=, 71 | Citation SERVICE LETTER Ceésna SL650-80-04 TITLE STARTING - 500 HOUR MID-LIFE BEARING REPLACEMENT FOR 9914052-1 (LUCAS. (AEROSPACE PART NUMBER 23080-003 MOD A OR MOD 8) STARTER GENERATORS EFFECTIVITY MODEL SERIAL NUMBERS 650 -0001 and On -7001 and On REASON 4. To impose a requirement to replace bearings installed in 9914052-1 (Lucas Aerospace part number 2080-003 Mod 8) Starter Generators at 500 hour intervals. 2. To transmit Lucas Aerospace Power Equipment Corporation service bulletin 23080-003-24-02 (Revision dated May 15, 1992). 3, To provide an inspection program that will allow Mod 8 starter generators with more than 500 hours to remain in service until a bearing replacement or overhaul can be accomplished NOTE: The inspection program is only for Lucas Aerospace part number 23080-003 Mod B units. The inspection program does not apply to Lucas Aerospace part number 23080-003 Mod A units. 4. To provide information that the Mod C Starter Generators do not require a mid-life bearing replacement. DESCRIPTION Service history indicates that the bearings installed in the 9914052-1 (Lucas Aerospace part number 2080-003 Mod B) starter generators are failing prior to the 1000 hour required overhaul. This service letter imposes a requirement to replace bearings at 500 hour intervals and provides an inspection program that will allow Mod B starter generators with more than 500 hours to remain in service until bearing replacement can be scheduled. The attached Lucas Aerospace service bulletin provides instructions for converting the Cessna Part Number 9914052-1 (Lucas Aerospace part number 23080-003 Mod A or Mod B) Starter Generators to a Mod C configuration. The Mod C configuration incorporates new bearings and identification plate information. COMPLIANCE RECOMMENDED. This service letter should be accomplished during a scheduled maintenance period or phase inspection. Lucas Aerospace recommends that the mid-life bearing replacement be accomplished between 400 and 450 hours, but not to exceed 500 hours, May 18/92 650-80-04 Page 1 of 4 “To oblain satislactory resulls, procedures spectied in this publication must be accomplished in accordance with accepted industry, Iaintonance practices and prevailing government regulations. The Cessna Aircraft Company is not responsible for the quality of work performed in complying win the requirements herein ithe work is accomplished at other than a Cessna-owned Citation Service Center ‘he Cesena Alrcrat Company ita Marking Ovsion, PO. Box 770, Wichita, Kansas 67277, US.A (316) 9414000, Telex 417.970, Tella (16) 948-0008 COPYRIGHT © 1992SERVICE LETTER SL650-80-04 MANPOWER WORK PHASE MAN-HOURS Starter Generator Removal and Installation: Engine 1.0 Cessna Designed APU 5 Bearing Replacement 5 Bearing Inspection 1.5 Per Generator * Refer to the attached Lucas Aerospace service bulletin 23080-003-24-02 (Revision dated May 15, 1992) MATERIAL - Cost and Availability Refer to the attached Lucas Aerospace service bulletin 23080-003-24-02 (Revision dated May 15, 1992). WARRANTY Eligibility: Affected airplanes that were stil within their vendor warranty period on the date of origi nal issue of this service letter Parts: Refer to the attached Lucas Aerospace service bulletin 23080-003-24-02 (Revision dated May 15, 1982). Labor: Authorized Citation Service Facilities may submit a Credit Claim Form for accomplish- ment of this service letter on eligible airplanes, provided the work is completed and the claim submitted by the expiration date shown below. Expiration: January 1, 1994 REFERENCE This service letter supersedes SL650-80-03. Airplanes incorporating SL650-80-03 should comply with this procedure. OTHER PUBLICATIONS AFFECTED Cessna Model 650 Citation IIVVWVII Maintenance Manual May 15/92 650-80-04 Page 2SERVICE LETTER SL650-80-04 ACCOMPLISHMENT INSTRUCTIONS 1. (Refer to the attached Lucas Aerospace service bulletin Figure 2 or Figure 3.) Verify the starter generator(s) are a Mod A or MOD B unit. NOTE: This service letter applies to the engine starter generators and, if applicable, the starter generator for a Cessna designed APU. Effective immediately, the bearings installed in the 9914052-1 (Lucas Aerospace part number 23080- 003 Mod 8) starter generators are to be replaced at 500 hour intervals. Mod B starter generators that have more than 500 Nours in service at the time of the publication of this service letter may remain in service subject to the inspection defined in paragraph 4 of this procedure. NOTE: Mod A starter generators already require a mid-life bearing replacement at 500 hour intervals. The inspection procedure in paragraph 4 may not be used on Mod A starter Generators to exceed the 500 hour mid-life bearing replacement The 500 hour bearing replacement should be accomplished using one of the following three procedures. A. Policy priced exchange units. (1) Order policy priced exchange unit(s) from a Citation Model 650 Authorized Service Facility, Citation Parts Distribution, or Lucas Aerospace Power Equipment Corporation (refer to the attached Lucas Aerospace service bulletin for address information). (2) Upon receipt of the exchange unit(s), remove the old starter generator(s) from the airplane. (Refer to the Maintenance Manual, Chapter 80, Starter-Generator - Maintenance Practices.) (3) Install the exchange unit(s). (Refer to the Maintenance Manual, Chapter 80, Starter- Generator - Maintenance Practices.) (4) Return the removed starter generator(s) to the facility that shipped the exchange unit(s). Forward a completed information data sheet for the starter generator(s). NOTE: The exchange unit(s) are overhauled starter generators incorporating MOD C and do not require a mid-life bearing replacement Overhauling or changing the bearings at mid-life using an authorized Lucas Aerospace repair facility. NOTE: Replacing the bearings at mid-life does not constitute an overhaul. The starter generator will require a complete overhaul at 1000 hours (TSO). (1) Verify the repair facility has Mod C bearings available. If not, refer to the attached Lucas Aerospace service bulletin for information to procure the bearings. (2) Remove the starter generator from the airplane. (Refer to the Maintenance Manual, Chapter 80, Starter-Generator - Maintenance Practices.) (3) Send the starter generator(s) and if required, the bearings to the repair facility (4) Reinstall the starter generator(s). (Refer to the Maintenance Manual, Chapter 80, Starter- Generator - Maintenance Practices.) C. Replacing bearings at mid-life using a repair facility other than an authorized Lucas Aerospace facility. NOTE: Replacing the bearings at mid-life does not constitute_an overhaul. The starter generator will require a complete overhaul at 1000 hours (TSO). (1) Refer to the attached Lucas Aerospace service bulletin for information to procure the bearings. May 15/92 650-80-04 Page 3SERVICE LETTER SL650-80-04 (2) Remove the starter generator from the airplane. (Refer to the Maintenance Manual, Chapter 80, Starter-Generator - Maintenance Practices.) (3) Send the starter generator(s) and bearings to the repair facility. (4) Reinstall the starter generators). (Refer to the Maintenance Manual, Chapter 80, Starter- Generator - Maintenance Practices.) (6) Complete the attached data sheet(s) and forward to Lucas Aerospace. (Refer to the attached Lucas Aerospace service bulletin for address information.) 4, For Mod B units at 500 hours or more, a one time alternate inspection may be performed within 26 flight hours or 30 days, whichever occurs first, in lieu of immediate bearing replacement or overhaul of the starter generator(s). NOTE: This inspection procedure does not apply to Mod A units. A. Remove the starter generator(s). (Refer to the Maintenance Manual, Chapter 80, Starter- Generator - Maintenance Practices.) B. Remove the brush cover and brushes. (Refer to the Lucas Aerospace Component Maintenance Manual for the 23080 Series OC Starter Generators.) C. inspect the bearings. (Refer to the Lucas Aerospace Component Maintenance Manual for the 23080 Series DC Starter Generators.) D. if any audible noise or roughness is detected during the inspection, the unit(s) must have the bearings replaced using one of the procedures in paragraph 3. E. If no noise or roughness is detected, the starter generator may be operated for an additional 25 flight hours. At the end of the 25 flight hours the bearings must be replaced. 5. Make an entry in the airplane logbook to establish when the next starter generator overhaul is due. A. If the starter generator(s) has been overhauled or exchanged, make an entry in the airplane logbook stating that the starter generator(s) have been zero timed. NOTE: The 9914052-1 (Lucas Aerospace part number 23080-003 Mod C) starter generator is a 1000 hour (TBO) item and does not require a mid-life bearing replacement. B. If the starter generator bearings have been replaced at mid-life, make an entry in the airplane logbook stating that only the starter generator bearings have been replaced. NOTE: Replacing the bearings at mid-life does not constitute an overhaul. The starter generator will require a complete overhaul at 1000 hours (TSO). 6. Make an entry in the airplane logbook stating this service letter has been accomplished. Fill out and forward a Maintenance Transaction Report indicating compliance of this service letter and what type of maintenance has been performed on each starter generator to: CESCOM, P. O. Box 7708, Wichita, KS 67277. May 15/92 1650-80-04 Page 4Lucas Aerospace [Lucas Aerospace Power Equipment Corporation SERVICE BULLETIN ELECTRICAL POWER - DC STARTER-GENERATOR - BEARING CHANGE - CONVERSION OF MODEL 23080-003 TO 23080-003 MOD C. Note: This service bulletin supersedes and cancels Service Information Letter 23080-003-01 and Service Bulletin 23080-003-24-01 and supercedes all previous revisions of this bulletin (last revi- sion dated March 3, 1992). LAPEC analysis of field units has shown that the Mod B starter-generator bearings have not pro- duced a consistent 1000 hour service life on the Model 650 aircraft. A new bearing lubricant has been incorporated into the Mod C starter-generator configuration. 1. PLANNING INFORMATION A. Effectivity All Lucas Aerospace Power Equipment Corporation (APEC) (formerly Lear Siegler Power Equipment Corporation) Model 23080-003 Starter-Generators without the letter C stamped in the MOD block on the identification plate (see figures 2 and 3 of this service bulletin). Note: This block is unidentified on Lear Siegler identification plates (see figures 2A and 3A of this service bulletin). B. Reason To improve starter-generator reliability and to reduce cost-of-ownership of the 23080-003 DC Starter- Generator. C. Description This service bulletin provides instructions for converting the 23080-003 DC Starter-Generators to 23080- 003 Mod C. The conversion consists of the replacement of two bearings and marking the nameplate Mod C to indicate the incorporation of the new bearings. D. Compliance Lucas Aerospace Power Equipment Corporation recommends that the modifications described in this service bulletin be accomplished as early as 400 hours, but not later than 500 hours TSN, TSO, or since last bearing change. E. Approval This service bulletin has the approval of Lucas Aerospace Power Equipment Corporation and Cessna Aircraft Company. This service bulletin contains no modification information that revises the approved configuration of the starter-generator and therefore does not require governmental or other regulatory ag- ency approval. F. Manpower An estimated 2.0 manhours, excluding the removal and replacement of the starter-generator from the air- craft, is required to accomplish the modification outlined in this service bulletin. No additional time is red if modification occurs at overhaul. January 31, 1992 23080-003-24-02 Revised May 15, 1992 Page 1 of 8ATT Cw ely (t9 pace Power Equipment Cort SERVICE BULLETIN G. Material Cost and Availability (1) The cost of this bearing change (including general overhaul) or exchange at LAPEC's Factory Service Center, or through the CITATION Parts Distribution Center or an Authorized CITATION MODEL 650 SERVICE FACILITY is $950.00 (2) For those units returned with more than 500 hours, the cost of this bearing change or exchange will bbe $950.00 plus $2.00 per hour for every hour beyond 500 hours. (8) To participate in this special policy bearing change (including general overhaul) or exchange offer, the units must be returned to Lucas Aerospace Power Equipment Corporation, 777 Lena Drive, Au- rora, Ohio 44202, to the CITATION Parts Distribution Center or to an Authorized CITATION MODEL, 650 SERVICE FACILITY. Further, the operator must provide an acceptable, repairable core unit that has no prior electrical or mechanical damage, and a unit that has not been remanufactured by an un- authorized source using unauthorized processes and/or non-LAPEC approved parts or subassembI- jes. (4) Those operators who choose to perform the bearing change themselves rather than having the work performed by the LAPEC Factory Service Center can contact LAPEC’s Customer Support Depart- ment (216/995-1000) or any LAPEC Authorized Repair Station for free bearings. Bearing replacements or overhauls accomplished outside of Lucas Aerospace Power Equipment Corporation's Factory Service Center will be subject to the individual overhaul facilities’ normal warranty policy. NOTE: Bearing replacement only is not considered an overhaul. (©) This special policy price offering will not extend beyond January 1, 1994. H. Tooling Cost and Availability No special tooling is required to accomplish the modification outlined in this service bulletin. |. Weight and Balance Effect on weight: none. Effect on balance: none. J. Electrical Load Data Not affected. K. References Component Maintenance Manual with lilustrated Parts List for the 23080 Series DC Starter-Generators. L. Publications Affected (1) The Component Maintenance Manual with Iilustrated Parts List for the 23080 Series DC Starter- Generators will be revised to reflect the modification outlined in this service bulletin. (2) This service bulletin supersedes and cancels Service Information Letter 23080-003-01 and Service Bulletin 23080-003-24-01 and the previous March 3, 1992 revision to this bulletin. January 31, 1992 23080-003-24-02 Revised May 15, 1992 Page 2 of 8Lucas Aerospace va Lucas Aerospace Power Equipment Cor SERVICE BULLETIN 2, ACCOMPLISHMENT INSTRUCTIONS - OVERHAUL TECHNICIAN Numbers in parentheses () refer totam numbers given in the 23080 Series Component Note tenance Manual with Illustrated Parts List, figure 1. A. Preparation ‘The modification of the 23080-003 DC Starter-Generators outlined in this service bulletin shall be per- formed in a clean, dry area free of cl, dirt, moisture, and other contamination. The starter-generator must be kept clean to ensure the operating effectiveness of the unit. Disassembly Disassemble the 2080-003 DC Starter-Generator to the extent necessary to remove bearings (41 and 46). Discard removed bearings. Cleaning and Inspection (1) Thoroughly clean and inspect all disassembled parts according to instructions in the 23080 Series Component Maintenance Manual. CAUTION: STRICT COMPLIANCE WITH THE INSPECTION SECTION MUST BE OBSERVED WITH REGARD TO BEARING LINER AND ARMATURE BEARING JOURNAL DIMENSIONS. OUT OF TOLERANCE BEARING LINERS OR ARMATURE BEARING JOURNALS, AS WELL AS AN UNBALANCED ARMATURE, MAY LEAD TO PREMATURE BEARING FAIL- URE. (2) The following tolerances are relevant to this service bulletin. SUPPORT, ASSY, (Drive end) (20): ....... . . Liner |.D. must be within 1.8501 to 1.8504 inches END BELL (67): ..... Peer . . . Liner |.D. must be within 1.8501 to 1.8504 inches ARMATURE (43): Bearing joumal O.D. (both ends) . . Armature balance wae . . Must be within 0.7872 to 0.7875 inch i iecesss s+ Within 5 grain inches each end D. Modification Not applicable. Modification occurs upon bearing replacement. E. Assembly CAUTION: THE 03-6010-15 BEARINGS HAVE TWO DIFFERENT SEALS. INSTALL THE BEARINGS WITH THE BROWN SEAL TOWARD THE OUTSIDE OF THE MACHINE, FACING AWAY FROM THE ARMATURE (SEE FIGURE 1). Assemble the starter-generator according to the procedures outlined in the 23080 Series DC Starter- Generator Component Maintenance Manual using new bearings P/N 03-6010-15. F. Testing Test the starter-generator according the procedures outlined in the 23080 Series DC Starter-Generator Component Maintenance Manual. January 31, 1992 23080-003-24-02 Revised May 15, 1992 Page 3 of 8Aw ery) Vid Lucas Aeros SERVICE BULLETIN INSTALLED BEARINGS Power Equipment Corporation BROWN SEAL Figure 1. Orientation of Bearings on Armature G. Reidentification Ifthe letter stamp B is present in the MOD block, X out this letter and stamp the letter C as ‘outlined below. If there is no room in the MOD block to stamp the letter C, procure a new replacement nameplate, copy the information from the old plate to new, remove the old nameplate and attach the replacement nameplate to the starter-generator with four MS21318- 14 drive screws. (1) Insert a stainless steel strip under nameplate to absorb impact and avoid puncture of nameplate. (2) Using a 1/8* letter punch set and a light hammer, stamp the letter C in the MOD block on the starter- generator identification plate (Ref. 23080 Series DC Starter-Generator Component Maintenance Manual, lilustrated Parts List section, figure 1, item 2 and figure 2 or 3 of this service bulletin). Note: This block is unidentified on the Lear Siegler style identification plates. Stamp MOD C in the location indicated. (see figure 2A and 3A of this service bulletin). (8) Using HumiSeal type 1831 (or equivalent) acrylic coating, paint over the C impression on the iden- tification plate. Allow coating to air dry. January 31, 1992 23080-003-24-02 Revised May 15, 1992 Page 4 0f8