Caterpillar Cat 340D L Excavator (Prefix JTN) Service Repair Manual (JTN00001 and up)

1. Service Repair Manual Models 340DL Excavator

2. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 1/8 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 340D L EXCAVATOR JTN Configuration: 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine Disassembly and Assembly 330D, 336D, 336D2, 340D and 340D2 Excavators and 336D MHPU Mobile Hydraulic Power Unit Machine Systems Media Number -RENR8648-30 Publication Date -01/03/2015 Date Updated -15/08/2018 i06560081 Swing Drive - Disassemble SMCS - 5459-015 Disassembly Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 138-7573 Link Bracket 2 B 1U-8221 Nylon Sling 1 C 5P-5197 Pliers 1 Start By: a. Remove the swing drive. Refer to Disassembly and Assembly, "Swing Drive - Remove" . NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

3. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 2/8 Dispose of all fluids according to local regulations and mandates. Illustration 1 g00518369 1. Position the swing drive on suitable cribbing, as shown. The weight of the swing drive is approximately 281 kg (620 lb). 2. Put an alignment mark on the cover and the housing of the swing drive for assembly purposes. 3. Remove bolts (1) and cover (2). 4. Install Tooling (A) to cover (2). Illustration 2 g00518372 5. Use a suitable lifting device and Tooling (A) to remove cover (2) from the ring gear of the swing drive. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

4. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 3/8 Illustration 3 g00518397 6. Use two people to remove carrier assembly (3). The weight of the carrier assembly is approximately 23 kg (50 lb). 7. Use the following procedure to disassemble carrier assembly (3). Illustration 4 g00518398 Illustration 5 g00518400 a. Remove sun gear (4) from carrier assembly (3). b. Drive spring pin (6) into planetary shaft (5) with a hammer and a punch. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

5. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 4/8 c. Remove planetary shaft (5), thrust washers (9), and planetary gear (7) from the carrier assembly. d. Remove bearing (8) from planetary gear (7). e. Remove spring pin (6) from planetary shaft (5) with a hammer and a punch. f. Repeat Steps 7.a through 7.e to remove the other three planetary gears from the carrier assembly. Illustration 6 g00518543 g. Remove retaining ring (10) with a screwdriver. Remove gear (11) from carrier (3). Illustration 7 g00518549 h. Remove retaining ring (12) from gear (11). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

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7. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 5/8 Illustration 8 g00518551 8. Remove retaining ring (15) that holds carrier assembly (13) in position. 9. Remove spacer (14) from carrier assembly (13). Illustration 9 g00518552 10. Slide a piece of steel bar stock between the planetary gears in carrier assembly (13), as shown. Make sure that the steel bar stock is centered in the carrier assembly. Fasten Tooling (B) and a suitable lifting device to the steel bar stock, as shown. Slowly lift carrier assembly (13) from the swing drive housing. The weight of carrier assembly (13) is approximately 39 kg (86 lb). 11. Use the following procedure to disassemble carrier assembly (13). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

8. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 6/8 Illustration 10 g00518553 Illustration 11 g00518555 a. Drive spring pin (16) into planetary shaft (17) with a hammer and a punch. b. Remove planetary shaft (17), thrust washers (20), and planetary gear (18) from the carrier assembly. c. Remove bearings (19) from planetary gear (18). d. Remove spring pin (16) from planetary shaft (17) with a hammer and a punch. e. Repeat Steps 11.a through 11.d to remove the other three planetary gears from the carrier assembly. Illustration 12 g00518581 12. Use two people to remove ring gear (21) from the swing drive housing. The weight of the ring gear is approximately 39 kg (86 lb). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

9. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 7/8 Illustration 13 g00518589 13. Use Tooling (C) to remove retaining ring (22). Illustration 14 g00518595 14. Loosen, but do not remove bolts (23) that secure cage (24) to the swing drive housing. Illustration 15 g00518604 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

10. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 8/8 Illustration 16 g03774521 15. Place swing drive housing (25) in a suitable press, as shown. The combined weight of the swing drive housing (25), the pinion shaft (28) and the bearing cage (24) is approximately 136 kg (300 lb). 16. Place suitable cribbing directly under the pinion shaft to prevent pinion shaft (28) from falling when cage (24) is pressed out of the swing drive housing. 17. Remove and discard bolts (23) that secure cage (24) to the swing drive housing. Carefully press cage (24) and pinion shaft (28) as a unit out of swing drive housing (25). Discard pinion shaft (28), cage (24), bearing (29), sleeve (27), and bearing (26) as an assembly. Copyright 1993 - 2020 Caterpillar Inc. Wed Dec 2 11:53:04 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... 2020/12/2

11. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 1/10 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 340D L EXCAVATOR JTN Configuration: 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine Disassembly and Assembly 330D, 336D, 336D2, 340D and 340D2 Excavators and 336D MHPU Mobile Hydraulic Power Unit Machine Systems Media Number -RENR8648-30 Publication Date -01/03/2015 Date Updated -15/08/2018 i06939513 Swing Drive - Assemble SMCS - 5459-016 Assembly Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 5P-5197 Pliers 1 B 138-7574 Link Brackets 2 C 138-7575 Link Bracket 3 Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

12. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 2/10 Illustration 1 g00869899 1. Install lip seals (32) and O-ring seal (33) in bearing cage (29). Illustration 2 g00870134 Note: Lubricate the seals and the seal surface of the shaft before you install the cage assembly. 2. Carefully install cage (29) on shaft (31). Illustration 3 g00870142 3. Raise the temperature of bearing (36) to 135 °C (275 °F) and use two people to install the bearing on shaft (31). The weight of bearing (36) is approximately 35 kg (77 lb). 4. Install spacer (35) on shaft assembly (31). Install the spacer with relief against bearing (36). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

13. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 3/10 Illustration 4 g00870160 5. Raise the temperature of bearing (34) to 135 °C (275 °F). Install the bearing on shaft (31) and against spacer (35). Illustration 5 g00870169 6. Use Tooling (A) to install retaining ring (28) on shaft (31) and against bearing (34). Illustration 6 g01041406 7. Install shaft assembly (31) in swing drive housing (16). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

14. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 4/10 a. Apply 5P-3931 Anti-Seize Compound on the inside diameter of swing drive housing (16). b. Lower the temperature of shaft assembly (31). c. Attach Tooling (C) and a suitable lifting device to the shaft assembly. d. Install the shaft assembly into swing drive housing (16). Bearing (34) must be within the bore of the swing drive housing. e. Remove Tooling (C) and the suitable lifting device from the shaft assembly. Attach Tooling (C) and the suitable lifting device to the swing drive housing. f. Lift the swing drive vertically. Use a hammer and a drift to align bearing (34) in the lower bore of the swing drive housing. When the bearing is properly aligned in the bore, shaft assembly (31) will drop into the proper position within the swing drive housing. Illustration 7 g00870264 8. Apply 1U-8846 Sealant on the threads of bolts (30). 9. Install bolts (30) and washers in bearing cage (29) and swing drive housing (16). Illustration 8 g00869483 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

15. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 5/10 Illustration 9 g00870281 10. Install bearings (24) and (26) in gear (25). 11. Install gear (25) and washers (23) and (27) in carrier (20). 12. Lower the temperature of shaft (22). Install the shaft in carrier assembly (20). 13. Install pin (21) in the carrier assembly and the shaft. 14. Use a hammer and a center punch to stake the pin in the carrier housing. 15. Repeat Steps 10 through Steps 14 on the remaining gear assemblies. Illustration 10 g00869464 16. Use a suitable lifting device to install carrier assembly (20). The weight of carrier assembly (20) is approximately 68 kg (150 lb). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

16. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 6/10 Illustration 11 g00869460 17. Install retaining ring (19). Illustration 12 g00869406 18. Install spacer (17) in carrier assembly (18). Illustration 13 g00869390 19. Make sure that the mating surfaces of ring gear (15) and swing drive housing (16) are thoroughly clean. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

17. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 7/10 20. Apply 1U-8846 Gasket Sealant to the face of swing drive housing (16) and the face of ring gear (15). 21. Use Tooling (B) and a suitable lifting device to install ring gear (15) in swing drive housing (16). The weight of ring gear (15) is approximately 80 kg (175 lb). Illustration 14 g00869383 22. Install retaining ring (14) into the sun gear. Illustration 15 g00869377 23. Install sun gear (13) in carrier assembly (4). Install upper retaining ring (12). 24. Assemble carrier assembly (4). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

18. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 8/10 Illustration 16 g00869315 a. Apply clean SAE 30W oil on bearing (10). Install bearing (10) in planetary gear (9). b. Install thrust washer (8) on one side of planetary gear (9). c. Install thrust washer (11) on the other side of planetary gear (9). d. Use a deburring tool to remove the metal burr from the openings in the carrier. e. Install planetary gear (9) and the thrust washers in carrier assembly (4). Illustration 17 g00869309 f. Install planetary shaft (7) through the gear assembly into the carrier assembly. Make sure that the spring pin hole in the planetary shaft is in alignment with the spring pin hole in the carrier. Illustration 18 g00703700 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

19. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 9/10 g. Drive spring pin (6) into shaft (7). Orient the split in spring pin (6) vertically to the carrier. Align the split in the spring pin to the top or the bottom. Make a stake mark on each side of the spring pin hole in the carrier. Each stake mark should be approximately 2.25 ± 0.75 mm (0.09 ± 0.03 inch) from the outside diameter of the spring pin hole. h. Repeat Steps 24.a through 24.g to install the other three planetary gears in the carrier. Illustration 19 g00869294 25. Use two people to install carrier assembly (4) in the ring gear. The weight of the carrier assembly is approximately 36 kg (80 lb). 26. Install spacer (5) in carrier assembly (4). Illustration 20 g00869281 27. Install sun gear (3) in carrier assembly (4). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

20. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP5... 10/10 Illustration 21 g00869266 28. Make sure that the mating surfaces of the ring gear and cover (2) are thoroughly clean. 29. Apply 1U-8846 Gasket Sealant on the flange surface of the ring gear and cover (5). 30. Install cover (2) and bolts (1). End By: a. Install the swing drive. Refer to Disassembly and Assembly, "Swing Drive - Remove and Install". Copyright 1993 - 2020 Caterpillar Inc. Wed Dec 2 11:54:01 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... 2020/12/2

21. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 1/3 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 340D L EXCAVATOR JTN Configuration: 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine Disassembly and Assembly 330D, 336D, 336D2, 340D and 340D2 Excavators and 336D MHPU Mobile Hydraulic Power Unit Machine Systems Media Number -RENR8648-30 Publication Date -01/03/2015 Date Updated -15/08/2018 i07192381 Swing Drive - Install SMCS - 5459-012 Installation Procedure Table 1 Required Tools Tool Part Number Part Description Qty 132-8223 110 volt Power Pack 1 A 1U-6221 Torque Wrench 1 132-8143 36 mm Hex Link 1 B 439-3939 Link Bracket As 4 Forcing Bolt M24 x 3 by 5 inch C - 2 D - Loctite C5A Copper Anti-Seize - E 1U-8846 Gasket Sealant 1 1. Apply Tooling (D) on the locating pin and the pin bore in the main frame. Apply Tooling (E) on the mating surface of the main frame and the swing drive housing. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

22. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 2/3 Illustration 1 g00875735 2. Attach Tooling (B) and a suitable lifting device to swing drive (2), as shown. The weight of swing drive (2) is approximately 510 kg (1125 lb). Install swing drive (2) into the original position. Be careful not to damage the pinion gear. Note: During installation, the locating pin for the swing drive can come out of the swing drive housing. The locating pin can be installed with a hammer after the swing drive is in place. Illustration 2 g01206242 3. Use Tooling (A) to install bolts (1) that secure the swing drive to the main frame. 4. Before assembly, remove compound, oil, and dust from female threads, then apply Tooling (D) to the threads of bolts (1). 5. Tighten bolts (1) in an alternating sequence to a torque of 250 ± 25 N·m (184 ± 18 lb ft). Turn an additional angle of 45 ± 5 degrees. Refer to Service Magazine , M0083843 , "An Improved Bolt Tightening Procedure for the Critical Joints Is Now Used on all Excavators" for more detailed information. 6. Fill the swing drive with oil. Refer to Operation and Maintenance Manual, "Swing Drive Oil - Change". End By: https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

23. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 3/3 a. Install the swing motor. Refer to Disassembly and Assembly, "Swing Motor - Install" . Copyright 1993 - 2020 Caterpillar Inc. Wed Dec 2 11:54:59 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... 2020/12/2

24. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 1/3 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 340D L EXCAVATOR JTN Configuration: 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine Disassembly and Assembly 330D, 336D, 336D2, 340D and 340D2 Excavators and 336D MHPU Mobile Hydraulic Power Unit Machine Systems Media Number -RENR8648-30 Publication Date -01/03/2015 Date Updated -15/08/2018 i02386587 Swing Gear and Bearing - Remove SMCS - 7063-011 Removal Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 138-7576 Link Bracket 4 Hydraulic Pump and Motor (115 V 50/60 Hz Single Phase)(1) 132-8223 1 B 1U-6221 Hydraulic Torque Wrench 1 132-8143 36 mm Hex Link 1 (1)132-8231 Hydraulic Pump and Motor (220 V 50/60 Hz Single Phase) is also available. Start By: a. Remove the undercarriage frame. Refer to Disassembly and Assembly, "Upper Frame and Undercarriage Frame - Separate". 1. Remove all of the grease from the swing gear and bearing. Put the grease in a suitable container for storage or disposal. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

25. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 2/3 Illustration 1 g00520664 2. Put an alignment mark on swing gear and bearing (1) and on the undercarriage frame assembly for assembly purposes. Attach Tooling (A) and a suitable lifting device to swing gear and bearing (1), as shown. Apply slight lifting tension to the swing gear and bearing. Illustration 2 g00520670 3. Use Tooling (B) in order to remove bolts (2) and the spacers that hold swing gear and bearing (1) to the undercarriage frame. 4. Remove swing gear and bearing (1). The weight of the swing gear and bearing (1) is approximately 280 kg (615 lb). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

26. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 3/3 Illustration 3 g00721855 Note: Inner dust seal (3) and outer dust seal (4) may have been installed dry in the swing gear and bearing or inner dust seal (3) and outer dust seal (4) may have been bonded to the swing gear and bearing. 5. Remove inner dust seal (3) and outer dust seal (4) from the swing gear and bearing. 6. Clean the seal grooves of the inner dust seal and the outer dust seal with a fine grit sandpaper. Use a cleaning solvent to clean the sealing grooves. Make sure that the seal grooves are thoroughly clean and dry prior to installing the new dust seals. Copyright 1993 - 2020 Caterpillar Inc. Wed Dec 2 11:55:56 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... 2020/12/2

27. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 1/6 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 340D L EXCAVATOR JTN Configuration: 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine Disassembly and Assembly 330D, 336D, 336D2, 340D and 340D2 Excavators and 336D MHPU Mobile Hydraulic Power Unit Machine Systems Media Number -RENR8648-30 Publication Date -01/03/2015 Date Updated -15/08/2018 i07191587 Swing Gear and Bearing - Install SMCS - 7063-012 Installation Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 439-3941 Link Bracket As 4 132-8223 Hydraulic Pump and Motor (115 V 50/60 Hz Single Phase)(1) 1 B 1U-6221 Hydraulic Torque Wrench 1 132-8143 36 mm Hex Link 1 C - Loctite 435 - D 2P-9066 Lubricant 1 E 1U-8846 Gasket Sealant 1 F - Loctite C5A Copper Anti-Seize - (1)132-8231 Hydraulic Pump and Motor (220 V 50/60 Hz Single Phase) is also available. Note: If the inner dust seal (3) and the outer dust seal (4) are installed dry, the new dust seals should be installed dry in the swing gear and bearing. Note: If the inner dust seal and the outer dust seal are bonded to the swing gear and bearing, the new dust seals should be bonded to the swing gear and bearing. Note: Perform Steps 1.a through 1.j to install the new dry dust seals. Note: Perform Steps 2.a through 2.p to install the new dust seals that are bonded to the swing gear and bearing. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

28. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 2/6 Illustration 1 g00636223 1. If inner dust seal (3) and outer dust seal (4) were installed dry, use the following procedure to install the new dust seals: a. Use a wire brush to thoroughly clean the grooves for the dust seal of the swing gear and bearing. Make sure that all the dirt and foreign material has been removed. b. Wash the grooves for the dust seal in a suitable solvent that will not leave an oily residue. c. Make sure that the grooves for the dust seal in the swing gear and bearing are thoroughly clean and dry prior to installation of the dust seals. d. Cut one end of inner dust seal (3) at a 90 degree angle. Use a blunt tool to install the inner dust seal in the seal groove of the swing gear and bearing. e. Install the seal so that the lip of the seal is facing in the direction that is shown. Refer to Illustration 1. f. After the inner dust seal is installed in the seal groove, measure the seal and cut the remaining end of the inner dust seal at a 90 degree angle. Install the remaining end of the inner dust seal in the seal groove. g. Make sure that the inner dust seal is seated properly in the seal groove, all the way around the swing gear and bearing. Also, make sure that there is no gap between the ends of the inner dust seal. h. Pull each end of the inner dust seal out of the seal groove of the swing gear and bearing approximately 50.8 mm (2.00 inch). Apply Tooling (C) to each end of the inner dust seal to bond the seals together. i. Immediately reinstall the inner dust seal in the seal groove of the swing gear and bearing. Again, make sure that the entire inner dust seal is properly seated in the seal groove of the swing gear and bearing. No gap should exist between the ends of the inner dust seal. j. To ensure that the lip of inner dust seal has not adhered to the top of the bearing at the seal joint, run a dull putty knife between the lip of the seal and the bearing at the seal joint. k. Follow the procedure in Steps 1.a through 1.j to install outer dust seal (4) in the swing gear and bearing. Refer to Illustration 1 for proper seal orientation in the swing gear and bearing. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

29. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 3/6 2. If inner dust seal (3) and outer dust seal (4) were bonded in the swing gear and bearing, use the following procedure to install the new dust seals: a. Thoroughly clean all the dirt and foreign material from the grooves for the dust seal in the swing gear and bearing with a wire brush. b. Wash the grooves for the dust seal in a suitable solvent that will not leave an oily residue. c. Make sure that the grooves for the dust seals in the swing gear and bearing are thoroughly clean and dry prior to installation of the dust seals. Note: Install inner dust seal (3) and outer dust seal (4) in the swing gear and bearing in small increments, because Tooling (C) cures very quickly. d. Cut one end of inner dust seal (3) at a 90 degree angle. e. Start applying Tooling (C) 50.8 mm (2.00 inch) from the cut end of the seal. Apply Tooling (C) to the seal in 152.4 mm (6.00 inch) increments. f. Immediately use a blunt tool to install only the bonded portion of the inner dust seal in the seal groove of the swing gear and bearing. Make sure that the dust seal is seated properly in the seal groove. g. Install the seal so that the lip of the seal is facing in the direction that is shown. Refer to Illustration 1. h. To ensure that the inner dust seal has not adhered to the bearing, run a dull putty knife between the lip of the seal and the bearing. i. Apply Tooling (C) to the next 152.4 mm (6.00 inch) of the seal. Immediately use a blunt tool to install only the bonded portion of the inner dust seal in the seal groove of the swing gear and bearing. j. Make sure that the inner dust seal is seated properly in the seal groove. Ensure that the inner dust seal has not adhered to the bearing. Note: Do not install the last 152.4 mm (6.00 inch) of the inner dust seal. k. Repeat Steps 2.i through 2.j until the dust seal is installed. l. Measure the inner dust seal and cut the remaining end of inner dust seal (3) at a 90 degree angle. Install the last 152.4 mm (6.00 inch) of seal in the seal groove dry. m. Make sure that the inner dust seal is properly seated in the seal groove and that there is no gap between the seal ends. Carefully remove both loose ends of the inner dust seal out of the seal groove. n. Apply Tooling (C) to the loose ends of the seal. o. Immediately use a blunt tool to reinstall the seal ends in the seal groove. Again, make sure that the inner dust seal is properly seated in the seal groove, and that no gap existed between the ends of the seal. p. To ensure that the inner dust seal has not adhered to the top of the bearing, run a dull putty knife around the seal. q. Follow the procedure in Steps 2.a through 2.p to install outer dust seal (4) in the swing gear and bearing. Refer to Illustration 1 for proper seal orientation in the swing gear and bearing. 3. Lubricate the swing gear and bearing with grease. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

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31. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 4/6 Illustration 2 g00520664 Illustration 3 g00520674 Note: Clean the mating surface for the swing gear and bearing on the undercarriage frame assembly. 4. Apply Tooling (E) on the mating surface for the swing gear and bearing of the undercarriage frame assembly. 5. Fasten Tooling (A) and a suitable lifting device to swing gear and bearing (1), as shown. Refer to Illustration 2. The weight of swing gear and bearing (1) is approximately 660 kg (1455 lb). 6. Place the swing gear and bearing in the swing gear and bearing's original position on the undercarriage frame assembly. 7. Make sure that the stamp "S" on the inner race is in the position that is shown, relative to the undercarriage frame assembly and the stopper on the outer race. Refer to Illustration 3. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

32. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 5/6 Illustration 4 g00520670 8. Apply a thin coat of Tooling (F) on the threads of bolts (2). Install the spacers and bolts (2) that secure the swing gear and bearing to the undercarriage frame assembly. Note: Some machines use bolts that are plated with Dacromet. Dacromet bolts appear silver, gray in color. Do not apply Tooling (F) to the threads of Dacromet bolts. Make sure that the bolt holes are clean and dry when Dacromet bolts are used. Note: Torque for bolts (2) is 1000 ± 125 N·m (738 ± 92 lb ft) on 345 excavators. Note: Torque for bolts (2) is 250 ± 25 N·m (184 ± 18 lb ft) and turn an additional angle of 55 ± 5 degrees on 336 excavators. 9. Use Tooling (B) to tighten bolts (2) to a torque of 900 ± 100 N·m (665 ± 75 lb ft). 10. Refer to Service Magazine , M0083843 , "An Improved Bolt Tightening Procedure for the Critical Joints Is Now Used on all Excavators" for more detailed information. NOTICE Improper lubrication can cause damage to machine components. To avoid damage, make sure that the proper amount of grease is applied to the swing drive. When the amount of grease in the compartment becomes too large, the agitation loss becomes large, thereby accelerating grease deterioration. Grease deterioration can cause damage to the pinion gear of the swing drive and swing internal gear. Not enough grease will result in poor gear lubrication. 11. Add Tooling (D) to the swing gear and bearing after the installation. Reference: Refer to Operation and Maintenance Manual, "Refill Capacities" for the capacity of the swing gear and bearing. Reference: Refer to Operation and Maintenance Manual, "Swing Gear - Lubricate" for lubricating the swing gear and bearing. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/12/2

33. 340D L Excavator JTN00001-UP (MACHINE) POWERED BY C9 Engine(SEBP565... 6/6 Reference: Refer to Operation and Maintenance Manual, "Maintenance Interval Schedule" for the schedule for lubricating the swing gear and bearing. End By: a. Install the undercarriage frame assembly. Refer to Disassembly and Assembly, "Undercarriage Frame - Install" in this manual. Copyright 1993 - 2020 Caterpillar Inc. Wed Dec 2 11:56:54 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... 2020/12/2

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