TM 9-2320-209-34-2-2 1. Check four vanes (1) for scores or other wear. 2. Check two pins (2) and casing (3) for breaks, cracks or other damage. Check all threaded holes for damage. 3. Check strainer (4) for kinks or broken screening. 4. Check two heads (5) for cracks, breakage or wear. Wear must not exceed 0.003-inch in depth. Use micrometer to measure wear. 5. Check two covers (6) for cracks or breakage. GO TO FRAME 4 17-237