ARMY *TM 9-6115-464-34 AIR FORCE TO-35C2-3 ... - Igor Chudov

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ARMY TM 9-6115-464-34AIR FORCE TO 35C2-3-445-2NAVY NAVFAC P-8-624-34b. Removal. Refer to Operator and Unit Maintenance Manual for speed switch removal instructions.NOTETwo different types of switch, one electronic, the other mechanical, are usedinterchangeably in the sets. Determine which type you are removing by referring tofigure 3-15 sheets 1 and 2 and proceed accordingly.c. Disassembly (Electronic Type).(1) Remove screws (1, figure 3-15, sheet 1) to remove rotor assembly (2) from electronics assembly(12).(2) Remove rotor cap (3), cotter pin (4), and rotor (5).(3) Remove retaining rings (6 and 7), bearing (8), shaft (9) and base (10).d. Disassemblv (Mechanical Type)(1) Cut Iockwire on speed switch.(2) Remove screw (1, figure 3-15, sheet 2), Lockwire (2), washer(3), to remove rotor assembly (4)from cap and cover assembly (10).(3) Remove counterweight (5), spacer (6), packing (7), and retaining ring (9) from body assembly (8).e. Cleaning, Inspection, Repair and Assembly (Electronic Type). Refer to figure 3-15, sheet 1.CAUTIONDo not submerge the electronics assembly (12) and base assembly (11) in cleaningsolvent. Failure to observe this caution could result in equipment damage.WARNINGSolvent, Dry Cleaning P-D-680, Type II is flammable and moderately toxic to skin,eyes and respiratory tract. Eye and skin protection required. Good general ventilationis normally adequate. Failure to observe this warning could result in servere personelinjury.(1)(2)(3)(4)(5)(6)Wipe the exterior of the electronics assembly (12) and base assembly (11) with a clean rag, lightlymoistened with solvent P-D-680 Type Il.Clean all other parts with P-D-680 Type II and dry thoroughly.Inspect base, rotor cap, electronics and base assemblies for cracks, corrosion, or other damage.Check rotor and shaft for cracks, corrosion, or other damage.Check the bearing (8) for excessive wear.Replace any worn or defective parts.f. Assembly (Electronic Type)(1) Position base (10, figure 3-15 sheet 1) to install shaft (9), bearing (8), retaining rings (7 and 6).(2) Install rotor (5), cotter pin (4), and rotor cap (3).(3) Install rotor assembly (2), and screws (1) onto electronics assembly (12).g. Cleaning, Inspection, Repair and Assembly (Mechanical Type).Refer to figure 3-15, sheet 2.(1) If either the rotor assembly, the body assembly or the spacer are damaged or defective, replacedefective part.3-32
ARMY TM 9-6115-464-34AIR FORCE TO 35C2-3-445-2NAVY NAVFAC P-8-624-34(2) Refasten with lockwire after readjustment.(h). Assembly (Mechancial Type(1) Position body assembly (8, figure 3-15 sheet 2 ), to install retaining ring (9), packing (7), spacer (6),and counterweight (5).(2) Position cap and cover assembly (10), to install rotor assembly (4), washer (3), and Iockwire (2), andscrew (1).(3) Install lockwire on to speed switch.i. Test Equipment (Electronical Type). The following test equipment will be required to properly test the speedswitch.(1) Tachometer test stand or speed switch tester with 0.187 tach takeoff fitting, capable of operation upto 1225 rpm.(2) 24 Vdc power supply.(3) VOM suitable for measuring continuity and 24 volts dc.(4) Mating connector and cable for MS3102R-18-1P connector.j. Testing (Electronic Type). Refer to figure 3-16, sheet 1 for schematic diagram of pins to be used duringtest, and perform the following procedures.(1) Screw the tachometer fitting onto the test stand.(2) Attach the connector and cable to J37 of the speed switch.(3) Connect 24 volts dc to pins E, G and I with the polarity indicated in the test circuit.(4) Using the VOM, test for the conditions listed below:Element No. 1:Pins A & B . . . . . . . . . . . continuityPins A & C. . . . . . . . . . . open circuitElement No. 2:Pin D . . . . . . . . . . . . . . . 0 volts dc to groundElement No. 3:Pins F & J . . . . . . . . . . . open circuitPin H . . . . . . . . . . . . . . . 24 volts dc to ground(5) Connect the VOM to read continuity between pins A and B.(6) Slowly bring up shaft speed of the tester. At 290 to 310 rpm Element No. 1 should trip causing anopen circuit to appear between pins A and B.(7) After Element 1 has tripped, check with the VOM for continuity between pins A and C.(8) Proper tripping of Element No. 1 is indicated by meeting the conditions of steps (4), (6) and (7).(9) Connect the VOM to read voltage on pin D with respect to ground.(10) Slowly increase the tester shaft speed while monitoring the VOM. When Element No. 2 trips, thereading will go from 0 volts to 24 volts. Trip speed for Element No. 2 (50/60 Hz) is 590 to 610 rpm.Trip speed for Element No. 2 (400 Hz) is 825 to 850 rpm.(11) Continue increasing shaft speed while monitoring pin H for voltage. It should be at 24 volts, droppingto 0 volts when the third element trips. Trip speed for Element No. 3 is 1200 to 1225 rpm.3-33
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Table 1-1. FITS AND TOLERANCES (CON
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(c)(d)(e)Pull all slack from the le
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REPAIR INSTRUCTIONSARMY TM 9-6115-4
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ARMY *TM 9-6115-464-34 AIR FORCE TO-35C2-3 ... - Igor Chudov

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