TM 9-2320-361-20 12-21. DISCHARGE VALVE CONTROL LEVERS MAINTENANCE (M49A2C) (Contd) c. Cleaning and Inspection 1. Refer to para. 2-10 for general cleaning instructions. 2. Refer to para. 2-10 for general inspection instructions. Table 12-1. M49A2C Discharge Valve Control Lever Wear Limits. ITEM lTEM/POINT OF MEASUREMENT WEAR LIMITS/TOLERANCES NO. INCHES MILLIMETERS 21 Lever arm (inner diameter at shaft hole) 0.443 - 0.463 11.25 - 11.76 14 Lever arm (inner diameter at shaft hole) 0.430 - 0.454 10.92 - 11.53 4 and 28 Levers (inner diameter at shaft hole) 0.868 - 0.922 22.05 - 23.42 10, 24, and 29 Bushings end exposed (diameter) 0.430 - 0.438 10.92 - 11.13 8 Lever shaft (diameter) 0.860 - 0.885 21.84 - 22.48 11 and 18 Roller (outer diameter) 0.750 19.05 11 and 18 Roller (inner diameter) 0.440 - 0.444 11.18 - 11.28 3. Inspect clevis (26) and pin (25) for cracks or pin hole damage. Replace clevis (26) and pin (25) if cracked or pin hole is damaged. 4. Inspect shaft (9) for twists, cracks, or breakage. Replace shaft, (9) if twisted, cracked, or broken. 5. Inspect lever arms (14) and (21) for wear, cracks, or pin hole damage. Refer to table 12-1, M49A2C Discharge Valve Control Lever Wear Limits, for measurements. Replace lever arms (14) and (21) if not within wear limits. 6. Inspect cams (13) and (19) for cracks or broken tabs. Replace cams (13) and (19) if cracked or tabs are broken. 7. Inspect rollers (11) and (18) for flat spots or wear. Refer to table 12-1, M49A2C Discharge Valve Control Lever Wear Limits, for measurements. Replace rollers (11) and (18) if not within wear limits. 8. Inspect brackets (5), (30), and (23) for cracks or damage. Replace brackets (5), (30), and (23) if cracked or damaged. 9. Inspect installed bushings (10), (24), and (29) for grooves or wear. Refer to table 12-1, M49A2C Discharge Valve Control Lever Wear Limits, for measurements. Replace bushings (10), (24), and (29) if not within wear limits. NOTE Perform steps 10 through 12 if bushings or brackets are damaged or not within wear limits. 10. Press bushings (10), (24), and (29) from brackets (5), (23), and (30). 11. Install bushings (10) and (24) in brackets (5) and (23) with press until bushings (10) and (24) ends are flush with inward side surface of brackets (5) and (23). 12. Install bushing (29) in bracket (30) with press until bushing (29) ends extend 0.5 in. (12.7 mm) from bracket (30) sides. 13. Inspect levers (4) and (28) for wear, latch, handle, or rod change. Refer to table 12-1, M49A2C Discharge Valve Control Lever Wear Limits, for measurements. Replace levers (4) and (28) if not within wear limits. 14. Inspect lever shaft (8) for grooves or wear. Refer to table 12-1, M49A2C Discharge Valve Control Lever Wear Limits, for measurements. Replace lever shaft (8) if not within wear limits. 15. Inspect springs (22) and (31) for distorted or broken coils. Replace springs (22) and (31) if distorted or coils are broken. 12-34