TIME OF COMPLIANCE: At owner s discretion or when part replacement is necessary.

Transcription

1 52 Oliver Street Williamsport, PA. 770 U.S.A. Telephone + (877) (U.S. and Canada) Telephone + (570) (International) Fax + (570) Technicalsupport@lycoming.com SERVICE INSTRUCTION DATE: March 2, 209 Service Instruction No. 45A (Supersedes Service Instruction No. 45) Engineering Aspects are FAA Approved SUBJECT: MODELS AFFECTED: New Turbocharger Mounting Hardware TO-30-C and -F series engines TIME OF COMPLIANCE: At owner s discretion or when part replacement is necessary. REASON FOR REVISION: Revision A is being released to update the P/N of the strut assembly and various hardware P/N s a with reformatting of the service instruction. NOTICE: Incomplete review of all the information in this document can cause errors. Read the entire Service Instruction to make sure you have a complete understanding of the requirements. This Service Instruction identifies a new mount assembly P/N LW-805, a new one-piece turbocharger bracket P/N LW-757 and adjustable strut assembly P/N 07F2347 that are to be installed on TO-30-C and -F series engines. The new bracket and strut arrangement will install at the same locations on the crankcase and accessory housing as the original mount system. Each individual bracket, strut, or mount assembly from this new system are compatible with the part or parts installed on the original mounting system. The new parts replace the superseded parts identified in Table. The new bracket and strut are adapted for all engines identified in this Service Instruction. This new mounting arrangement gives a more stable mount and includes an adjustable strut for improved alignment of the mounting components. Installation instructions for the new parts also are included herein. Table Superseded Parts Superseded Parts New Replacement Parts Part Name Part Number Part Name Part Number Compressor Inlet Mount Compressor Inlet Mount LW-39 LW-805 Assembly Assembly Turbocharger Bracket LW-5770 Turbocharger Bracket LW-757 Strut Assembly LW-807 Strut Assembly 07F2347 of 5 A 209 Avco Corporation. All Rights Reserved. Lycoming Engines, is a division of Avco Corporation.

2 Installation Instructions All the components and attaching parts must be installed as shown in Figure. Parts from the original mounting system that are to be used with the new mounting arrangement are in Table 2.. Remove and discard the mount assembly P/N LW Install new mount assembly. 3. Install all mounting components. 4. Install all attaching parts. 5. Torque the mounting hardware as per the torque values in the latest revision of SSP-77 Table of Limits.. Adjust the new strut assembly P/N 07F2347 to a no-load condition. 7. Safety the screws P/N STD-82 used to attach the mount assembly P/N LW-805 and the gasket P/N LW-347 to the compressor inlet of the turbocharger unit. The screws can be safety wired in sets of 3 or all can be safety wired together. 2 of 5 A

3 NOTE: See parts legend on next page. Figure New Turbocharger Mounting Components and Related Parts 3 of 5 A

4 FIG. REF. PART NUMBER LEGEND FOR FIGURE DESCRIPTION QTY PER ASSY Where Used *LW-757 BRACKET, Turbo 2 *LW-70 SPOOL, turbo 2 Attach P/N LW-757 bracket to turbo 3 *LW-3SS-2.50 BOLT, x *STD-2043 NUT,.325-8, self-locking STD-8 STD-0 STD-4 *LW WASHER,.250 plain NUT,.250 -plain BOLT, x STD-35 STD-475 WASHER,.325 plain WASHER,.325 internal lock STD-40 NUT, plain 2 LW-3-. BOLT, x. 3 *LW-805 MOUNT ASSEMBLY 4 LW-347 GASKET Attach P/N LW-757 bracket to sump flange Attach P/N LW-757 bracket to crankcase 5 STD-28 STD-82 WASHER, No. 0 plain SCREW, No x.50 drilled Attach P/N LW-805 mount and P/N LW-347 gasket to turbo 7 LW-3957 STRUT, Turbocharger 8 9 STD-0 LW BOLT, x.50 Attach P/N LW-3957to P/N LW-347 or P/N LW STD-4 NUT,.250 plain 2 **LW-592 BUSHING, Turbocharger mount 2 22 STD-475 WASHER,.325 internal lock Attach P/N LW-3957to sump 23 LW-3-.3 BOLT, x.3 24 *07F2347 STRUT ASSEMBLY 25 2 *07F234 *LW-803 STRUT SUPPORT These parts assemble to make P/N 07F *STD-59 NUT, plain STD-0 STD-4 NUT, plain Attach P/N 07F2347 to P/N LW-347 or P/N LW *STD-220 WASHER,.250 plain 2 3 *LW BOLT, x **LW-592 BUSHING, Turbo mount 2 33 LW-5555 SPACER See Service Bulletin No LW-399 SUPPORT, Linkage control 35 3 *LW-759 STD-0 SPACER, Support linkage control 2 2 Attach P/N LW-399 support to P/N LW-757 bracket 37 *STD-8 SCREW, x.3, hex hd STD-9 NUT,.250 x 28 plain 2 39 *LW-344 CLAMP, 3-/ diameter 2 Attach exhaust system and tail pipe to turbocharger * These are new parts or parts not included in the original mounting system. ** These parts are included with P/N LW-805 Mount Assembly. 4 of 5 A

5 TABLE 2 PARTS DATA Parts to Be Used with the New Mounting Arrangement Part Number Description Where Used Replaced By Description Fig. Ref. LW-395 Strut - Turbocharger Attach P/N LW-579 to LW-757 Bracket-Turbocharger sump flange LW-3958 Strut - Turbocharger Attach P/N LW-579 to crankcase LW-757 Bracket-Turbocharger LW-3959 Strut - Turbocharger Attach P/N LW-39 to vac pump 07F2347 Strut Assy.-Turbocharger 24 LW-579 Mount Assembly - Attach to exhaust flange of LW-757 Bracket-Turbocharger Bracket Turbo Outlet turbocharger AN Screw x.3 Attach P/N LW-399 to P/N LW-579 STD-8 Screw x.3 37 STD-838 Bolt x.94 Attach P/N LW-407 baffle to turbocharger LW-3SS-2.50 Bolt x 2.50 Long Hex 3 STD-885 Bolt x.4 Attach P/N LW-395 to LW Bolt x sump flange Long Hex ***LW-39 Mount Assembly- Turbocharger Comp Inlet Attach to intake flange of turbocharger LW-805 Mount Assy.- Turbocharger Comp Inlet 3 *** P/N LW-39 is not adaptable to all engine installations, and availability of this mount assembly is being discontinued. Do not install a P/N LW-39 mount assembly on any installation originally assembled with a P/N LW-805 mount assembly. 5 of 5 A