CRANKSHAFT, COUNTERWEIGHT AND CONNECTING ROD REPAIR INFORMATION

TELEDYNE CONTINENTL IRCRFT ENGINE SERVICE BULLETIN Compliance Will Enhance Safety CTEGORY 3 SB00-3 Supercedes SB00-3, SIL98-7, M 89-4 nd M 90- TECHNICL PORTIONS F PPROVED SUBJECT: PURPOSE: COMPLINCE: MODELS FFECTED: CRNKSHFT, COUNTERWEIGHT ND CONNECTING ROD REPIR INFORMTION Provide information that may be required by the mechanic during replacement or overhaul. Next Overhaul or anytime crankshaft, counterweights or connecting rods are removed. LL This Service Bulletin contains: Table. Engine Power Train, a list of all engine models and their major power train components. Table. history of crankshaft part numbers. Table 3. list of all crankshaft assemblies and their counterweight components. Table 4. Specifications for non-current production wide rod crankshafts. Table. Connecting Rod Specifications. Crankshaft Counterweight Hanger Blade nd Counterweight Inspection/Repair and Connecting Rod Inspection/Repair. Use the first Table to find the crankshaft and the following tables to reference components. Use the crankshaft, counterweight and connecting rod procedures during replacement or overhaul. Refer to the latest revision of TCM Service Bulletin SB9-7 for assembly torque values. ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER of 3 P.O. Box 90 Mobile labama 30-438-34 0 0 000 0 9 004 004

TBLE. ENGINE POWER TRIN ENGINE MODEL C/S SSEMBLY CONROD CONROD BERING BERING SET - 3099 30 3940 74 3008-7 3099 39 3940 74 3008 C-7 309 30 3940 30084 3099 3008 C-8 309 30 3940 30084 3099 3008 C-90 308 479 3940 30084 3008 C-4-3080 479 3940 C-4-H 33 479 3940 30 E- 374 3 30383 449 E-8-,3,8,9, 37 3 30383 449 E-8-,3,8,9, 374 3 30383 449 E--4,8 37 3 30383 449 0-00- 30 479 3940 74 3008 0-00-B 30 479 3940 74 3008 0-40 3709 4794 3940 370 0-300- 3080 479 3940 0-300-B 33 479 3940 30 0-300-C 338 479 3940 0-300-D 338 479 3940 0-470- No Longer Serviced 0-470-4 No Longer Serviced 0-470-7 No Longer Serviced 0-470- No Longer Serviced 0-470-3 No Longer Serviced 0-470- No Longer Serviced 0-470- 494 90 308 37403 489 490 0-470-C 494 90 308 37403 0-470-E 494 90 308 37403 489 490 0-470-B 397 90 308 37403 489 0-470-N 397 90 308 37403 489 0-470-G 00 90 308 493 488 4807 7793 OIL CONTROL COLLR 739 ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

ENGINE MODEL TBLE. ENGINE POWER TRIN (continued) C/S SSEMBLY CONROD CONROD BERING BERING SET O-470-J 494 90 308 37403 489 490 O-470-K 039 90 308 37403 489 490 O-470-L 039 90 308 37403 489 490 O-470-M 039 90 308 4807 489 490 O-470-P 0 90 308 493 488 7793 O-470-R 494 90 308 37403 489 490 O-470-S 494 90 308 489 490 O-470-U 4938 90 308 489 490 GO-300-,C,D,E 78 4794 3940 943 GTSIO-0-C 300 90 308 3304 GTSIO-0-D 300 90 308 3304 GTSIO-0-H 300 90 308 3304 GTSIO-0-K 300 90 308 3304 GTSIO-0-L 300 90 308 3304 GTSIO-0-M 300 90 308 3304 GTSIO-0-N 300 90 308 3304 IO-40-34 4793 4338 3703 IO, IOF-40-B, 34 4793 4338 3703 IO-34-30778 90 308 494 IO-30-338 4794 3940 49 IO-30-B 39 4793 4338 497 IO-30-C 338 4794 3940 49 IO-30-CB 39 4793 4338 497 IO-30-D 338 4794 3940 49 IO-30-DB 39 4793 4338 497 IO-30-ES 39 4793 4338 497 IO-30-G 339 4794 3940 49 IO-30-GB 39 4793 4338 497 IO-30-H 339 4794 3940 49 IO-30-HB 39 4793 4338 497 IO-30-J 339 4794 3940 49 IO-30-JB 39 4793 4338 497 OIL CONTROL COLLR ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 3 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

ENGINE MODEL TBLE. ENGINE POWER TRIN (continued) C/S SSEMBLY CONROD CONROD BERING BERING SET IO-30-K 339 4794 3940 49 IO-30-KB 39 4793 4338 497 IO-470-C 0 90 308 7793 488 493 IO-470-D 4933 90 308 7793 488 493 IO-470-E 4933 90 308 7793 488 493 IO-470-F 4933 90 308 7793 488 493 IO-470-H 0 90 308 7793 488 493 IO-470-J 009 90 308 7793 488 493 IO-470-K 009 90 308 7793 488 493 IO-470-L 00 90 308 7793 488 493 IO-470-M 4933 90 308 7793 488 493 IO-470-N 0 90 308 7793 488 493 IO-470-R 30977 3 30383 7793 488 493 IO-470-S 4933 90 308 7793 488 493 IO-470-U 493 90 308 7793 488 493 IO-470-V 493 90 308 7793 488 493 IO-0-4934 90 308 488 493 OIL CONTROL COLLR 739 739 739 739 739 739 739 739 739 739 739 739 739 739 739 IO-0-B 4989 90 308 493 980 IO-0-B 4989 90 308 493 980 IO-0-BB 49898 9 4398 49 980 IO-0-C 4989 90 308 493 980 ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 4 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

ENGINE MODEL TBLE. ENGINE POWER TRIN (continued) C/S SSEMBLY CONROD CONROD BERING BERING SET IO-0-CB 49898 9 4398 49 980 IO-0-D 4934 90 308 488 739 493 IO-0-E 4934 90 308 488 493 IO-0-F 4934 90 308 488 493 IO-0-J 4934 90 308 488 493 IO-0-K 4934 90 308 488 493 IO-0-L 4934 90 308 488 493 OIL CONTROL COLLR 739 739 739 739 739 IO-0-M 4989 90 308 493 980 IO-0-MB 49898 9 4398 49 980 IO-0-P 4944-90 308 494 739 IO-0-49900 9 4398 49 980 IO, IOF-0-B 49900 9 4398 49 980 IO-0-B9, 49900 00 4398 49 980 B33, B37 IO, IOF-0-C 49900 9 4398 49 980 IO-0-C, 49900 00 4398 49 980 C9, C30 IO, IOF-0-D 43 9 4398 49 739 IO, IOF-0-E 43 9 4398 49 739 IO, IOF-0-F 43 9 4398 49 739 IO, IOF-0-G 49900 9 4398 49 980 IO, IOF-0-L 43 9 4398 49 739 IO, IOF-0-N 49900 9 4398 49 980 IO, IOF-0-P 49900 9 4398 49 980 IO, IOF-0-R 49900 9 4398 49 980 LIO-0-P 4944-000 308 494 739 LTSIO-30-E 337 4794 3940 49 LTSIO-30-EB 33 4793 4338 497 LTSIO-30-KB 33 4793 4338 497 LTSIO-30-RB 33 4793 4338 497 LTSIO-0-E 4944-000 308 494 739 TSIO-30-338 4794 3940 49 TSIO-30-B 39 4793 4338 497 TSIO-30-B 338 4794 3940 49 TSIO-30-C 339 4794 3940 49 TSIO-30-CB 39 4793 4338 497 TSIO-30-D 339 4794 3940 49 ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

ENGINE MODEL TBLE. ENGINE POWER TRIN (continued) C/S SSEMBLY CONROD CONROD BERING BERING SET TSIO-30-DB 39 4793 4338 497 TSIO-30-E 339 4794 3940 49 TSIO-30-EB 39 4793 4338 497 TSIO-30-F 339 4794 3940 49 TSIO-30-FB 39 4793 4338 497 TSIO-30-G 339 4794 3940 49 TSIO-30-GB 39 4793 4338 497 TSIO-30-H 339 4794 3940 49 TSIO-30-HB 39 4793 4338 497 TSIO-30-JB 39 4793 4338 497 TSIO-30-KB 39 4793 4338 497 TSIO-30-LB 39 4793 4338 497 TSIO-30-MB 39 4793 4338 497 TSIO-30-RB 39 4793 4338 497 TSIO-30-SB 39 4793 4338 497 TSIO-470-B 0 4437 308 7793 488 TSIO-470-C 0 4437 308 7793 488 TSIO-470-D 348 4437 308 7793 488 OIL CONTROL COLLR 739 739 739 TSIO-0-E 4944-000 308 494 739 TSIO-0-F 4934 004 308 493 739 TSIO-0-B 4989 004 308 493 980 TSIO-0-BB 49898 00 4398 49 980 TSIO-0-BE 49898 00 4398 49 980 TSIO-0-C 4934 004 308 488 493 739 TSIO-0-CE 4948 00 4398 49 739 TSIO-0-D 4989 004 308 493 980 TSIO-0-E 4989 004 308 493 980 TSIO-0-EB 49898 00 4398 49 980 TSIO-0-G 4934 004 308 488 493 739 TSIO-0-H 4934 004 308 488 493 739 TSIO-0-J 4989 004 308 493 980 TSIO-0-JB 49898 00 4398 49 980 TSIO-0-K 4989 004 308 493 980 TSIO-0-KB 49898 00 4398 49 980 TSIO-0-L 4989 004 308 493 980 TSIO-0-LB 49898 00 4398 49 980 TSIO-0-M 4934 004 308 488 493 739 TSIO-0-N 4989 004 308 493 980 TSIO-0-NB 49898 00 4398 49 980 TSIO-0-P 4934 004 308 488 493 739 ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

ENGINE MODEL TBLE. ENGINE POWER TRIN (continued) C/S SSEMBLY CONROD CONROD BERING BERING SET TSIO-0-R 4934 004 308 488 493 TSIO-0-T 4934 004 308 488 493 OIL CONTROL COLLR 739 739 TSIO-0-UB 49898 00 4398 49 980 TSIO-0-3 00 4398 49 980 TSIO-0-VB 49898 00 4398 49 980 TSIO-0-WB 49898 00 4398 49 980 TSIO-0-49900 00 4398 49 980 TSIO-0-B 49900 00 4398 49 980 TSIO, TSIOF- 49900 00 4398 49 980 0C TSIO, TSIOF- 49900 00 4398 49 980 0-E TSIOL-0-39 00 4398 49 980 TSIOL-0-B 39 00 4398 49 980 TSIOL-0-C 39 00 4398 49 980 FOOT NOTES: See Table for new and old connecting rod part numbers and hardware to connecting rod specified usage. With 334 thrust washer. Tapered crankshaft with removable prop flange. Flange (prop) type crankshaft. Has flange type bearing for use with Phase style crankcase and crankshaft. See TCM Service Bulletin M78-9 or latest revision. Thrust washer type bearings for use with Phase style crankcase and crankshaft. See TCM Service Bulletin M78-9 or latest revision. For use with Phase 3 style crankcase and crankshaft. See TCM Service Bulletin M78-9 or latest revision. For 0-470-G engines with modernized crankshafts using oil transfer collar. For 0-470-G engines with modified crankshafts. Remove and discard nylon wipers for 0470G. Non-Production Engine ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 7 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

TBLE. CRNKSHFT SSEMBLY PRT NUMBER HISTORY SPEC. CRNKSHFT SUPERSEDES SUPERSEDES SUPERSEDES SUPERSEDES SSEMBLY O-00-30 3434 O-00-B 30 3434 O-300-3080 O-300-C 338 0 84 O-300-D 338 0 84 O-470-494 33 3790 O-470-B 397 337 397 O-470-C 494 33 3790 O-470-E 494 33 3790 O-470-F 494 33 3790 O-470-G 00 33 O-470-J 494 33 3790 O-470-K 039 339 39 O-470-L 039 339 39 O-470-M 039 339 39 O-470-N 397 337 397 O-470R 494 33 3790 O-470-S 494 33 O-470-U 4938 439 490 GO-300-, C, D, E 78 GIO-0-800 GTSIO-0-C 300 83 8 00 304 GTSIO-0-D 300 83 8 00 304 GTSIO-0-H 300 83 8 00 304 GTSIO-0-K 300 83 8 00 304 GTSIO-0-L 300 83 8 00 304 GTSIO-0-M 300 83 8 00 304 GTSIO-0-N 300 83 8 00 304 IO-40-34 IO, IOF-40-B 34 IO-34-30778 IO-30-338 047 4978 3900 34479 IO-30-B 39 04 437 430 IO-30-C 338 047 4978 3900 34479 IO-30-CB 39 04 437 430 IO-30-D 338 047 4978 3900 34479 IO-30-DB 39 04 437 430 IO-30-ES 39 IO-30-G 339 048 3978 IO-30-GB 39 04 437 430 ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 8 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

TBLE. CRNKSHFT SSEMBLY PRT NUMBER HISTORY (continued) SPEC. CRNKSHFT SUPERSEDES SUPERSEDES SUPERSEDES SUPERSEDES SSEMBLY IO-30-H 339 048 3978 IO-30-HB 39 04 437 430 IO-30-J 339 048 3978 IO-30-JB 39 04 437 430 IO-30-K 339 048 3978 IO-30-KB 39 04 437 430 IO-470-C 0 00 338 784 IO-470-D 4933 3097 730 IO-470-E 4933 3097 730 IO-470-F 4933 3097 730 IO-470-G 4933 3097 730 IO-470-H 0 008 899 30977 7348 IO-470-J 009 43089 334 838 IO-470-K 009 43089 334 838 IO-470-L 00 43090 3088 894 IO-470-M 4933 3097 730 IO-470-N 0 00 4309 3093 9309 IO-470-P 988 IO-470-R 30977 93 IO-470-S 4933 3097 730 IO-470-U 493 39 IO-470-V 493 39 IO-0-4934 37 IO-0-B 4989 330 IO-0-B 4989 3943 IO-0-BB 49898 4438 439 IO-0-C 4989 330 IO-0-CB 49898 4438 439 IO-0-D 4934 37 IO-0-E 4934 37 IO-0-F 4934 37 IO-0-J 4934 37 IO-0-K 4934 37 IO-0-L 4934 37 IO-0-M 4989 330 IO-0-MB 49898 4438 439 IO-0-P 4944- IO-0-49900 404 IO, IOF-0-B 49900 404 IO, IOF-0-C 49900 404 IO, IOF-0-D 43 IO, IOF-0-E 43 IO, IOF-0-F 43 IO, IOF-0-G 49900 IO, IOF-0-L 43 ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 9 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

TBLE. CRNKSHFT SSEMBLY PRT NUMBER HISTORY (continued) SPEC. CRNKSHFT SUPERSEDES SUPERSEDES SUPERSEDES SUPERSEDES SSEMBLY IO-0-M 439 IO, IOF-0-N 49900 IO, IOF-0-P 49900 IO, IOF-0-R 49900 LIO-0-P 4944- LTSIO-30-E 337 04 438 LTSIO-30-EB 33 0 4333 LTSIO-30-KB 33 0 4333 LTSIO-30-RB 33 LTSIO-0-E 4944-43- TSIO-30-338 047 4978 3900 34479 TSIO-30-B 39 04 437 430 TSIO-30-B 338 047 4978 3900 34479 TSIO-30-C 339 048 3978 TSIO-30-CB 39 04 437 430 TSIO-30-D 339 048 3978 TSIO-30-DB 39 04 437 430 TSIO-30-E 339 048 3978 TSIO-30-EB 39 0 4333 437 TSIO-30-F 339 048 3978 TSIO-30-FB 39 04 437 430 TSIO-30-G 339 048 3978 TSIO-30-GB 39 04 437 430 TSIO-30-H 339 048 3978 TSIO-30-HB 39 04 437 430 TSIO-30-JB 39 04 437 430 TSIO-30-KB 39 0 4333 437 TSIO-30-LB 39 04 437 430 TSIO-30-MB 39 04 437 TSIO-30-RB 39 TSIO-30-SB 39 TSIO-470-B 0 008 899 TSIO-470-C 0 008 899 TSIO-470-D 348 007 3494 TSIO-0-E 4944-43 TSIO-0-F 4934 37 TSIO-0-B 4989 330 TSIO-0-BB 49898 4438 439 TSIO-0-BE 49898 4438 439 TSIO-0-C 4934 37 TSIO-0-CE 4948 483 TSIO-0-D 4989 330 TSIO-0-E 4989 330 TSIO-0-EB 49898 4438 439 TSIO-0-G 4934 37 TSIO-0-H 4934 37 TSIO-0-J 4989 330 ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 0 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

TBLE. CRNKSHFT SSEMBLY PRT NUMBER HISTORY (continued) SPEC. CRNKSHFT SUPERSEDES SUPERSEDES SUPERSEDES SUPERSEDES SSEMBLY TSIO-0-T 4934 37 TSIO-0-UB 49898 4438 439 TSIO-0-VB 49898 4438 439 TSI0O0-WB 49898 4438 439 TSIO-0-49900 TSIO-0-B 49900 TSIO, TSIOF- 49900 0-C TSIO, TSIOF- 49900 0-E TSIOL-0-39 TSIOL-0-B 39 TSIOL-0-C 39 338 Crankshaft, 338 Gear and 4 each 309 Screws must be used together. 338 Crankshaft, 3090 Gear and 4 each 309 Screws must be used together. Used in non-production engines only. ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

TBLE 3. CRNKSHFT SSEMBLIES C/S SSY. HNGR. BLD. BUSH. BUSH. I.D. 3080 30 &.43.443 3083.43.438 33 30 &.43.443 3083.43.438 78.73.739 84 30 & 3083.43.443.43.438 43 30998.. 4933 30998.. 4934 30998.. 493 30998.. 4938 30998.. 494 30998.. 4944-30998.. 4944-30998.. 4948 30998.. CWT. QTY. C/S CWT. CWT. BUSH. BUSH. I.D. 307 30.43.443 3084 308.43.438 307 30.43.443 3084 308.43.438 78 4.73.739 307 3084 399 399 399 399 399 399 399 399 399 399 399 399 399 399 399 399 399 399 399 399 399 399 399 30.43.443 308.43.438 3993.. 3993.. 3993.. 3993.. 3993.. 3993.. 3993.. 3993.. 3993.. CHEEK LOC. 8 CWT. PIN 30-30- 30-30- PIN DI..378.378.378.378.49.49.378.378 43-0.. 43-03.474.47 43-04.7.8 43-0..7 43-0..7 43-03.474.47 43-04.7.8 43-0..7 43-04.7.8 43-0.07.08 43-0..7 43-04.7.8 43-0.07.08 43-0..7 43-04.7.8 43-04.7.8 43-0.. 43-04.7.8 43-0.. 43-0.. 43-03.474.47 43-04.7.8 CWT. ORDER 3 3 3 4 4 4 / 4 / 4 RET. RET. PLTE RING 3088 4080-3 3088 4080-3 3397 9004 3088 4080-3 439 904 439 904 439 904 439 904 439 904 439 904 439 904 439 904 439 904 ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

TBLE 3. CRNKSHFT SSEMBLIES (continued) C/S SSY. HNGR. BLD. BUSH BUSH I.D. 4989 30998.. 4989 30998.. 49898 30998.. 49900 30998.. 00 30998.. 009 30998.. 00 30998.. 0 30998.. 039 30998.. 348 30998.. 39 30998.. 300 897.74.77 39 3980.04.07 CWT. QTY. C/S CWT. 399 399 399 399 399 399 399 399 399 399 399 399 3997 3997 399 399 399 399 399 399 399 399 399 399 399 399 399 399 CWT. BUSH BUSH. I.D. 3993.. 3993.. 3993.. 3993.. 3993.. 3993.. 3993.. 3993.. 3993.. 3993.. 3993.. 833 8978.74.77 3999 3999 3998.04.07 CHEEK LOC. 8 CWT. PIN PIN DI. 43-0..7 43-03.474.47 43-04.7.8 43-0..7 43-0..7 43-03.474.47 43-0.. 43-03.474.47 43-04.7.8 43-0.. 43-03.474.47 43-04.7.8 43-0.. 43-08.94.9 43-0..7 43-04.7.8 43-0..7 43-04.7.8 43-0..7 43-0..7 43-0..7 43-03.474.47 43-04.7.8 43-0.. 43-03.474.47 43-0.07.08 43-04.7.8 43-0 43-.498.499..3 CWT. ORDER 4 4 4 4 4 4 4 4 / 3 3 3 4 / PLTE RET. RING 439 904 439 904 439 904 439 904 439 904 439 904 439 904 439 904 439 904 439 904 439 904 3808 9004 343 9004 ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 3 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

TBLE 3. CRNKSHFT SSEMBLIES (continued) C/S SSY. HNGR. BLD. BUSH BUSH I.D. 33 3980.04.07 337 3980.04.07 338 3980.04.07 339 3980.04.07 338 3980.04.07 397 30998.. 800 439 897.74.77 30998.. CWT. QTY. C/S CWT. 3999 3999 3999 3999 3999 3999 3999 3999 3999 3999 399 399 833 833 833 CWT. BUSH BUSH. I.D. 3998.04.07 3998.04.07 3998.04.07 3998.04.07 3998.04.07 3993.. 8978.74.77 399 3993.. CHEEK LOC. 8 CWT. PIN PIN DI. 43-0.498.499 43-..3 43-0.498.499 43-..3 43-09.4.4 43-0.498.499 43-..3 43-.0. 43-43-0.. 43-0.. 43-04.7.8 43-0.. CWT. ORDER 4 / 4 / 4 / 3 3 3 PLTE RET. RING 343 9004 343 9004 343 9004 343 9004 343 9004 439 904 94 9004 439 904 Used in non-production engines only. If replacing 30 pin with 43 pin the 439 plate must be used. Replacement crankshaft blade bushing may be purchased in standard and oversize dimensions as listed below: Crankshaft Blade Bushing P/N STNDRD P.00 P.003 P.00 P.00 P.0 30998 VILBLE VILBLE VILBLE VILBLE VILBLE VILBLE 3083 VILBLE N/ VILBLE VILBLE N/ N/ 30 VILBLE N/ VILBLE VILBLE N/ N/ 37038 VILBLE N/ N/ N/ N/ N/ VILBLE N/ N/ VILBLE N/ N/ 897 VILBLE N/ VILBLE VILBLE VILBLE N/ 3980 VILBLE VILBLE VILBLE VILBLE VILBLE VILBLE ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 4 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

TBLE 4. WIDE ROD CRNKSHFTS (NOT CURRENT PRODUCTION) C/S SSEMBLY 374 (E-8-,3,8,9,) 37 (E-8-,3,8,9, & E--4,8) 3790 (O-470-,C,E,F,J & R) 397 (O-470-B & N) 77 (O-470-G) 39 (O-470- K,L,M) 787 (O-470-P) 784 (IO-470-C) 730 (IO-470-D, E,F,G,M, & S) 7348 (IO-470-H) 93 (IO-470-R) 988 (IO-470-P,T) HNGR. BLD. BUSH BUSH I.D. 3099.. 30998 37038 30998 37038 30998 37038 30998 37038 30998 30998 30998 30998 30998 30998 30998 30998 30998 30998 30998 30998 30998 30998...34.4...34.4...34.4...34.4............................ CWT. QTY. C/S CWT. BUSH. BUSH I.D. CWT.. 37 30977.. 37 37049 37 37049 37 37049 37 88 37 37 37 37 37 37 37 37 37 37 37 37 37 37 30997 37044 30997 37044 30997 37044 30997 87 30997 30997 30997 30997 30997 30997 30997 30997 30997 30997 30997 30997 30997 30997...34.4...34.4...34.4...483.3............................ CHEEK LOC. CWT. PIN PIN DI. 30-4.4.74 30-4 30-4 30-4 30-4 30-30- 30-30- 30-4 30-4 30-4 30-4 30-4 30-4 30-4 30-4 30-4 30-4 30-4 30-4 30-30-.4.74.4.74.4.74.4.74...947.97.93.9.93.9.4.74.4.74.4.74.4.74.4.74.4.74.4.74.4.74.4.74.4.74.4.74.4.74.4.74.4.74 CWT. ORDER PLTE RET. RING 3 3 9 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

TBLE 4. WIDE ROD CRNKSHFTS (continued) (NOT CURRENT PRODUCTION) C/S SSEMBLY 838 (IO-470-J,K) 894 (IO-470-L) 9309 (IO-470-N) 39 (IO-470-U & V) HNGR. BLD. BUSH 30998 37038 30998 30998 30998 30998 30998 30998 BUSH I.D....34.4............ CWT. QTY. C/S. CWT. 37 37049 37 37 37 37 37 398 CWT. BUSH. 30997 37044 30997 30997 30997 30997 30997 30997 BUSH I.D....34.4............ CHEEK LOC. CWT. PIN 30-4 30-4 30-4 30-3 30-4 30-4 30-4 30-3 PIN DI..4.74.4.74.4.74.7.8.4.74.4.74.... CWT. ORDER PLTE RET. RING 3 3 3 3 3 3 3 3 30998.. 398 30997.. 30-3 Counterweight P/N 37 superseded by P/N 399 Counterweight P/N 37049 superseded by P/N 390; P/N 390 superseded by P/N 390 Counterweight P/N 88 superseded by P/N 390; P/N 390 superseded by P/N 390 Bushing P/N 30997 superseded by 3993 Bushing P/N 37044 superseded by 3904 Plate P/N 3 superseded by P/N 90; P/N 90 superseded by P/N 33; P/N 33 superseded by P/N 439 Snap Ring P/N 3 superseded by P/N 904 Counterweight Suppression: When using P/N 30-pins you must use P/N 33 retainer plates When using P/N 43-pins you must use P/N 439 retainer plates.. Original Part Pin Diameter Pin Diameter Current Pin Diameter Number Part Number Part Number 30-4.4-.74 30-3.9 -.9 43-0. -.7 30-7.474 -.47 30-38.474 -.47 43-03.474 -.47 30-3.70 -.80 30-37.70 -.80 43-04.7 -.8 30-. -. 30-40. -. 43-0. -. 30-3.07 -.08 30-39.07 -.08 43-0.07 -.08 N/ N/ 30-34.490 -.490 43-07.490 -.49 30-.93 -.9 30-3.93 -.9 43-08.94 -.9 N/ N/ 30-4.4 -.4 43-09.4 -.4 N/ N/ 30-43.498 -.499 43-0.498 -.499 N/ N/ 30-44. -.3 43-. -.3 N/ N/ N/ N/ 43-.0 -. 30-.49 -.49 N/ N/ N/ N/ 30-.378 -.378 N/ N/ N/ N/ 30-7.700-70 N/ N/ N/ N/ 4/ ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

COUNTERWEIGHT IDENTIFICTION SEE FIGURES THROUGH I. FIGURE. 3084 COUNTERWEIGHT SSEMBLY MDE WITH 308 COUNTERWEIGHT ND 308 BUSHINGS FIGURE B. 307 COUNTERWEIGHT SSEMBLY MDE WITH 308 COUNTERWEIGHT ND 30 BUSHINGS ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 7 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

FIGURE C. 399 COUNTERWEIGHT SSEMBLY MDE WITH 3903 COUNTERWEIGHT ND 3993 BUSHINGS FIGURE D. 3997 COUNTERWEIGHT SSEMBLY MDE WITH 33339 COUNTERWEIGHT ND 3993 BUSHINGS ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 8 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

FIGURE E. 399 COUNTERWEIGHT SSEMBLY MDE WITH 3000 COUNTERWEIGHT ND 3993 BUSHINGS FIGURE G. 833 COUNTERWEIGHT SSEMBLY MDE WITH 834 COUNTERWEIGHT ND 8978 BUSHINGS FIGURE F. 3999 COUNTERWEIGHT SSEMBLY MDE WITH 993 COUNTERWEIGHT ND 3998 BUSHINGS ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 9 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

FIGURE G. 833 COUNTERWEIGHT SSEMBLY MDE WITH 834 COUNTERWEIGHT ND 8978 BUSHINGS FIGURE H. 78 COUNTERWEIGHT SSEMBLY MDE WITH 88 COUNTERWEIGHT ND 4 BUSHINGS ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 0 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

..94 X-794-B Pin One Side Only FIGURE I. 390 & 390 COUNTERWEIGHT SSEMBLY MDE WITH 3000 COUNTERWEIGHT 390 COUNTERWEIGHT USES 3904 BUSHINGS 390 COUNTERWEIGHT USES 3009 BUSHINGS ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

CRNKSHFT COUNTERWEIGHT HNGER BLDE ND COUNTERWEIGHT INSPECTION ND BUSHING REPLCEMENT Special Instructions For GTSI0-0 Engines Service bulletin M90- mandated the replacement of all part number 380 counterweights with part number 833 or later design counterweights. Earlier design counterweights part number 380 must be discarded. NOTE: Part number 833 or later design counterweights that do not meet the inspection criteria must be replaced. Scrap all part number 380 counterweights. Starter adapter viscous dampers must be replaced with new items at engine overhaul, whenever the starter adapter is overhauled or replaced, or whenever inspection per the latest revision of CSB94-4D indicates distress to either the starter shaft gear or to the crankshaft gear. If either gear shows distress, both gears must be replaced in addition to the starter adapter. NOTE: Refer to CSB94-4D or latest revision for specific instructions on starter adapter inspection and replacement. The following is for all Models: Inspection nd Bushing Replacement Crankshaft hanger blade and counterweight bushing replacement must be performed using the specified procedure and the following special tools:. Borrough s 8077 Crankshaft Hanger Blade Bushing Removal/Installation set or equivalent.. Borrough s 8077C Counterweight Bushing Removal/Installation Fixture or equivalent. 3. Federal Dimension ir Gauge with correct size Setting Ring and ir Plug or equivalent. See Figures 3 and 4 for specified bore sizes. Or Starrett No. 78 Series 3 point contact inside micrometers. Contact the L.S. Starrett Company -800-4-8887. Warning Removing and replacing bushings with makeshift tools and methods may result in irreparable damage to the crankshaft and / or counterweight. Counterweight Removal and Inspection. Remove the counterweight snap rings from the two bores in the counterweight using snap ring pliers with a 90 degree bend.. Remove the counterweight pin retaining plates from their bores. The plates are a close tolerance fit and may require slight rocking to remove them. 3. Remove Counterweight pins with a magnet. Counterweight Inspection Only the case hardened (tuftrided) counterweight assemblies P/N 399, 399, 3997, 3999, 390, or later design and 78, 3084, 307 (non-tuftrided) counterweight assemblies may be considered for bushing replacement. Discard all other earlier design counterweights.. Inspect the bump surface of the counterweight as shown in Figure. The bump surface contact marks must not exceed.00 inches in depth.. Counterweight bushings must be removed using the specified tools and discarded. Inspect the counterweights using the following procedure: ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

INSPECT THIS BUMP SURFCE RE FIGURE. COUNTERWEIGHT BUMP SURFCE INSPECTION a) Presence of tuftriding on counterweight assemblies P/N 399, 399, 3997, 3999, 390, may be determined by using a 4% solution (by volume) of copper sulfate and water (CUSO 4 ). fter removing the counterweight bushing, thoroughly clean the bushing bore. Place one drop of the 4% copper sulfate solution on the cleaned surface of the counterweight bushing bore. llow at least seconds for the chemical reaction to take place. Formation of red deposits indicates the absence of tuftriding. Discard all counterweights with this indication. b) The crankshaft and counterweights must be magnetic particle inspected by a certified technician. CUTION Before magnetic particle inspection of any part, it must be completely cleaned and free of dirt, carbon, varnish, gum and paint. Plug small holes leading to obscure cavities with tight-fitting wood plugs or with a hard grease which is soluble in lubricating oil. This will prevent particles from lodging in places where they would be difficult to remove and places not subject to visual inspection. fter magnetic particle inspection remove all such plugs and clean the part thoroughly in solvent. Dry the part with compressed air. Check for complete demagnetization. Where magnetic particle inspection is required, use fluorescent method, wet continuous procedure. Refer to the latest revision of S E 444 for specific methods and procedures based on type of inspection being performed. CCEPT / REJECT CRITERI Rejectable discontinuities are any of the following: fatigue cracks, forming cracks, grinding and heat treat cracks, embrittlement cracks, seams, laps, burst. Parts which contain linear indications which cannot be reworked or indications which break into corners, edges, holes, thread roots, fillets, or keyways must be rejected. The particular magnetic particle manufacturer's information regarding use, safety data and disposal must be followed carefully. ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 3 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

FIGURE 3. COUNTERWEIGHT BUSHING BORE INSPECTION COUNTERWEIGHT SSEMBLY COUNTERWEIGHT DIMETER 3084 308.87 /.88 307 308.87 /.88 78 88.000 /.00 399 390 3000.874 /.87 390 399 3903.874 /.87 3997 33339.874 /.87 3999 993.000 /.00 c) Crankshafts must be ultrasonically inspected in accordance with MSB9-0. Refer to the applicable engine overhaul manual for specific instructions. Crankshafts exhibiting reject-able indications must be discarded. d) The counterweight bushing bores must be smooth. Counterweights with worn, pitted, fretted or out of round bushing bores must be discarded. Use an air gauge with correct size air plug and setting ring to verify the bushing bore diameter. Bushing bores must measure as specified total indicator reading (T.I.R.) See Figure 3, Counterweight Bushing Bore Inspection, for bushing bore diameters. Counterweights with bushing bores exceeding the specified dimensions must be scrapped. e) Carefully inspect the counterweight counterbores for signs of wear in the wall that retains the counterweight pin retaining plates. This area is adjacent to the inside edge of the retaining ring groove. It may appear as an additional step and/or taper of the hole into the ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 4 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

retaining ring groove. If any wear is evident the counterweight must be replaced. f) If no plate wear is evident, check the retaining ring groove in each hole for wear patterns which can affect the seating of the retaining ring. ny worn condition which may affect retaining ring seating will require replacement of the counterweight. g) Crankshaft counterweights are matched in pairs with a maximum weight variation of two () grams. If either counterweight is damaged a matched pair must be procured and replaced on that cheek. h) The counterweight bushings must be replaced using the specified tools. Refer to Figures and B for specifications regarding counterweight bushing removal and replacement. The replacement bushings must have an interference fit of.00 to.003 inch into the bushing bores. 3. The crankshaft counterweight hanger blade bushings must be replaced using the specified tools and following procedure. Refer to Figure for specifications regarding crankshaft hanger blade bushing removal and replacement. a) fter removal, measure the inside diameter of the crankshaft counterweight hanger blade bushing holes. FIGURE 4. CRNKSHFT HNGER BLDE BUSHING BORE INSPECTION CRNKSHFT DIMETER CRNKSHFT SSEMBLY SSEMBLY DIMETER 3080.87 /.88 0.874 /.87 43.874 /.87 039.874 /.87 4933.874 /.87 348.874 /.87 4934.874 /.87 39.874 /.87 493.874 /.87 300.4 /. 4938.874 /.87 39.8 /.8 494.874 /.87 33.8 /.8 4948.874 /.87 337.8 /.8 4989.874 /.87 338.8 /.8 4989.874 /.87 397.874 /.87 49898.874 /.87 4944-.874 /.87 49900.874 /.87 4944-.874 /.87 00.874 /.87 800.4 /. 009.874 /.87 439.874 /.87 00.874 /.87 338.8 /.8 ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

a) The bushing holes must be smooth. Crankshafts with worn, pitted, fretted or out of round bushing holes must be discarded. b) Using the same tools that were used for bushing removal install the new bushings. The replacement bushings must have an interference fit of.00 to.003 inch into the bushing holes. c) Refer to Figure for specifications regarding crankshaft hanger blade bushing removal and replacement. The new bushings must be installed into the same positions as the original bushings. Replacement crankshaft blade bushings are available in standard and some oversize dimensions. Refer to note Table 3. 4. Dimensional verification of installed bushings: a) Because of the close tolerances required, the replaced bushings must be inspected using an air gauge with correct size air plug and setting ring. Refer to Figures, B and. b) fter the bushings have been installed in both the counterweights and the crankshaft hanger blades, a magnetic particle inspection as specified, must be performed by a certified technician. This inspection is to insure that no cracks have developed during the bushing removal and installation process. FIGURE. COUNTERWEIGHT BUSHING REPLCEMENT ND SSEMBLY FOR 30, 470, IO-0, L/TSI0-0, IO-0, TSI0-0, TSIOL-0 CRNKSHFTS ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

COUNTERWEIGHT SSEMBLY DIMETER (Installed) 3084.43 /.438 307.43 /.443 399. /. 399. /. 3997. /. 3999.04 /.07 390.4 /.4 390.483 /.3 833.74 /.77 FIGURE B. COUNTERWEIGHT BUSHING SSEMBLY FOR GTSIO-0 ND GIO-0 CRNKSHFTS NOTE GTSIO-0 COUNTERWEIGHT BUSHING REPLCEMENT IS NOT LLOWED ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 7 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

FIGURE. CRNKSHFT HNGER BLDE BUSHING INSTLLTION CRNKSHFT DIMETER CRNKSHFT DIMETER CRNKSHFT CRNKSHFT SSEMBLY (Installed) SSEMBLY (Installed) 3080 30789.43 /.443 00 004. /. 43 4387. /. 0 004. /. 4933 493. /. 039 4937. /. 4934 493. /. 348 004. /. 493 493. /. 39 49899. /. 4938 4937. /. 300 309.74 /.7 494 4937. /. 39 0.04 /.07 4944-4943. /. 33 03.04 /.07 4944-494. /. 337 044.04 /.07 4948 4947. /. 338 04.04 /.07 4989 49894. /. 339 04.04 /.07 4989 49894. /. 3383 338.04 /.07 49898 49897. /. 397 4937. /. 49900 49899. /. E-800 E-49474. /. 00 004. /. 439 4387. /. 009 004. /. Except as follows: 0 Flush to.004 Below Surface 03 Flush to.004 Below Surface 044 Flush 04 Flush 309 Flush to.00 Below Surface ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 8 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

CONNECTING ROD INSPECTION ND REPIR CLENING: Thoroughly clean connecting rods using an approved solvent or degreaser. Insure all surfaces are free of varnish, oil and residue that will affect reliability of visual, dimensional and magnetic particle inspection. INITIL INSPECTION: Perform the following visual and dimensional inspections. Insure that connecting rod and cap mate marks are adjacent to each other and that the position numbers stamped on or adjacent to the bolt boss match. Scrap connecting rods and caps that do not meet this criteria. Visually inspect connecting rod for corrosion pitting, rust, discoloration (bluing), galling, impact damage, nicks, bending and twisting. Scrap connecting rods with any of these indications. Remove nuts and bolts from connecting rod and separate rod and cap. Visually inspect connecting rod and cap parting surface. Contact signatures resulting from assembly forces are normal and acceptable. However, connecting rods exhibiting fretting signatures that have resulted in the loss of metal as indicated by removal of the original machining marks, either locally or over the entire surface, are not acceptable for continued service. Scrap connecting rods with fretting at the parting surfaces, DO NOT REWORK. Visually inspect nut seat area. Excessive fretting signatures indicating loss of material or signatures of edge loading of the bolt under head surface contact area is cause for rejection and scrap. Visually inspect dowel surfaces at rod and cap bolt holes. Indications of distortion or scoring are cause for rejection and scrap. Insuring that the mate marks are adjacent to each other and the position numbers match, assemble the connecting rod and cap by installing one bolt through cap and rod. With the cap seated firmly against the rod, you must be able to install the remaining bolt using hand pressure only. Scrap connecting rods not meeting this criteria. Lubricate connecting rod bolt and nut threads with clean 0 weight aviation oil. Torque nuts to the value specified in the latest revision of TCM Service Bulletin SB9-7. NOTE The new design Spiralock nuts are free running during installation. Locking is achieved through thread design when the nut is properly torqued. Inspect the inside diameter joint of the rod to cap with both bolts and nuts installed and torqued. Mismatch (or a step) of more than 0.00 inch is not acceptable. n acceptable method of checking mismatch is to use a dial indicator as follows: Place the rod on a surface plate so that the splitline is at the and o clock position. Use vee blocks to hold the rod in place. Using a dial indicator mounted on a height gauge, zero out on one side of the splitline. Move the indicator across the splitline. There must be no more than 0.00 indicator movement. ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 9 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

Warning Removing and installing the connecting rod pin bushing with makeshift tools can damage connecting rods resulting in subsequent failure. Remove piston pin bushing from connecting rod using Borrough s part number 8098, or equivalent, Connecting rod Bushing Removal/ Installation Set and an arbor press. Inspect piston pin bushing bore and surrounding area for nicks, gouges and mechanical damage. Scrap connecting rods with any of these indications. Using precision measuring equipment, such as dial bore gauge or air gauge, verify that the connecting rod meets the dimensional specifications provided in Table. Reference Figure 7. Measure D diameter to 30 degrees either side of connecting rod split line and 90 from the first measurement. Difference between the two measurements must not exceed.00. Connecting rods and caps not meeting these specifications must be scrapped. Inspect the rod channel rails for damage such as nicks, gouges or mechanical damage. Scrap rods with any of these indications. NOTE: Connecting Rods with forging number 9 must also meet the inspection criteria specified in TCM CSB9-3 MGNETIC PRTICLE INSPECTION: Parts must be clean and free of rust, scale, oil or other residue that may affect reliability of magnetic particle inspection Connecting rods will be inspected using both the circular and longitudinal method of magnetization. Use florescent method, wet continuous procedure, Refer to the latest revision of S E 444 for specific methods and procedures based on type of inspection being performed. cceptable indications must be associated with steel inclusions or shallow imperfections on the forging surface. ccept light indications running parallel to the rod axis or around the pin boss and cap ends less than / inch in length. Indications associated with forging laps or with heat treatment are deemed cracks and are not acceptable. The area of blend between the piston pin boss extending one inch into the channel section of the connecting rod, the bolt spotface areas and the channel rail edges are critical and must be free of any indications. ny indication transverse to the rod axis is not acceptable. Reject and scrap connecting rods exhibiting unacceptable indications. ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 30 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

CONNECTING ROD PISTON PIN BUSHING INSTLLTION: Warning Removing and installing the connecting rod pin bushing with makeshift tools can damage connecting rods resulting in subsequent failure. Verify that the piston pin bushing being installed is the correct part number for the application. The piston pin bushing may be chilled slightly to aid installation. Using Borroughs Tool Part Number 8098, Connecting Rod Bushing Removal and Installation set, or equivalent, and an arbor press install the piston pin bushing as follows.. Position connecting rod over the pilot so the mate marks and piston pin bore chamfer are facing up.. Place the bushing on the pilot so that the bushing split is located 4 degrees from the center line of the connecting rod, facing the crankpin end. 3. Position the ram onto the pilot. 4. Using the arbor press, carefully press the bushing flush with the piston pin bore.. Visually inspect connecting rod for nicks or damage that may have occurred during bushing installation. Scrap connecting rods exhibiting these conditions.. Verify the piston pin bushing split is correctly positioned. Reference Figure 7. PISTON PIN BUSHING BORING Boring of the piston pin bushing requires the following equipment:. Borough s Tool Part Number 8, or equivalent.. dapter Kit Part Number 804C (E-series, 470 and 0) or Part Number 807C (O-00, IO-40, 300 series and 30 series) or equivalent. 3. Vertical mill, or equivalent, capable of maintaining 70 R.P.M. 4. Boring tool of the correct sizes. Bore bushing as follows.. Place the connecting rod on the base plate and secure with retainers provided.. Select the correct adapter kit and boring tool for the connecting rod. 3. Using a vertical mill, or equivalent, bore the connecting rod bushing to size. Maintain 70 RPM during boring process. ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 3 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

POST INSTLLTION INSPECTION: Using a Maar-Federal Tool and Supply Co. Inc., Dimension ir D-00 or D-4000 ir Plug Gauge, the correct size Setting Ring and ir Plug for diameter being measured verify that the piston pin bushing is within the minimum and maximum limits for the connecting rod as specified in Table. If the piston pin bushing does not meet dimensional specifications, the bushing will have to be removed and a new bushing installed and bored to size. Using a profilometer check piston pin bushing surface finish. Surface finish must not exceed R a. Check connecting rod bushing for alignment and twist after bushing installation using Borrough s tool number 8, or equivalent. n alternate method would be to use a surface plate, matched vee blocks, precision machined press to fit arbors at least eight inches in length for the pin and crank end of the rod, and two calibrated parallel blocks of flat machined steel at least eight inches long, one half inch wide, and two and one half inches high. To check connecting rod twist, insert the push to fit arbors into the pin and crank end of the rod. Place the connecting rod crank pin end onto the vee blocks. Place the pin end arbor on the two machined parallel steel blocks spaced equal distance from the center line of the rod, but not less than six inches apart Use flat feeler stock to detect clearance between the machined steel blocks and the pin end arbor. Refer to Figure 7 for specified limits. To check connecting rod alignment, rotate the pin end of the connecting rod to a vertical position with the arbor resting against a positive stop. Using a dial indicator mounted on a vertical stand resting on the surface plate, measure the vertical distance of the pin end arbor from the surface plate at points equal distance from the centerline of the connecting rod. Refer to Figure 7 for the specified limits. Connecting rods exceeding the limits specified in Figure 7 must have the piston pin bushing replaced and reamed or the connecting rod must be scrapped. TOOLS ND EQUIPMENT: Tools referred to in this Service Bulletin may be purchased from: Borrough s Tools available from: Kent - Moore 9784 Little Mack Roseville, MI 480-98 Phone:-800-3-038 Maar-Federal Tool and Supply Co. Inc. 44 Eddy Street Providence, RI 0940 Phone: -800-343-00 ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 3 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

WRNING FILURE TO COMPLY WITH THESE SPECIFICTIONS ND INSTRUCTIONS WILL RESULT IN ENGINE MLFUNCTION ND STOPPGE..000 INCH MXIMUM CONVERGENCE OF THESE XES (WITH NEW BUSHING) EXMPLE: LONGITUDINL XIS,CENTER-TO-CENTER DISTNCE OF L MINUS L MUST NOT EXCEED.004 OF N INCH FTER CONNECTING ROD BUSHING HS BEEN FINISH MCHINED. L NICKS OR BURRS.0 INCH DEEP OR LESS MY BE BLENDED USING CROCUS CLOTH. BLENDED RE MUST HVE CORNER RDIUS OF.0-.09. CONNECTING RODS WITH V NOTCH SHPE NICKS EXCEEDING.0 INCH IN DEPTH MUST BE DISCRDED. 4.00 4.00 SECTION BB C LONGITUDINL XIS Ra B NO NICKS, GOUGES OR OTHER DMGE PERMISSIBLE ON BORE FTER BUSHING REMOVL B B BREK SHRP EDGES.0 INCH BY 4 o IF ORIGINL CHMFER WS COMPLETELY REMOVED BY BORING OR REMING OF REPLCEMENT BUSHING. 4.00 4.00 E.00.000 INCH MXIMUM TWIST (WITH NEW BUSHING). L SP CYLINDER POSITION NUMBER ON CONNECTING ROD ND CP (ROD TO BE INSTLLED ON CRNKSHFT WITH POSITION NUMBER UP ) BUSHING C L D BIG END C L SPLIT IN BUSHING IN THIS LOCTION 4º ± º FIGURE 7. CONNECTING ROD ND BUSHING DIMENSIONS ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 33 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

TBLE. CONNECTING ROD SPECIFICTIONS Engine Model O / IO / TSIO- 470 S Small Bore IO & TSIO-0 s IO-34 E-Series O-470-,4,,3, IO-470- C,G,J,K,P,R 30 Large Bore IO-40-&B Con-Rod Part Number 90 Superceded 000 004 4999 4778 479 4478 3 4793 430 48 Forging Part Number 4 304 4 304 4 9 Nut P/N Bolt P/N 4490 Nut 98 Bolt 4487 Nut 90 Bolt 4487 Nut 99 Bolt Connecting Rod Bores Centerline Distance.30.70.30.70.3730.3770 Pin end I.D. No Bushing B.340.30.340.30.00.030 Bushing I.D. Bushing P/N C.7.9 308.3. 308.0000.000 3884 Crankpin Bore I.D. D.37.370.37.370.0.00 C/S end width E...83.87.. 30 Small Bore GO-300 O-00 / O-300 C-90 / C-4 IO / TSIO0 Large Bore TSIO-0-BE L / TSIO-0-E TSIO-0-CE IO / TSIO-0 s TSIOL-0 s I0-0-B9, B33, B37, C, C9, C30 TSIO-0-UB7 GTSIO-0 s 4794 43 8 479 43 3084 9 00 447 447 90 000 4480 43 9 00 448 9 00 4440 90 Superceded 004 4 9 4 9 308 4 304 4 304 4 304 4 304 304 4487 Nut 99 Bolt 4487 Nut 99 Bolt 4490 Nut 98 Bolt 4490 Nut 98 Bolt 4490 Nut 98 Bolt 4490 Nut 98 Bolt 4490 Nut 98 Bolt.3730.3770.3730.3770.30.70.30.70.30.70.30.70.30.70.00.030.00.030.340.30.340.30.340.30.340.30.340.30.0000-.000 3884.930-.93 309.7.9 308.7.9 308.7.9 308.7.9 308.7.9 308.0.00.0.00.37.370.37.370.37.370.37.370.37.370.30.30.30.30 Connecting Rod ssembly must utilize correspondingly identified bolt and nut from Table. The most current part number connecting rod nuts and bolts must not be used on or with superceded part number nuts and bolts..4.4...4.4.4.4.. ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 34 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34

Current part number (serviceable) connecting rods must use the most current part number connecting rod new nuts and bolts. The most current connecting rod new nut and bolt part numbers can be used with old (serviceable) connecting rods of the same style. (Hex head rod bolts must replace hex head rod bolts, contour head rod bolts must replace contour head rod bolts.) See the most recent revision of TCM Service Bulletin SB9-7 for connecting rod nut torque specifications. Used in balanced set P/N 93. P/N 3084 connecting rod (identified by forging number 308), 39 (Identified by forging number ) and 30 (lso identified by forging number ) must be serviced as follows: a) P/N 303 bolt, P/N 4804 or P/N 40 nut and P/N 399 cotter pin, torqued to value specified in latest revision of TCM SB9-7 P/N 3 connecting rod assemblies utilizing the P/N 304 forging must be serviced in accordance with Table of this bulletin. P/N 3 Connecting rod assemblies utilizing the P/N 4074 forging must be serviced as follows: a) P/N 397 connecting rod bolt, P/N 4804 nut and P/N MS4-3 cotter pin, torqued to the value specified in the latest revision of TCM SB9-7. Warning If the hardware listed in (a) of note or note 7 is not available, the connecting rod must be changed to a serviceable later configuration rod with the appropriate P/N hardware. ISSUED REVISED PGE NO REVISION MO DY YER MO DY YER 3 of 3 0 0 000 0 9 004 P.O. Box 90 Mobile labama 30-438-34