INSPECTION AND REPAIR (cont) - TM-5-1940-277-34

STARTER MOTOR REPAIR INSTRUCTIONS (Continued) - TM-5-1940-277-34_233

STARTER MOTOR REPAIR INSTRUCTIONS (Continued) - TM-5-1940-277-34_235

TM-5-1940-277-34 Boat Bridge Erection Twin Jet Aluminum Hull Model USCSBMK1 (1940-01-105-5728) Manual
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TM 5-1940-277-34 STARTER MOTOR REPAIR INSTRUCTIONS (Continued) LOCATION ITEM ACTION REMARKS 14. Springs a. Check for (see chart bending or below) breaking. b. Test for ten- Use spring sion strengths resiliency as follows: tester. c. Replace if outside limits. SPRING COMPRESSED LENGTH TENSION Lock spring (34) 0.375 in (9.53 mm) 1.69 to 1.94 lb (0.765 to 6.878 kg) Recoil spring (14) 1.313 in (33.35 mm) 26.5 to 29.5 lb (12.0 to 13.39 kg) Pinion spring (25) 1.469 in (37.3 mm) 9.81 to 10.19 lb (oil sealed starter) (4.4 to 4.6 kg) Brush spring (11) Raise to height of 6.0 to 7.5 lb installed brush. (2.7 to 3.4 Kg) 15. Armature (22) Commutator (70) a. Clean dirty Use crocus or discolored cloth. surface. b. If badly pitted or grooved replace armature. 16. Armature (22) Armature (69) a. Remove burrs Use honing stone. Shaft in lock ball recesses (71) if necessary. 2-211

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