AFTERCOOLER GP-RAW WATER 3177979 - Caterpillar

Adjust Circle to Drawbar Clearance
The "C" clamp must be installed before grounding the blade. 1. Install a "C" clamp to the front of the circle and the drawbar. Tighten the clamp until the wearstrips are touching the top of the circle and the bottom of the drawbar. 2. With the blade level and 90° to the frame, lower the blade to the ground, apply a slight down pressure, apply the parking brake and stop the engine. 3. Inspect the wearstrips (between the circle top surface and the drawbar) for wear. If any of the wearstrips have worn to a minimum thickness of 1.5 mm (.06 inch), they must be replaced. Wearstrips that are not excessively worn may be reused. See Special Instruction, Form SMHS7185, for procedures.Shims 5T4749 may be used between the drawbar and wearstrips to insure run contact between the wearstrips and the circle. No more than two shims should be used under any one wearstrip.Adjust Circle to Shoe Clearance
1. Install a "C" clamp to the front of the circle and the drawbar. Tighten the clamp until the wearstrips are touching the top of the circle and the bottom of the drawbar. 2. With the blade level and 90° to the frame, lower the blade to the ground, apply a slight down pressure, apply the parking brake.The wearstrips should now be contacting the circle and drawbar, 360° around the circle. 3. Be sure the shoe mounting bolts are tight and the wearstrips are completely seated in the shoes. 4. Measure the clearance between the bottom of the circle and the top of the shoe wearstrip. The clearance should be adjusted to approximately 0.5 mm (.02 in). This should provide the minimum clearance which will permit free rotation of the circle thru 360° rotation.5. Make the adjustment by adding or removing shims between the shoes and the drawbar. The shim pack contains shims that are .25 mm (.01 in) and 0.76 mm (.03 in) thick. 6. Adjust one shoe at a time. Loosen adjusting screws (1) and remove mounting bolts (2). 7. Add or remove shims to obtain the clearance shown in step 4. Install and tighten the mounting bolts.8. After adjusting each shoe and tightening all mounting bolts, repeat the clearance measurements. Make correction if necessary. The circle must rotate freely without binding after all adjustments are made.Adjust Circle Pinion and Circle Shoe Clearance
The pinion and circle tooth engagement is determined by the circle shoe adjustment. To reduce wear to the pinion and circle teeth and improve accuracy of adjustment, clean the circle and pinion of dirt and abrasive material. Apply clean lubricant to the pinion and circle teeth after the adjustment is made. 1. Park the machine on level ground. Set the blade 90° to the machine frame, lower the blade to the ground and apply a slight down pressure.2. Slowly inch the machine forward and apply the parking brake to hold a light load between the front shoe wearstrips and the circle. Stop the engine.