BEARING 0778720 - Caterpillar

Illustration 12 g00954083
Install the dust cap (3) and the snap ring (4) .
Tension the track. Refer to Operation and Maintenance Manual, "Track (Rubber) - Inspect/Adjust".Removing the Track 267 and 277
Position the machine on firm, level ground.
Remove any work tool that is attached to the quick coupler. The quick coupler is mounted to the front of the loader arms.
Raise the loader arms and install the brace for the loader lift arm. Refer to Operation and Maintenance Manual, "Loader Lift Arm Brace Operation".
Detension the track. Refer to Operation and Maintenance Manual, "Track (Rubber) - Inspect/Adjust".
Use an appropriate floor jack to lift the machine so that the track is nearly off of the ground. Use appropriate jack stands in order to block up the machine.
Illustration 13 g00954089
Remove the three bolts (1), (2) and (3) that secure the drive frame.Note: The bolt (2) is located on the opposite side of the drive frame from bolt (3). It will be necessary to raise the body of the machine in order to gain access to this bolt.Note: When you reinstall the three bolts, tighten bolts (2) and (3) to the following torque 120 20 N m (89 15 lb ft). When you reinstall the bolt (1) tighten the bolt to the following torque 430 60 N m (317 44 lb ft).
Install the track adjusting tool into the brackets (A). Ratchet the tool in order to slide the drive frame forward.Note: When you reinstall the track you must slide the drive frame rearward into the original position. A pry bar may be needed in order to pry the drive frame upward when you slide the drive frame rearward.
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Remove the two bolts and the locknuts (7). Remove the four bolts and lockwashers (5). Remove the support plate for the drive sprocket (6) .Note: When you reinstall the bolts (6) tighten the bolts to the following torque 120 20 N m (89 15 lb ft). When you reinstall the bolts (7) tighten the bolts to the following torque 105 20 N m (77 15 lb ft).
Remove the twelve bolts (4) that retain the drive sprocket to the drive motor.Note: When you reinstall the bolts (4) tighten the bolts to the following torque 270 40 N m (199 30 lb ft).
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Use a lifting device that is suitable in order to lift the track. Lift the track in order to remove the drive sprocket. It may be necessary to insert a chock in front of the rear idler in order to prevent the track from spinning as you lift the track.
Remove the drive sprocket.
Remove the lifting device from the track. The lifting device is not required for removing the track from the machine.
Grasp the track on top of the drive sprocket. Pull the top of the track upward and pull the track to the outside. Slide the track past the bogies. Lift the track off the front idlers.Installing the Track 267 and 277
Follow the steps in reverse order in