CSB94-15 - Continental Motors
Contents
1. 270490 R 270493 R 270495 R thru R 285829 R 285831 R thru 285834 270499 R 294501 R 294504 R 294506 285836 R thru 285838 R 285840 R thru R 294509 R 294514 R thru 294521 R 285842 R 285844 285846 R 285849 10 520 270872 R 270873 R 270876 R 270880 R R thru 270882 R 270884 R thru 270891 R 10 520 C 287233 R thru 287235 R 287239 R thru 10 520 MB 277486 thru 277494 R 10 550 280363 R thru 280366 SMEs 05508 281937 R 281940 R 281942 R 281943 281946 R 281947 R 281949 R thru i 281966 R 281968 R thru 281970 R 10 550 271872 271873 R 271879 R thru 271882 R 271884 R thru 271888 R 10 550 0 284074 R 284076 R thru 284082 R 284084 R thru 284089 R 284091 R thru 284093 R 284095 R thru 284098 R 10 550 283289 R 283290 R 283293 R thru 283298 10 550 284591 R thru 284598 R 284600 R ISSUED REVISED 284602 R TELEDYNE CONTINENTAL MOTORS Box 90 MOBILE ALABAMA 36601 20f8 334 438 3411 12 o2 94 PAGE NO REVISION REBUILT ENGINES cont d MODELS SERIAL NUMBER MODELS SERIAL NUMBER 10 550 L 289031 R thru 289037 R TSIO 520 P 278672 R thru 278674 R 278677 R thru TSIO 520 AF 245224 R 278680 R TSIO 520 B 176634 R 176636 R 176637 R 176640 TSIO 520 R 269989 R 269992 R 269994 R 269996 R R2. R 293025 R 293027 R 293028 288223 R 288226 R thru 288230 R R 293030 R thru 293036 R 293038 R thru 293042 R 293044 R thru 293046 R 0 470 U 286822 R 286823 R 286825 R 286829 R ceo pp MIU thru 286831 R 286833 R thru 286839 R 286844 R thru 286847 R 10 520 215813 Y f 10 520 291191 R thru 291193 R 291195 R thru 10 470 C 242149 R 295501 295503 R SHOR S OSTA 10 470 088747 291102 R 291106 R 291109 R thru 10 470 089849 R thru 089853 291111 R 291113 R 291115 R 291118 10 470 092942 R 092943 R 291120 R 291122 R thru 291125 R 10 470 096588 R thru 096594 R 096596 R thru 291128 R 291133 R 291134 R 291136 096598 R 291137 R 291139 R 291141 R 291146 R thru 291148 R 291150 R thru 103990 R 109952 291152 R 291154 R 291157 R 291158 10 470 171084 R 171087 R 171088 171091 291160 R 291161 2911636 171092 R 171094 R thru 171097 291165 R thru 291167 R 291169 R thru 10 520 112706 R 112710 R 112711 R 112713 291171 R 291174 R 291176 R thru 112716 R 291178 R 291180 R thru 291184 R 10 520 234764 291186 R thru 291188 R 291190 R 10 520 280941 R 280944 R 280950 R thru 10 520 224082 R 224084 R 224085 R 280955 R 280957 R thru 280961 R 10 520 L 270478 R 270479 R 270482 R 270484 280964 R thru 280969 R R 270485 R 270487 R 270488 R 10 520 285821 R 285822 R 285826 R 285828
3. thru 269999 R 293503 R 293504 R TSIO 520 BB 287529 thru 287533 R LE TSIO 520 T 239398 R thru 239402 R 239404 R ET a TSIO 520 UB 249040 thru 249042 R EU ER BOGS OO RIN TSIO 520 VB 290240 R 290242 R 290245 R thru 290248 R 290250 R thru 290252 R TSIO 520 DB 242012 R 290254 R 290255 R 290257 R 290260 R TSIO 520 E 275325 275327 275328 R 275331 R thru 290265 R 290267 R thru 275334 R 275336 275337 R TSIO 520 WB 274286 R thru 274291 R 274293 R TSIO 520 EB 271284 R thru 271286 274294 R TSIO 520 G 216045 GTSIO 520 D 219460 R TSIO 520 H 217306 R 217310 R 217312 R thru GTSIO 520 H 267313 R 267314 R 267317 R 267320 217314 R 217316 R R TSIO 520 J 218963 R 218964 R GTSIO 520 L 292009 R 292019 R 292022 R thru TSIO 520 LB 237280 R 292024 R TSIO 520 M 291536 R 291537 R 291540 R thru GTSIO 520 M 276380 R thru 276385 R 276388 R thru 291542 R 291545 R 291547 R 291548 276390 R 276392 R 276415 R 291550 R thru 291553 R 291555 R thru GTSIO 520 N 277171 R thru 277174 R 277176 R 291564 R 291566 R 291567 R 291570 R 277177 291575 291578 TSIO 520 N 228612 R thru 228614 R TSIO 520 NB 290647 R 290649 R thru 290652 R 290655 290657 thru 290665 290670 2 All affected number and serial number service replacement crankcases listed below must comply with the instructions set forth in this b
4. 11 12 02 9 TABLE 2 STUD KIT CONTENTS The kits listed in Table 2 will in most cases contain more studs and gaskets than are necessary to comply with the instructions set forth in this bulletin This was necessary to consolidate a large number of crankcase studding differences into a smaller number of kits Make certain that the studs removed are replaced with studs of the same length and the proper gaskets are used PART NUMBER DESCRIPTION EQ6649 Stud Kit includes the following 401968P007 Stud 4 53 401936P007 Stud 3 88 401962P007 Stud 2 19 401801P007 Stud 1 19 401804P007 1 06 401963P007 1 00 649949 Gasket oil pump 653415 Gasket cam cover 1 4 20 GH7 Bottom Tap PART NUMBER DESCRIPTION EQ6651 Stud Kit includes the following 402056P007 Stud 3 56 401886P007 Stud 3 19 401832P007 Stud 2 81 402129P007 Stud 2 75 401852P007 Stud 1 41 401870P007 Stud 1 12 649969 Gasket oil pump with screen housing 653387 Gasket oil pump with integral filter adapter 1 4 20 EQ6650 Stud Kit includes the following 402165P007 Stud 6 91 402161P007 Stud 6 81 402129P007 Stud 2 75 401852P007 Stud 1 41 401804P007 Stud 1 06 401963P007 Stud 1 00 649969 Gasket oil pump 653415 Gasket cam cover 653388 Gasket reduction gear cover 1 4
5. 20 GH7 Bottom Tap EQ6652 Stud Kit includes the following 402157P007 Stud 6 10 402158P007 Stud 4 40 402159P007 Stud 4 10 401832P007 Stud 2 81 402129P007 Stud 2 75 401841P007 Stud 2 09 2 401852P007 1 41 401870P007 Stud 1 12 649969 Gasket oil pump with screen housing 653387 Gasket oil pump with integral filter adapter 1 4 20 GH7 Bottom Tap ow Warranty action required to comply with this bulletin is covered by the Gold Medallion Warranty subject to its terms and conditions Warranty claims may be filed through any TCM Distributor MAN HOURS REQUIRED Inspection only 2 Hours per engine maximum Stud replacement Average time 39 hours However most includes engine removal installations will require less time 490 TELEDYNE CONTINENTAL MOTORS MO DAY YEAR DAY Box 90 MOBILE ALABAMA 36601 6 of 8 334 438 3411 19 302 5 9 e E a 2 N N Pu N FIGURE 1 250 28 STUD LOCATIONS ETC siat NUMBER 3 DRILL SHANK 210 DIAMETER 212 ACCEPTABLE NOT ACCEPTABLE FIGURE 2 INSPECTING 250 20 TAPPED HOLES 250 28 THREAD 2 250 20 THREAD FIGURE 3 OVERSIZE STUD IDENTIFICATION ZR
6. S SERIAL NUMBER O 470 R 446717 10 550 679074 thru 679077 679086 10 470 L 468588 TSIO 520 BB 526042 10 520 578974 578976 thru 578981 TSIO 520 C 501629 10 520 556628 556629 TSIO 520 CE 530161 530162 10 520 579215 TSIO 520 M 532021 thru 532024 10 520 557546 TSIO 520 NB 521654 10 550 675898 thru 675917 675957 682136 TSIO 520 R 522670 522671 thru 682138 682140 thru 682142 TSIO 520 UB 527202 527204 thru 527208 527217 682153 527218 10 550 676751 thru 676755 676761 thru TSIO 550 B 802053 thru 802056 Seen Toro ue 10 550 D 680009 10 550 681026 681027 9 TELEDYNE CONTINENTAL MOTORS REVISION MO DAY YEAR DAY E P O Box 90 MOBILE ALABAMA 36601 1 of 8 334 438 3411 02 p 9 S REBUILT ENGINE MODELS SERIAL NUMBER MODELS SERIAL NUMBER 0 470 J 202183 R 10 520 282436 R 282438 R thru 282445 R 0 470 049458 R thru 049462 R 282447 thru 282453 R 282456 R thru O 470 L 069790 R 069791 R 069797 R 282463 282470 R 282471 0 470 R 288195 R 288196 R 288200 R 288201 10 520 D 282992 R 282999 293002 thru 293006 R 293008 R 293009 R 293012 R 288204 R 288206 R thru 288208 R R 293013 R 293016 R thru 293020 R 288211 R thru 288214 R 288219 R 293024
7. TELEDYNE CONTINENTAL AIRCRAFT ENGINE CRITICAL SERVICE BULLETIN CSB94 15 Compliance Necessary To Maintain Safety FAA APPROVED SUBJECT CRANKCASE STUD INSPECTION PURPOSE TCM Quality Control has identified crankcases that had certain 250 20 stud mounting holes drilled slightly oversize prior to tapping This can produce a stud thread fit that may allow the crankcase threads to strip when sufficient torque is applied The following procedure provides inspection instructions to determine if the 250 20 tapped holes in the front and rear of the crankcase are oversize Oversize holes will require the installation of an 007 oversize stud kit in accordance with the instructions set forth in this bulletin WARNING Inadequate stud thread engagement may result in the loss of stud preload torque allowing accessories and or related components to become loose Such conditions could result in loss of engine oil and or engine failure COMPLIANCE Within the next 25 hours of operation or six months from the date of issuance of this bulletin MODELS AFFECTED O 470 10 470 10 520 10 550 TSIO 520 TSIO 550 TSIOL 550 and GTSIO 520 model engines listed below and these engine models that contain affected service replacement crankcases 1 All engines listed below must comply with the instructions set forth in this bulletin NEW ENGINE MODELS SERIAL NUMBER MODEL
8. TELEDYNE CONTINENTAL MOTORS P O Box 90 MOBILE ALABAMA 36601 8 of 8 11
9. Y P O Box 90 MOBILE ALABAMA 36601 4 of 8 334 438 3411 12 02 9 Figure 3 Use a 250 28 stud driver and install the appropriate length studs in their proper locations to the recorded extension heights Allow at least 30 minutes for the Loctite to cure prior to component installation Stamp the letters OS on each side of the crankcase split line using a 1 8 metal stamp See Figure 1 for approximate location 11 Install the oil pump prop reduction gear cover GTSIO 520 models only and cam cover using new gaskets and attaching hardware Torque 250 28 nuts to 90 110 inch pounds Install the remaining components that were removed and torque to the proper values 12 Install the engine in accordance with the airframe manufacturer s service manual Run the engine to check for oil leaks Repair any leaks prior to flight 13 Perform normal pre flight inspections and engine instrument parameter checks in accordance with the aircraft manufacturer s pilot s operating handbook in preparation for flight Fly the aircraft for one hour 14 While the engine is warm from flight drain the engine oil and remove the oil filter or screen Examine the contents of the filter screen Residual material aluminum that may not have been completely removed after the tapping operation will be contained in the filter screen 15 Remove inspect and replace clean the oil filter screen within the next 5 hours of engine operation If the
10. er of the shank must measure 210 212 Insert the shank end of the drill bit into the tapped 250 20 hole The shank should not extend into the tapped portion of the hole If it does not reinstall the two studs to the recorded height using Loctite Primer N and 271 Stud Lock Allow at least 30 minutes for the Loctite to cure prior to the installation of the idler gear pin attaching hardware Torque nuts to 90 110 inch pounds Make a log book entry as to compliance with this service bulletin as no further action is required If the shank of the drill bit extends into the tapped portion of the hole proceed as follows 5 Refer to Table 1 and order the appropriate stud kit Aircraft owner FBO information must be provided to the TCM Distributor at the time the order is placed for tracking and warranty purposes The TCM Distributor will forward this information to This information must include aircraft registration and serial number make and model Engine model and serial number s owner and FBO name address and fax phone number 6 Remove the engine from the aircraft in accordance with the applicable airframe manufacturer s service manual This is necessary so that the oil pump can be removed and the 250 20 through studs in the crankcase can be replaced with oversize studs T Remove the starter starter adapter assembly as necessary to remove oil pump and oil pump and discard the gaskets Remove the cam cover plate and prop reduc
11. filter screen is free of material then resume normal oil and filter change intervals If the filter screen continues to contain metal particles contact TCM Service Department at 205 438 3411 16 Make a log book entry as to compliance with this service bulletin TABLE 1 KIT PART NUMBER TO ENGINE GUIDE Determine which kit is appropriate for your engine model as listed in Table 1 This is accomplished by noting the engine model and specification number on the engine data plate Example 10 520 035 IO 520 D Engine Model 35 Specification Number Engine models listed below without specification numbers are considered to cover all model specifications unless noted otherwise Review Table 1 carefully to insure that you order the appropriate kit for your specific engine model PART NUMBER ENGINE MODEL EQ6649 10 520 10 550 TSIO 520 B BB BE D DB E EB J JB K KB L LB N NB UB VB WB TSIO 550 A B C TSIOL 550 A EQ6650 All GTSIO 520 Model Engines EQ6651 O 470 G J L M R S U 0 470 C D E F J K L M N S V U EQ6652 O 470 U12 25 29 33 36 40 IO 520 A D E F J K L lO 550 D F L TSIO 520 AE AF C CE G H M P R T LTSIO 520 AE 490 TELEDYNE CONTINENTAL MOTORS MO DAY YEAR DAY Box 90 MOBILE ALABAMA 36601 5 of 8 334 438 34
12. tion gear cover GTSIO 520 models only located on the front of the crankcase below the crankshaft and discard gaskets DO NOT remove the idler gear support pin 8 Measure all of the 250 stud extension heights and record their locations See Figure 1 This is necessary for proper installation of the replacement studs Remove all 250 28 studs from the front and rear of the crankcase using an appropriate stud removal tool and record their lengths as they are removed so that the same length stud is installed in the same location Discard the old studs 9 Add a small amount of clean grease to the 1 4 20 GH7 tap supplied in the stud kit to prevent aluminum material generated during tapping from entering the engine Run the 1 4 20 GH7 tap into and then out of each 250 stud hole location except the idler gear pin stud holes indicated in Figure 1 Thoroughly clean grease and debris from the stud holes by saturating a clean cloth with Loctite Primer N and cleaning each hole until threads are clean Final cleaning and preparation of the threads is accomplished by spraying a light film of Loctite Primer N into the stud holes 10 Using the studs contained in the appropriate kit listed in Table 1 apply a line of Loctite 271 along the 250 20 threads of the studs These studs are 007 oversize and are identified by being blue in color and a L shaped stamp on the 250 28 end See 490 TELEDYNE CONTINENTAL MOTORS MO DAY YEAR DA
13. ulletin These crankcases were manufactured between February 1 1994 and June 30 1994 CRANKCASE PART NUMBER SERIAL NUMBER 652538 4 652538 4A1 652539 1 652539 1A1 652539 2A1 652539 5 652540 1 652540 1A1 652540 2 652540 2A1 652559 652559A1 652654 B019401XXX thru F309401XXX The letter suffixes as indicated by XXX above following the serial numbers are insignificant in determining affectivity Use the letter prefix and subsequent numerals to determine crankcase effectivity ISSUED REVISED gt TELEDYNE CONTINENTAL MOTORS P O Box 90 MOBILE ALABAMA 36601 3 of 8 334 438 3411 12 o2 94 PAGE NO REVISION INSPECTION AND REWORK INSTRUCTIONS 1 Open or remove the cowling necessary to gain access to the rear of the engine 2 Remove the two sets of nuts and washers from the idler gear support pin studs These studs are positioned on the rear accessory section of the crankcase just below the left and right accessory drives See Figure 1 DO NOT remove the idler gear support pin 3 Measure the stud height extending out of the crankcase and record Using a suitable stud remover or double nuts remove the two 250 studs 4 Check these tapped holes in the crankcase to determine if they are oversize by using a 3 2130 drill bit See Figure 2 This will be accomplished by first measuring the shank of the drill bit with a calibrated micrometer The diamet
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