TM 9-2320-209-34-2-1 f. Inspection of Bearings. FRAME 1 1. Place a light behind bearing assembly. 2. Hold wheel bearing cone (1) and turn inner race (2) slowly. 3. Check that rollers (3) and wheel bearing cone (1) have no cracks, flaking, pitting, or long or deep scratches. 4. Check that wheel bearing cone (1) has not overheated. Wheel bearing cone will turn blue where it has overheated. 5. Check that bearing cup (4) has no scoring, pitting or long or deep scratches. NOTE If bearing rollers (3) are damaged, throw bearing cone (1) away and get a new one. 6. Throw away damaged parts and get new ones. END OF TASK 10-104