Quantcast c.  Inspection and Repair (Contd) - TM-9-2815-225-34P_355

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TM 9-2815-225-34&P 3-51.  AIR COMPRESSOR REPAIR (Contd) LOCATION/ITEM ACTION REMARKS c.  Inspection and Repair (Contd) 34. Springs (9), (12), and (17) Test each spring on a spring Discard any spring not within tester that is capable of limits shown below. very accurate measurements of spring length and load. Approximate Free Length: Unloader Valve Spring (9) ............................................. 1.65 in.  (41.91 mm) Intake Valve Spring (12)....................................................0.5 in.  (12.7 mm) Exhaust Valve Spring (17)............................................. 0.67 in.  (17.02 mm) No.  of Coils: Spring (9) ............................................................................................. 12.0 Spring (12) ........................................................................................... 2.80 Spring (17) .............................................................................................3.0 Wire Diameter: Spring (9) ..................................................................... 0.072 in.  (1.83 mm) Spring (12) ................................................................... 0.062 in.  (1.58 mm) Spring (17) ................................................................... 0.080 in.  (2.03 mm) Working Length: Spring (9) ..................................................................... 0.98 in.  (24.89 mm) Spring (12) ................................................................... 0.280 in.  (7.11 mm) Spring (17) ................................................................... 0.280 in.  (7.11 mm) New Minimum: Spring (9) ..............................................................................18 lb (8.07 kg) Spring (12) ......................................................................... 0.65 lb (0.30 kg) Spring (17) ......................................................................... 8.50 lb (3.86 kg) New Maximum: Spring (9) ..............................................................................22 lb (9.98 kg) Spring (12) ......................................................................... 1.10 lb (0.50 kg) Spring (17) ......................................................................... 10.4 lb (4.72 kg) Wear Limit: Spring (9) ........................................................................... 17.0 lb (7.72 kg) Spring (12) ......................................................................... 0.55 lb (0.25 kg) Spring (17) ...........................................................................8.0 lb (3.63 kg) 35. Crankshaft assembly (41) a.  Inspect for scratches and Discard if damaged. scoring. b.  Using suitable micrometer, Discard if not within limits measure diameter of the shown below. following items: New Minimum: Front Support Journal (53)  ....................................... 1.872 in.  (47.549 mm) Connecting Rod Journal (54) ................................ 1.9345 in.  (49.1363 mm) Rear Coupling Journal (55)  ...................................... 1.872 in.  (47.549 mm) Half Coupling Shaft (56)............................................ 1.003 in.  (25.476 mm) New Maximum: Front Support Journal (53)  ....................................... 1.873 in.  (47.574 mm) Connecting Rod Journal (54) ................................ 1.9355 in.  (49.1617 mm) Rear Coupling Journal (55)  ...................................... 1.873 in.  (47.574 mm) Half Coupling Shaft (56)  ....................................... 1.0035 in.  (25.4889 mm) Wear Limit: Front Support Journal (53)  ....................................... 1.871 in.  (47.523 mm) Connecting Rod Journal (54) ................................ 1.9330 in.  (49.0982 mm) Rear Coupling Journal (55)  ...................................... 1.871 in.  (47.523 mm) 3-324


 


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