Figure 4-32. Starter Motor Assembly

MAINTENANCE OF AIR CONTROL BOX DISCONNECT SWITCH OP3

TM-9-6115-604-12 Generator Set Diesel Engine Driven Tactical Skid Rtd. 60 Kw 3 Phase 4 Wire 120/208 and 240/416 Volts Manual
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ARMY TM 9-6115-604-12 NAVY NAVFAC P-8-633-12 b. Remove. See figure 3-3. (1) Tag and disconnect electrical connection from switch. (2) Remove switch from tee c. Install. (1) Screw In switch and Install electrical connection as tagged (2) Run the engine and check for leakage around switch, tighten as necessary. 4 33. MAINTENANCE OF STARTER MOTORS 81 AND B2 AND ELECTRICAL SOLENOIDS B1L3 AND B2L4. Starter motors are used to rotate engine until combustion occurs. To avoid death or injury to personnel, no electrical component will be worked on while energized. Ensure equipment is "tagged out" in accordance with Chapter 1, Section III of this manual and equipment is NOT energized. Residual voltage is present at the generator leads with the regulator turned off, reaching SEVERAL HUNDRED VOLTS on the generator set. Proper insulation and isolation of metering equipment must be observed when testing this generator. USE PROPER TEST EQUIPMENT TO CHECK FOR VOLTAGE before proceeding with work. a. Remove. See figure 4-32. (1) Disconnect battery power. (2) Tag and disconnect wiring from electrical solenoids L3 and L4 (1) and starter motors B1 and B2, and starter slave relays K1 and K2. Figure 4-32. Starter Motor Assembly (3) Remove starter motors from flywheel housing by removing machine bolts, washers, and lock washers. Remove bottom starter first to gain access to starter bolts. Starter slave relays K1 and/or K2 will also come free with their brackets. b. Test. Testing of the starter motor and electrical solenoid assembly consists of a no-load test of the complete unit followed by a pinion clearance check and adjustment. Before conducting the no-load test check the armature for freedom of rotation. Use a screw driver to turn the pinion on the exposed drive assembly in the drive housing. Tight bearings bent armature shaft, or a loose pole shoe screw will cause armature binding. If the armature does not turn freely, replace the starter. If the armature rotates freely, conduct the no-load test below. 4-88

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