 Transmission Assembly – Reference Only

Gather these parts and assemble as follows.

Square keystock fits between prongs in clip.

Push on with a nutdriver or socket.

Repeat for 2nd motor.


2009 Transmission Assembly – Reference Only The two ‘open’ holes in the motor plate line up with the screw passage holes in the cover.

Use the screws with thread-lock coating to mount the motor. Start the first screw but don’t tighten it yet.

Put in the second screw and then tighten both of them.


2009 Transmission Assembly – Reference Only

Repeat for the 2nd motor but make a ‘left’ and ‘right’ facing transmission box.


Sprocket from kit of parts

2009 Transmission Assembly – Reference Only

Gather these parts and assemble as follows.

Make sure the gear teeth are on the outside.

Be sure and use the washer as it keeps the sprocket from sliding off.

Repeat for 2nd box.


2009 Transmission Assembly – Reference Only

Leftover parts from each transmission box for an optional 2nd motor and 2nd sprocket in case you want to add them later.


2009 Transmission Assembly – Reference Only

The bottom mounting bracket goes on the side closest to the output shaft, the side opposite the motor. Take off the two screws, put on the bracket, and re-tighten them.


2009 Transmission Assembly – Reference Only

The top mounting bracket goes on the opposite side. Again, remove two screws to install the bracket.

The motor should be on the top half of the box and the output shaft on the bottom half. Repeat for the 2nd motor.


2009 Transmission Assembly – Reference Only

Finished product, ready for installation on the frame.


http://www.usfirst.org/uploadedFiles/Community/FRC/Game_and_Season__Info/2010_Assets/Reference%20Onl