Service Bulletin
PIPER MALIBU · Service Bulletins
Overview
This service bulletin from Teledyne Continental Motors addresses the replacement of starter adapter shafts for specific engine models used in Piper Malibu aircraft. It outlines compliance requirements, replacement part ordering, and installation instructions.
- Applies to specific engine models: IO-520-BA, IO-520-BB, IO-550-B, TSIO-520BE, TSIO-520UB, TSIO-520LB, TSIO-520WB.
- Replacement starter drive assemblies are available through TCM distributors.
- Installation requires proper torque, alignment, and belt tension.
- Warranty covers compliance actions under TCM Gold Medallion Warranty.
- Installation on TSIO-520-BE does not require engine removal.
- Log book entry is required to document compliance.
Summary written by AI from the source document. Check the original before relying on it. See which parts of Sprinkle are written by AI.
Reference only, not for flight. Use the current approved manual for your aircraft. See terms, section 5.
Document
Source
Copy found at continental.aero. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type ·
- Service Bulletins
- Year ·
- 1988
- File size ·
- 88 KB
- Copy found at ·
- continental.aero
- Language ·
- en
Specifications & performance
Extracted from this document.
Specifications
- Replacement part numbers ·
- P/N 642087A23R, P/N 642087A22R, P/N 642087A24R, P/N 646757A4R
What is the Service Bulletin?
The Service Bulletin is a service bulletins for the PIPER MALIBU, dated 1988.
What year was the Service Bulletin published?
The Service Bulletin — the PIPER MALIBU service bulletins on file — is dated 1988.
Common. More common than 99% of the aircraft models we track.
Most owners only have the POH. Here's the essential set for the PIPER MALIBU.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins on file
- Type Certificate (TCDS)
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In this document
Compliance
As required.
Replacement Parts
Replacement assemblies should be ordered through TCM distributors with specific part numbers for each engine model.
Installation Instructions
The replacement starter drive assembly is shipped without a drive sheave; existing sheave must be reused.
Warranty Information
The action to comply with this service bulletin is covered by the TCM Gold Medallion Warranty, with specific labor hours allowed for installation.
Exceptions
TCM will supply replacement units on an exchange basis at no charge and requires return of exchange parts for credit.
Summary written by AI from the source document. Check the original before relying on it. See which parts of Sprinkle are written by AI.
Safety notes
- Ensure proper torque, alignment, and belt tension during installation.
- Log book entry is mandatory to document compliance.
Summary written by AI from the source document. Check the original before relying on it. See which parts of Sprinkle are written by AI.
Full document text
TELEDYNE CONTINENTAL AIRCRAFT ENGINE TELEDYNE INDUSTRIES, INC. 1988 TELEDYNE CONTINENTAL MOTORS Aircraft Products Division PO Box 90 Mobile Alabama 36601 Member of GAMA General Aviation Manufacturer’s Association service bulletin 4 April 1988 SUBJECT: STARTER ADAPTER SHAFTS (Reference Service Bulletin M87-24) MODELS AFFECTED: IO-520-BA, IO-520-BB, IO-550-B, TSIO-520BE, TSIO-520UB, TSIO-520LB, AND TSIO-520WB Only those new and rebuilt serial numbers that were required to have their compressor drive belts cut in compliance with TCM Service Bulletin M87-24. COMPLIANCE: As required. On December 15, 1987 Teledyne Continental Motors issued Service Bulletin M87-24 requiring the deactivation (cutting the drive belt) of some air conditioning compressors as an interim measure until shaft redesign and testing were completed. TCM has available replacement starter drive assemblies for those engines that required deactivation (cutting the drive belt). The following action is therefore required: 1. Replacement assemblies should be ordered through any Teledyne Continental Motors distributor per the following: ORDER REPLACEMENT FOR ENGINE MODEL STARTER DRIVE ASSEMBLY IO-520-BA, IO-520-BB, AND IO-550-B P/N 642087A23R TSIO-520-LB AND TSIO-520-WB P/N 642087A22R TSIO-520-BE P/N 642087A24R TSIO-520-UB P/N 646757A4R 2. Any new or rebuilt TSIO-520-BE engine used on the Piper Malibu Aircraft and shipped from TCM as a replacement engine in conjunction with compliance to TCM Service Bulletin M87-25 should not order a replacement starter drive assembly. Those engines will have replacement starter drive assemblies shipped directly from the TCM factory. 3. The replacement starter drive assembly is shipped without a drive sheave. You must remove the spacer adjacent to the 12 point lock nut to allow for installation of the drive sheave. Install the drive sheave from your existing unit. Then lubricate the threads of the 12 point lock nut P/N 649924 supplied on the replacement starter drive assembly with clean 50 weight engine oil and torque to 450 to 500 inch pounds. (continued) M88-5 Technical Portions Are FAA Approved 4 April 1988 M88-5 Page 2 4. When the replacement starter adapter assembly is installed the drive sheave and belt should be installed using proper torque, alignment and belt tension per TCM Service Bulletin M88-6 or subsequent revision. 5. Make appropriate log book entry stating compliance to this service bulletin. WARRANTY: The action to comply with this service bulletin is covered by the TCM Gold Medallion Warranty subject to its terms and conditions. Warranty claims may be filed through any TCM distributor. The following exceptions apply: A. TCM will supply replacement units on an exchange basis at no charge to the customer. B. TCM will pay up to five (5) hours labor at posted shop rates to install the replacement unit on the IO-520-BA, IO-520-BB, IO-550-B, TSIO-520- LB, TSIO-520-WB and TSIO-520-UB. Eight (8) hours will be allowed on the TSIO-520-BE. NOTE: Installation of the replacement unit on the Piper Malibu (TSIO-520-BE engine) does not require engine removal. Piper Aircraft Corporation Service Bulletin 876B gives detailed instructions on this subject. C. Exchange parts must be returned to TCM for credit and should accompany the warranty claim for expeditious processing.