CLEANING AND INSPECTION WARNING Volatile mineral spirits burn easily and fumes can explode. Do not smoke or allow flames nearby when using volatile mineral spirits. Failure to do so may cause serious injury or death to personnel. 1. Clean all gears and shafts thoroughly with mineral spirits and dry with a lint-free rag. 2. Inspect front planetary carrier (1), center planetary carrier (5), rear planetary carrier (7), and center ring gear (11) for indication of wear or overheating, scratches, burrs, breaks, and heavy metal contamination. Replace front planetary carrier (1), center planetary carrier (5), or rear planetary carrier (7) if damaged. 3. Measure clearance between front planetary carrier bushing bore (2) and mating surface on sun gear (3). Replace front planetary carrier (1) if clearance exceeds 0.005 in. (0.13 mm) between bushing (2) and mating surface of sun gear (3). 4. Measure clearance of output shaft bushing (8) on output shaft (9) and main shaft (10). Replace output shaft (9) if clearance exceeds 0.0065 in. (0.165 mm). 5. Inspect sun gears (3), (4), and (6) for wear or overheating, scratches, burrs, breaks, and heavy metal contamination. Replace sun gears (3), (4), or (6), if damaged. 6. Inspect main shaft (10) for wear or damage. Replace main shaft (10), if damaged. 7. Inspect center ring gear (11) for wear or damage. Replace center ring gear (11), if damaged. 1 2 3 4 5 0379 00-4 TM 9-2320-386-24-1-2 0379 00 PLANETARY GEARING MAINTENANCE (Contd)