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and 653906 and earlier (lower) part numbers are not affected by this
Mandatory Service Bulletin (MSB).
Purpose: Identification of TCM engines assembled (new, overhauled, rebuilt, or
repaired) with hydraulic lifters identified by part numbers 657913,
657915, and 657916 and removal of those lifters from service.
Compliance: Before further flight of any aircraft using TCM engine models with serial
numbers listed in Section A, and engines, overhauled, or repaired with
TCM lifters, part number 657913, 657915 or 657916.
Models Affected: All TCM 240, 360, 470, 520 and 550 direct drive engines, GIO 550, and
GTSIO 520 engines. TCM new and rebuilt engines affected are listed in
Section A.
Any field overhauled or repaired engine with TCM lifters 657913, 657915
and 657916 installed. Engine repaired with components obtained since 19
June, 2009 are suspect and must be inspected. Note these lifters are also
used in Cam and Lifter EQ Kits part numbers EQ6994, EQ6995, EQ7002,
EQ7003, EQ7068, EQ7079, EQ7081 EQ7082, EQ7067, EQ7080,
EQ7473, EQ7474, EQ 7071, EQ7072, EQ7073, EQ7074, EQ 7075,
EQ7076, EQ7077, EQ7078, EQ7136, EQ7137.
I. ACTION REQUIRED
For engine serial numbers listed in Section A or engines with full cam and lifter EQ kits
installed, purchased after 19 June 2009:
Procedure
1. Remove all intake lifters according to the Hydraulic Lifter Removal instructions in
Section B. The part numbers are either laser-etched or stamped (Figure 1) on the oil
transfer groove on the lifter body. Inspect each lifter to identify the part number.
Figure 1. Lifter Part Number Identification
Table 1. Lifter Applicability
Affected Engine Series Installed Position Lifter Part Number Suitable Replacement Part Number
Previous New
240 Intake and Exhaust 657916 653906 658027
360 Intake and Exhaust 657916 653906 658027
-470, -520, -550 Intake 657915 653888 or 628488 658026
-470, -520, -550 Exhaust 657913 653877 or 646277 658024
2. If only part number 653888 or 653906 lifters are present, the engine is not affected by
this MSB.
a. Re-install the lifters according to the Hydraulic Lifter Installation instructions in
Section B, leak check, and return the engine to service.
b. Make an engine logbook entry indicating “MSB09-8 inspection complied with.
No TCM Part No. 657913, 657915, or 657916 lifters installed on engine.”
ISSUE DATE REVISION DATE PAGE NO REVISION
2 of 20
03 Nov 2009 TM
PO BOX 90, Mobile, AL 36601 251-438-3411 MSB09-8
©2009, TELEDYNE CONTINENTAL MOTORS, INC.
ISSUE DATE REVISION DATE PAGE NO REVISION
3 of 20
03 Nov 2009 TM
PO BOX 90, Mobile, AL 36601 251-438-3411 MSB09-8
©2009, TELEDYNE CONTINENTAL MOTORS, INC.
3. If 657915 or 657916 lifters are found, proceed to Step 2.
For engines that have been repaired or overhauled using part number 657913, 657915, or
657916 lifters:
Procedure
1. Determine location of and number of lifters installed. If the location cannot be
determined, all lifters must be removed for verification according to instructions in
Section B.
2. If 657913, 657915 or 657916 lifters are verified, proceed to Step 2.
Step 2.
For any engine with 657913, 657915, or 657916 lifters installed:
Procedure
1. Remove intake lifters only for any engine listed in Section A that does not have an
“EX” in the column next to the Serial number. For those engines with an “EX” beside
the serial number, both intake and exhaust lifters should be removed for inspection.
For engines repaired or overhauled in the field, remove all lifters for examination
according to the Hydraulic Lifter Removal instructions in Section B.
2. Compare the face condition to the photographs in the Comparison Photos section.
a. If no indications similar to the abnormal condition photos are found:
1) Replace the lifters according to the Hydraulic Lifter Installation instructions
in Section B with new or serviceable lifters of TCM part numbers 628488,
646277, 653877, 653888, 653906 or 658024, 658026, 658027 lifters, (as
applicable to the engine model), leak check, and return the engine to
service.
2) Complete the Lifter Return Form on page 20 and contact TCM Customer
Service at the phone number listed on page 7 to obtain a return authorization.
Drain the oil from the lifters and pack each lifter individually in a zip lock
bag, identifying the cylinder position and engine serial number from which
the lifter was removed on the outside of the bag. Pack the individually
bagged lifters in a larger zip lock bag identified with the engine serial
number on the outside bag. Submit the completed Lifter Return Form on
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