Gearbox Specifications Gearbox Power Take-Off Caterpillar Group Number 67 Caterpillar Assembly Number 3N-7840 (The specification number must be provided when ordering spare parts.) Refer to T.D. S500 for maximum engine RPM and other limitations. IMPORTANT: When disengaging the clutch, the operating lever must return to its rear position from the vertical position. If the clutch does not pull, overheats, or the operating lever jumps out, adjustment is required: Adjustment: Remove this plate, then disconnect the lock. Install the adjusting ring or yoke and turn it clockwise for a force of 125 to 95 lbs at 13.6 inches on the lever to operate the clutch. New clutch discs require several break-in adjustments. Lubrication: Apply a small amount of No. 2 lithium grease to the clutch release collar every 10 hours and to the bearings every 120 hours. Made in USA Made for Caterpillar Tractor Twin Disc Incorporated