Caterpillar Cat 312C and 312C L Excavator (Prefix CBT) Service Repair Manual Instant Download

Service Repair Manual Models 312C and312C L Excavator

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 1/16 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 312C L EXCAVATOR CBT Configuration: 312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engine Disassembly and Assembly 312C Excavator Machine Systems Media Number -RENR7476-00 Publication Date -01/07/2003 Date Updated -22/07/2003 i06252122 Swing Drive - Disassemble - Older Style SMCS - 5459-015 Disassembly Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 1P-2420 Transmission Repair Stand 1 B 1P-0510 Driver Gp 1 C 5F-7343 Bearing Puller Gp 1 Start By: a. Remove the swing motor. b. Remove the swing drive. NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 2/16 Illustration 1 g01001554 1. Use a suitable lifting device to place the swing drive on Tooling (A). The weight of the swing drive is approximately 84 kg (185 lb). 2. Remove sun gear (1) from carrier assembly (2). 3. Remove carrier assembly (2) from ring gear (3). Illustration 2 g00986664 4. Use the following procedure to disassemble carrier assembly (2). a. Use a hammer and a punch to drive spring pin (5) into planetary shaft (4). Repeat for the remaining planetary shafts. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

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312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 3/16 Illustration 3 g00828757 b. Remove planetary shafts (4), planetary gears (7), and thrust washers (6) from the carrier assembly. c. Remove bearings (8) from planetary gears (7). d. Use a hammer and a punch to remove pins (5) from planetary shafts (4). Illustration 4 g00828759 5. Remove washer (9) from the carrier assembly. Illustration 5 g00828760 6. Remove sun gear (10) and ring gear (11) from the swing drive. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 4/16 Illustration 6 g01001555 7. Loosen bolt (12) until approximately one half of the threads are out of the shaft. Illustration 7 g00828763 8. Use a suitable lifting device to position remaining components with the pinion gear on top. The weight of the components is approximately 66 kg (145 lb). 9. Remove bolts (13). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 5/16 Illustration 8 g00828764 10. Use a suitable lifting device to position carrier assembly (14) and swing drive housing (15) in a suitable press. Support the bottom of swing drive housing (15) on suitable cribbing. Illustration 9 g01439357 11. Carefully press bolt (12) in order to force the pinion shaft, the bearings, and the cage out of carrier assembly (14) and swing drive housing (15). 12. Remove carrier assembly (14) with the bearing cone from the swing drive housing. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 6/16 Illustration 10 g01001559 13. Use Tooling (B), Tooling (C), and a suitable press to remove carrier assembly (14) from bearing cone (18). Support Tooling (C) with suitable blocks. Place support under carrier assembly (14) in order to prevent carrier assembly (14) from dropping to the floor. Illustration 11 g00828771 Illustration 12 g00828772 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 7/16 14. Use the following procedure to disassemble carrier assembly (14). a. Use a hammer and a punch to drive spring pin (20) into planetary shaft (19). Repeat for the remaining planetary shafts. b. Remove planetary shafts (19), thrust washers (21), and planetary gears (22) from the carrier assembly. c. Remove bearings (23) from planetary gears (22). d. Use a hammer and a punch to remove spring pins (20) from planet shafts (19). Illustration 13 g00828774 15. Remove retainer (24) from carrier assembly (14). Illustration 14 g00828775 16. Remove spacers (25) and (26) from the remaining pinion and bearing assembly. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 8/16 Illustration 15 g01001562 17. Place the pinion and bearing assembly in a suitable press. Use Tooling (B) and Tooling (C) to remove bearing cone (28) from shaft (27). Place support under shaft (27) in order to prevent shaft (27) from dropping to the floor. Illustration 16 g00828778 18. Remove cage (29) from shaft (27). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 9/16 Illustration 17 g00828781 19. Remove lip seal (30) from cage (29). Illustration 18 g00828782 20. Remove bearing cup (31) from swing drive housing (15). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T E... 10/16 Illustration 19 g01001563 21. Flip swing drive housing (15) and remove bearing cup (32). Newer Style Table 2 Required Tools Tool Part Number Part Description Qty A 5F-7343 Bearing Puller Gp 1 Start By: a. Remove the swing motor. b. Remove the swing drive. NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T E... 11/16 Illustration 20 g03576636 1. Use a suitable lifting device to place the swing drive on table. The weight of the swing drive is approximately 84 kg (185 lb). 2. Remove sun gear (1) from carrier assembly (2). 3. Remove carrier assembly (2) from ring gear (3). Illustration 21 g03576957 4. Remove retaining ring (4). Remove thrust washer (5) and planetary gear (6). Illustration 22 g03576977 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T E... 12/16 Illustration 23 g03576996 5. Remove bearing assembly (6) and thrust washer (7). 6. Drive spring pin (9) into shaft (8). Remove shaft (8) from carrier assembly (2). 7. Repeat Steps 4 through 6 for the remaining planetary gears. Illustration 24 g03577121 Illustration 25 g03577158 8. Remove sun gear (10) from the planetary carrier assembly. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T E... 13/16 9. Remove ring gear (11) from housing (12). Illustration 26 g03577196 10. Remove planetary carrier assembly (13) from the pinion shaft. Illustration 27 g03577357 11. Drive spring pin (15) into shaft (14) in order to remove shaft (14) and the planetary gear assembly. Illustration 28 g03577616 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T E... 14/16 12. Remove shaft (14), thrust washer (16), bearings (17), planetary gear (18), and thrust washer (19). Repeat Steps 11 through 12 for the remaining planetary gear assemblies. Illustration 29 g03577639 13. Turn the housing and the pinion shaft assembly over and remove plates (20). Illustration 30 g03578221 14. Remove retaining ring (21) in order to remove pinion shaft (22). Illustration 31 g03578226 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T E... 15/16 15. Use a suitable press to remove pinion shaft (22) from the bearings and housing assembly (12). Note: Take some precaution to prevent the pinion shaft from dropping out of the bottom. Illustration 32 g03578276 Illustration 33 g03578319 16. Remove bearing (23) and seal (24) from the housing. Illustration 34 g03578476 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T E... 16/16 17. Use Tooling (A) and a suitable press to remove bearing assembly (25) from pinion shaft (22). Support Tooling (A) with suitable blocks. Place support under pinion shaft (22) in order to keep from dropping to the floor. Copyright 1993 - 2020 Caterpillar Inc. Sun May 17 12:45:23 UTC+0800 2020 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 1/18 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 312C L EXCAVATOR CBT Configuration: 312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engine Disassembly and Assembly 312C Excavator Machine Systems Media Number -RENR7476-00 Publication Date -01/07/2003 Date Updated -22/07/2003 i07420705 Swing Drive - Assemble - Older Style SMCS - 5459-016 Assembly Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 1P-2420 Transmission Repair Stand 1 B 1P-0510 Driver Gp 1 D FT-1317 Sleeve 1 E 5P-3413 Pipe Sealant - F - Loctite High Flex Form-In-Place Gasket - 5P-8247 Hard Washer 2 5P-8245 Hard Washer 2 4C-5655 Threaded Adapter 2 8B-7550 Push-Puller Leg 2 1U-9895 Crossblock 1 G 3H-0465 Push-Puller Plate 4 6B-6682 Full Nut 2 9U-5017 Torque Wrench 1 0V-0375 Bolt 1 1F-7958 Full Nut 1 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 2/18 - Loctite 243 - NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. Illustration 1 g00828781 1. Apply a thin coating of Tooling (E) to the seal bore in cage (29). Install lip seal (30) in cage (29). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 3/18 Illustration 2 g00828778 2. Install shaft (27) in cage (29). Illustration 3 g00828784 3. Raise the temperature of bearing cone (28) and place bearing cone (28) on shaft (27). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 4/18 Illustration 4 g01001588 4. Use Tooling (B), Tooling (D), and a suitable press to install bearing cone (28) on the shaft. Illustration 5 g01001563 5. Lower the temperature of bearing cup (32). Install bearing cup (32) in swing drive housing (15). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 5/18 Illustration 6 g00828782 6. Flip swing drive housing (15). Lower the temperature of bearing cup (31). Install bearing cup (31) in swing drive housing (15). Illustration 7 g00828788 7. Clean the mating surfaces of swing drive housing (15) and cage (29). Apply a thin coating of Tooling (F) to the mating surfaces of cage (29) and swing drive housing (15). 8. Install the assembled shaft (27) and cage (29) in swing drive housing (15). 9. Apply Tooling (H) to the threads of bolts (13). Install bolts (13). Tighten bolts (13) to torque of 33 3 N m (25 2 lb ft). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 6/18 Illustration 8 g00828789 10. Install spacers (25) and (26). Illustration 9 g01001808 11. Set up Tooling (G), as shown. Check and record the seal drag torque. Note: Make sure that the shaft does not turn when the seal drag torque is checked. Illustration 10 g00828772 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 7/18 Illustration 11 g00828771 12. Use the following procedure to assemble the carrier assembly: a. Install bearing (23) in planetary gear (22). b. Place thrust washer (21) on each side of the assembled bearing and planetary gear. c. Slide thrust washers (21), bearing (23), and planetary gear (22) into the carrier assembly. d. Install planetary shaft (19) so that the hole for spring pin (20) aligns with the hole in the carrier assembly. e. Use a hammer to drive spring pin (20) into the carrier assembly and the planetary shaft. f. Repeat Steps 12.a through 12.e for the remaining planetary gear sets. Illustration 12 g00828792 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

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312C & 312C L Excavators CBT00001-UP (MACHINE) POWERED BY 3054T Engi... 8/18 Illustration 13 g01001836 13. Raise the temperature of bearing cone (18). Use Tooling (B) and Tooling (D) to install bearing cone (18) on carrier assembly (14). 14. Use a suitable lifting device to place swing drive housing (15) with shaft (27), cage (29), and bearing cone (28) on Tooling (A). Refer to Illustration 7 in order to view the assembly. Illustration 14 g01001846 15. Install carrier assembly (14) into swing drive housing (15). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/5/17

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