SERVICE BULLETIN SB7100

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Parker Hannifin Corporation Aircraft Wheel & Brake 1160 Center Road Avon, Ohio 44011 USA 1-800-BRAKING (272-5464) 440-937-1213  FAX 440-937-5409 SERVICE BULLETIN Initial Release June 15, 2013 Rev A May 25, 2016 SB7100 Page 1 of 9 3070 (40-5) MAIN WHEEL ASSEMBLY - UPGRADE FROM A RIVETED BRAKE DISC TO A THRU BOLT BRAKE DISC CONFIGURATION 1. PLANNING INFORMATION A. APPLICABILITY This Service Bulletin is applicable to the listed Parker Hannifin main wheel assembly installed on the listed Piper Aircraft: Parker Hannifin Part No. Piper Aircraft Model. Serial Number 3070 (40-5) PA-24-180, PA-24-250, PA-24-260 24-1 thru 24-3306 PA-25 25-1 thru 25-1999 B. REASON Product upgrade to remove the riveted brake disc design from the 3070 (40-5) wheel assembly and replace with a thru bolt brake disc configuration. C. DESCRIPTION This document provides the necessary instructions to upgrade the 3070 (40-5) wheel assembly to the thru bolt brake disc configuration. Refer to Figure 1. Note: The main brake assembly will not have to be replaced and is serviceable with the new inner wheel half and brake disc. SERVICE BULLETIN SB7100 Page 2 of 9 Initial Release June 15, 2013 Rev A May 25, 2016 3070 (40-5) MAIN WHEEL ASSEMBLY - UPGRADE FROM A RIVETED BRAKE DISC TO A THRU BOLT BRAKE DISC CONFIGURATION Figure 1 Wheel configuration SERVICE BULLETIN Initial Release June 15, 2013 Rev A May 25, 2016 SB7100 Page 3 of 9 3070 (40-5) MAIN WHEEL ASSEMBLY - UPGRADE FROM A RIVETED BRAKE DISC TO A THRU BOLT BRAKE DISC CONFIGURATION D. COMPLIANCE Optional. Until next tire or disc replacement. E. APPROVAL This service document is approved for support of an FAA TSO-C26 product. F. MANPOWER Estimate. 1 to 2 hours per wheel assembly. G. MATERIAL Refer to paragraph 3. Material Information. H. TOOLING No additional special tooling is required. I. WEIGHT AND BALANCE Neglible. Approximately 0.3 lb (0.136 kg) increase per wheel assembly. J. OTHER PUBLICATIONS AFFECTED AWBPC0001 ................. Parker Hannifin Aircraft Wheel & Brake Product Catalog K. PREVIOUS MODIFICATIONS None. SERVICE BULLETIN SB7100 Page 4 of 9 Initial Release June 15, 2013 Rev A May 25, 2016 3070 (40-5) MAIN WHEEL ASSEMBLY - UPGRADE FROM A RIVETED BRAKE DISC TO A THRU BOLT BRAKE DISC CONFIGURATION 2. ACCOMPLISHMENT INSTRUCTIONS Instructions are per landing gear. All instruction related to aircraft equipment removal and installation shall be in accordance with the Aircraft Maintenance Manual or Owner’s Manual. For wheel assembly maintenance, refer to the following publications, published by Parker Hannifin – Aircraft Wheel and Brake, for disassembly and assembly procedures; service limits, general maintenance guidelines, and applicable related data. Always obtain the latest issue in effect. AWBCMM0001 ................... Component Maintenance Manual, External Design Wheels & Brakes AWBTSG0001 ..................... Technician’s Service Guide Contact Technical Support for additional assistance. Parker Hannifin Corporation Website: www.parker.com Aircraft Wheel & Brake Division E-mail: clevelandwbhelp@parker.com 1160 Center Road Fax: (440) 937-5409 Avon, Ohio 44001 U.S.A. Tel: 1-800-BRAKING (1-800-272-5464) Attn: Technical Services/Hotline A. DISASSEMBLE THE WHEEL ASSEMBLY SAFETY WARNING: DEFLATE THE TIRE. WORKING ON OR NEAR A FULLY INFLATED TIRE CAN BE DANGEROUS. Notes:  The outer wheel half assembly (1) and outer wheel half specific components will be reused.  Discarded items will be replaced with items in 199-587 upgrade kit. (1) Follow Aircraft Maintenance Manual or Owner’s Manual to fully deflate the tire. (2) Loosen the brake back plate assembly tie bolts which fasten the back plate to the brake housing. Remove the back plate and the insulator shim, if so equipped. (3) Remove the axle mounting hardware and slide the wheel/tire assembly off of the axle. (4) Refer to Figure 2 and remove the inner wheel half components as follows: (a) Remove and discard the wheel assembly attaching bolts (7), washers (8), and nuts (9) and separate the inner wheel half assembly from the outer wheel half assembly. Place the outer wheel half assembly and tire to the side. (b) Remove and discard the screws (12) and washers (13) that attach the inner grease seal rings (11) and felt (10) to the inner wheel half. Also, remove and discard the inner grease seal rings (11), and felt (10). (c) Remove and discard the inner bearing cone (6). (d) Remove and discard the inner wheel half assembly (2). Note: The brake disc (3) will be attached to the inner wheel half by rivets (4). SERVICE BULLETIN Initial Release June 15, 2013 Rev A May 25, 2016 SB7100 Page 5 of 9 3070 (40-5) MAIN WHEEL ASSEMBLY - UPGRADE FROM A RIVETED BRAKE DISC TO A THRU BOLT BRAKE DISC CONFIGURATION Figure 2 3070 (40-5) with riveted brake disc configuration SERVICE BULLETIN SB7100 Page 6 of 9 Initial Release June 15, 2013 Rev A May 25, 2016 3070 (40-5) MAIN WHEEL ASSEMBLY - UPGRADE FROM A RIVETED BRAKE DISC TO A THRU BOLT BRAKE DISC CONFIGURATION B. ASSEMBLE THE WHEEL ASSEMBLY Refer to Figure 3 and Section 3.A. Material Requirements. (1) Mount the tire. (a) Prior to mounting, make sure tire is clean. Inspect bead area and wipe it clean with denatured alcohol, followed by soap and water, then dry thoroughly (b) Inflate the inner tube just enough to round it out. (c) Install the inner tube with the yellow strip (or equivalent heavy spot marking) adjacent to the red (light spot) balance dot on the tire. If the tube has no balance mark, place valve adjacent to the balance dot. (d) Install the tire and inner tube on the outer wheel half, inserting the valve stem through the valve hole in the wheel. Place the inner wheel half assembly (2) inside the tire. Align the bolt holes. SAFETY WARNING: FAILURE TO PROPERLY TORQUE THE WHEEL ASSEMBLY BOLTS (6) MAY RESULT IN PREMATURE FAILURE OF THE MATING COMPONENTS OR HARDWARE.