24. SERVICE PROCEDURE 3. Clean the adapter nose to make sure the point will fully seat. 4. Check the plug for torn, cracked or seperated rubber when reusing any plug. NOSE CROSS SECTION CHECK PLUG NOTICE Plugs for Hot Slag points are not encased in rubber. Replace the plug if damage is discovered. With fines removed from the hole, insert the plug, making sure it seats fully on the bottom of the hole. The shoulder of the plug should be no deeper than 3.2 mm (1/8 in) MAXIMUM ALLOWABLE DEPTH 5. Twist the point on withe a quarter turn to contact the end of the end of the adapter nose. Check the lock groove to be sure the plug remains fully seated. 6. Inspect the top of the pin.
It should be free of sharp edges due to wear or peening. If there are sharp edges, replace the pin. Insert the pin with the bevel down and the recess to the inside so the recess can engage the plug tip. RECESS BEVEL PIN NOTICE The pin is marked with an arrow which must point downward. 7. Start the pin with a swift, sharp blow with the hammer. If the pin becomes crooked after the first blow, straighten it before proceeding. Drive the pin in until the top is flushwith the top of the upper pin retaining ear located on the adapter nose. FLUSH UPPER PIN RETAINER PIN LOWER PIN RETAINER PC450-ENG 3-38