Wiring Diagram for Beechcraft 56TC Baron

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MAINTENANANCE INFORMATION AND ILLUSTRATED PARTS BREAKDOWN for LANDING GEAR MOTOR Part Number 96-380022 (Lamb Electric Co. P/N 14818) used on BEECHCRAFT BARON 55, 56TC, 58 and 58P DUKE 60 TRAVEL AIR 95 PUBLISHED BY COMMERCIAL PUBLICATIONS BEECH AIRCRAFT CORPORATION WICHITA, KANSAS 67201 P/N 98-35798B Reissued: November 15, 1985 PUBLISHED BY COMMERCIAL PUBLICATIONS BEECH AIRCRAFT CORPORATION WICHITA, KANSAS 67201 U. S. A. Beechcraft A Raytheon Company Member of GAMA General Aviation Manufacturers Association MAINTENANCE INFORMATION AND ILLUSTRATED PARTS BREAKDOWN for LANDING GEAR MOTOR P/N 96-380022 Disassembly (See illustration for index numbers) 1. Remove the 2 nuts (2) which are located on the end bracket (12). This will permit removal of the two end brackets and the armature assembly (16) from the field assembly (15). Do not disconnect wiring between commutator end bracket (13) and field assembly (15) unless necessary for future checking and/or repairs. 2. Loosen the 2 set screws (5) in the commutator end bracket (13) and remove brush and spring assembly (17). 3. Remove bearings (3) and (4) from armature shaft. Cleaning 1. Clean all parts, except sealed bearings, with PD680 solvent or equivalent. 2. Do not leave armature or coil of motor in solvent (permissible to immerse and remove immediately). 3. Dry all parts prior to reassembly. Inspection Inspect all parts and scrap those that are nonrepairable. Rejection The specific conditions listed below are cause for rejection. 1. Wear which is greater than the allowable wear tolerances given. 2. Damage which cannot be corrected by one or more of the authorized repairs listed in this manual. 3. Armature assemblies that have shafts that are heavily scored, or that are worn to the extent that bearings are loose on the shaft, or that have loose commutator segments. 4. Armature assemblies and field coils which have cracked, burned, or excessively worn insulation. 5. All screw that are severely damaged or have stripped, excessively worn or scored threads. 6. All gears on which teeth are severely worn. 7. Parts that are cracked, chipped, or broken. 8. Parts that have corrosion or other defects that cannot be repaired within the requirements of this manual. Repair and Reconditioning Recondition and make necessary repairs as follows: Retape or replace wiring that extends outside of the motor case if dirty or discolored. Do not disassemble more than necessary for complete check and reconditioning as follows: - 1 1. 13981 A Armature 2A 2B 3. 4. 30-7623 and 20-7609 Open Bearings (may be relubricated) 30-7625 and 20-7639 Sealed Bear- ings 14818F Field Coil Assembly 33107-A Brush Holder Assembly 5. 0-6864 End Bracket *0-6865 Visually inspect for excessive wear or damage. If noticeable step is worn on involute surface of gear end of shaft, replace armature. Check armature with "growler" for short circuit. If there is a short or open circuit, replace with new or rebuilt armature. If armature tests satisfactorily, recut surface of commutator (if burned, pitted, or uneven) until it is smooth, then regroove. Minimum acceptable diameter of commutator shall be .968 (31/32). The teeth of the armature gear shall not show severe wear or damage. With bearing clean and dry, rotate race by hand and feel for roughness, side-play and end-play; if noticeably greater than that of a new bearing, scrap and replace. Perform a magnetic particle inspection per MIL-I-6868. Install new bearings because the condition of sealed bearings cannot be determined. Visually inspect coils, poles, and housing for severe wear or damage. Replace any part as necessary. Using a "Hi-Pot” tester, check for high potential shorts by applying 500 volts of single phase, 60 cycle alternating current between the field coil wiring and housing for 5 to 15 seconds duration. No breakdown is permissible. Perform tests for continuity. Do not disassemble further unless damaged, or a short or open circuit is indicated, then disassemble only as necessary to repair. Visually inspect brush plugs, insulator and brush holder for severe wear or damage. Visually inspect end bracket for severe wear or damage. *NOTE: Do not disassemble from field coil assembly (4) unless necessary for further testing, rework, or replacement. 6. Visually inspect the following parts. Reuse all that show no severe wear or damage. 2 7978 10-7822 Set Screw 10-7888 Stud 7469 Nut 0-3518 8058 0-3883 0-3896 Load Spring Drive Pin Cord Bushing 39109-A Lead and Clip Assembly P-O-750 Таре YX10-1 Connector 106242-3-00014 Insulator MS20659-5 Terminal 0-2497 Washer 10-4431 Disc 5705 Screw 8047 Name Plate New Parts Required Parts Not To Be Reused - To Be Supplied New (2) 35175-A (2) MS24665-138 Brush Assem. Cotter Pin Authorized Repairs. These are in addition to the specific repairs noted in Repair and Reconditiong. 1. Slight scoring of shafts may be corrected by lapping carefully with a flat oil stone. 2. Smooth minor nicks, burrs and scratches. 3. Strip and replate, with same type plating as removed, those parts that are scratched or worn through the plating. 4. Chase the threads to clean or smooth minor thread damage. 5. Remove all corrosion. 6. Replace severely damaged or unserviceable parts with new or serviceable parts. 7. Revarnish all wiring as needed. 8. Bushings that check within dimensional range of a new part may be reused. Reassembly (See illustration for index numbers) Replace all scrapped parts with new or serviceable parts. 1. Repack all bearings* with MIL-G-23827 grease. Install needle bearings (7) in end bracket (13). Place bearings on armature shaft. NOTE: The bearing opposite the gear end shall be placed on the shaft in such a way that the shield faces inside of the motor. The needle bearing is to be installed with open end facing the outside of the motor. 2. Place new brush assembly and brush holder in the commutator end bracket. Paint around the brush