This document provides disassembly and assembly instructions for the final drive of a 349E L excavator. It includes specifications for the components, required tools, assembly procedures with illustrations, and torque specifications. The procedures describe cleaning and applying lubricants to parts, measuring clearances, installing bearings and seals, and adjusting shims to set proper spacing before tightening bolts and setscrews to specified torques.
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𝘼𝙣𝙩𝙞𝙦𝙪𝙚 𝙋𝙡𝙖𝙨𝙩𝙞𝙘 𝙏𝙧𝙖𝙙𝙚𝙧𝙨 𝙞𝙨 𝙫𝙚𝙧𝙮 𝙛𝙖𝙢𝙤𝙪𝙨 𝙛𝙤𝙧 𝙢𝙖𝙣𝙪𝙛𝙖𝙘𝙩𝙪𝙧𝙞𝙣𝙜 𝙩𝙝𝙚𝙞𝙧 𝙥𝙧𝙤𝙙𝙪𝙘𝙩𝙨. 𝙒𝙚 𝙝𝙖𝙫𝙚 𝙖𝙡𝙡 𝙩𝙝𝙚 𝙥𝙡𝙖𝙨𝙩𝙞𝙘 𝙜𝙧𝙖𝙣𝙪𝙡𝙚𝙨 𝙪𝙨𝙚𝙙 𝙞𝙣 𝙖𝙪𝙩𝙤𝙢𝙤𝙩𝙞𝙫𝙚 𝙖𝙣𝙙 𝙖𝙪𝙩𝙤 𝙥𝙖𝙧𝙩𝙨 𝙖𝙣𝙙 𝙖𝙡𝙡 𝙩𝙝𝙚 𝙛𝙖𝙢𝙤𝙪𝙨 𝙘𝙤𝙢𝙥𝙖𝙣𝙞𝙚𝙨 𝙗𝙪𝙮 𝙩𝙝𝙚 𝙜𝙧𝙖𝙣𝙪𝙡𝙚𝙨 𝙛𝙧𝙤𝙢 𝙪𝙨.
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2. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 349E L EXCAVATOR MZW
Configuration: 349E L Excavators MZW00001-UP (MACHINE) POWERED BY C13 Engine
Disassembly and Assembly
349E Excavator Machine Systems
Media Number -KENR9848-04 Publication Date -01/10/2012 Date Updated -23/10/2012
i07287647
Final Drive - Assemble
SMCS - 4050-016
Specifications
Illustration 1 g03844910
Table 1
Specification for 480-7429 Final Drive Gp
Item Qty Part Specification Description
1 20
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3. 143-0811
Bolt
Before assembly, the contact surfaces of the bolts, the washers, and
the tightened parts must be clean and free from protective coating and
oil.
Torque to 120 ± 20 N·m (89 ± 15 lb ft).
2 2
096-3216
Socket
Setscrew
Before assembly, apply blue Loctite 243 to the threads.
Torque to 105 ± 20 N·m (77 ± 15 lb ft).
3 28
7Y-5217
Bolt
Torque to 530 ± 70 N·m (391 ± 52 lb ft).
4 2
2R-0525
Bearing
Cup
Apply Loctite C5A Copper Anti-Seize to the inside diameter and
outside diameter of the mating parts.
5 1
255-2272
Duo-Cone
Seal Gp
Rubber toric seals and all surfaces in contact with the seals must be
clean and dry at assembly. Apply a thin layer of 6V-4876 Lubricant
on the surfaces of the metal seals that are in contact just before
installation. The metal seal must be assembled square with the bore.
The rubber toric seals must not bulge. The rubber toric seals must not
be twisted.
6 2
346-5556
Bearing
Cone
Apply Loctite C5A Copper Anti-Seize to the inside diameter and
outside diameter of the mating parts.
7 1
7Y-0808
Shim
As required, use the following shim to adjust the clearance (D) from
1.0 to 2.6 mm (0.04 to 0.10 inch).
Thickness is 1.6 (0.06 inch).
8 6
114-1541
Dowel Pin
Before assembly, apply Loctite C5A Copper Anti-Seize to the inside
diameter and outside diameter of the mating parts.
9 20
6V-8200
Bolt
Torque to 105 ± 20 N·m (77 ± 15 lb ft).
10 2
3E-2338
Pipe Plug
Torque to 80 ± 10 N·m (59 ± 7 lb ft).
12 As required, use the following shims. If two shims are required, install the thinner shim
next to coupling gear (11).
1
7Y-1472
Shim
Thickness is 0.15 ± 0.03 mm (0.006 ± 0.001 inch).
1
7Y-1473
Shim
Thickness is 0.30 ± 0.04 mm (0.012 ± 0.002 inch).
1
7Y-1474
Shim
Thickness is 0.40 ± 0.05 mm (0.016 ± 0.002 inch).
1
7Y-1475
Shim
Thickness is 0.50 ± 0.05 mm (0.020 ± 0.002 inch).
1
7Y-1476
Shim
Thickness is 0.60 ± 0.06 mm (0.024 ± 0.002 inch).
1 Thickness is 0.70 ± 0.06 mm (0.028 ± 0.002 inch).
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4. 7Y-1477
Shim
1
7Y-1478
Shim
Thickness is 0.80 ± 0.07 mm (0.031 ± 0.003 inch).
1
7Y-1479
Shim
Thickness is 1.00 ± 0.08 mm (0.039 ± 0.003 inch).
1
7Y-1480
Shim
Thickness is 1.60 ± 0.10 mm (0.063 ± 0.004 inch).
13 12
6V-8133
Bolt
Before assembly, the contact surfaces of the bolts, the washers, and
the tightened parts must be clean and free from protective coating and
oil. Apply blue Loctite 243 to the threads.
Torque to 900 ± 100 N·m (664 ± 74 lb ft).
Assembly Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
A 1P-2420 Transmission Repair Stand 1
B 138-7575 Link Brackets 2
C 4C-8359 Eyebolt 3
D 138-7574 Link Brackets 2
E 8T-9206 Duo-Cone Seal Installer As 1
F 5P-3931 Anti-Seize Compound -
G - Loctite 242 -
H - Loctite High Flex GM -
J 6V-2012 Depth Micrometer 1
K -
Bar Stock
2 inch x 2 inch by 17 inch
1
L 6V-7059 Micrometer 1
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5. Illustration 2 g02431679
1. Apply Tooling (F) to the outside surface of bearing cups (52). Install bearing cups (52). Make
sure that bearing cups (52) are properly seated.
2. Install O-ring seal (53).
Illustration 3 g02431696
3. Apply Tooling (F) to the inside surface of bearing cone (50). Install bearing cone (50).
Note: Make sure the contact surfaces of bolts (48) and plate (49) are free of oil and debris.
4. Install plate (49) and bolts (48).
5. Use Tooling (E) to install Duo-Cone seal (51). Install Duo-Cone seal (51).
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6. Illustration 4 g02431676
6. Apply Tooling (F) to dowel pins (46). Install dowel pins (46).
7. Use Tooling (E) to install Duo-Cone seal (47). Install Duo-Cone seal (47).
Illustration 5 g02431654
8. Attach Tooling (D) and a suitable lifting device to sprocket housing (40). The weight of
sprocket housing (40) is 127 kg (280 lb). Install sprocket housing (40).
9. Apply Tooling (F) to the outside surface of bearing cone (45). Install bearing cone (45).
Illustration 6 g02433384
10. Use Tooling (J) to measure Dimension (X) on coupling gear (43). Record Dimension (X).
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7. Illustration 7 g02433416
Illustration 8 g02433419
11. Use Tooling (K) and a suitable press to apply force to bearing cone (45). Apply a force of
10000 kg (22045 lb) to the top of Tooling (K). Rotate sprocket housing (40) to seat the
bearings.
12. Reduce the force on top of Tooling (K) to 3500 ± 350 kg (7715 ± 770 lb). Use Tooling (J) to
measure Dimension (W). Record Dimension (W).
Illustration 9 g02431653
13. Subtract Dimension (W) from Dimension (X) and record the difference as Dimension (V). The
correct shim thickness is Dimension (V). Use Tooling (L) to measure the correct thickness of
shims (44). The tolerance of Dimension (V) is 0 ± 0.05 mm (0 ± 0.002 inch). Install shims (44).
Note: Use a maximum of two shims (44). If two shims (44) are used to achieve the proper
dimension, install the thinner of the two shims toward the coupling gear.
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8. Illustration 10 g02431650
14. Apply Tooling (G) to the threads of bolts (42) Tighten bolts (42) evenly and tighten the bolts in
crisscross pattern. Install coupling gear (43) and bolts (42). Tighten bolts (42) to a torque of
900 ± 100 N·m (665 ± 75 lb ft).
15. Install O-ring seal (41) on sprocket housing (40).
Illustration 11 g02431649
16. Thoroughly clean the mating surface of sprocket housing (40) and ring gear (39).
17. Apply Tooling (H) on the mating surface of ring gear (39). Attach Tooling (C) and a suitable
lifting device to ring gear (39). The weight of ring gear (39) is approximately 82 kg (180 lb).
Install ring gear (39).
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9. Illustration 12 g02431642
Illustration 13 g00513451
18. Install thrust washer (38), bearings (37), planetary gear (36), thrust washer (35), planetary shaft
(33). Install spring pin (34) even with the outside surface of the carrier. Orient the split in the
spring pin horizontally to the carrier. Use a suitable punch and a suitable hammer to install
spring pin (34). Make a stake mark on each side of the spring pin hole in the carrier. Each stake
mark should be approximately 1.5 to 3.00 mm (0.59 to 0.118 inch) from the spring pin hole.
Repeat for the remaining planetary gears.
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10. Illustration 14 g02431641
19. Attach Tooling (C) and a suitable lifting device to carrier assembly (32). The weight of carrier
assembly (32) is approximately 64 kg (140 lb). Remove carrier assembly (32).
Illustration 15 g02431639
20. Install spacer (31).
Illustration 16 g02431636
21. Install sun gear (30) and retaining ring (29).
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11. Illustration 17 g02431600
Illustration 18 g00513451
22. Install thrust washer (28), bearing (27), planetary gear (26), thrust washer (25), planetary shaft
(23). Install spring pin (24) even with the outside surface of the carrier. Orient the split in the
spring pin horizontally to the carrier. Use a suitable punch and a suitable hammer to install
spring pin (24). Make a stake mark on each side of the spring pin hole in the carrier. Each stake
mark should be approximately 1.5 to 3.00 mm (0.59 to 0.118 inch) from the spring pin hole.
Repeat for the remaining planetary gears.
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12. Illustration 19 g02431519
23. Attach Tooling (C) and a suitable lifting device to carrier assembly (22). The weight of carrier
assembly (22) is approximately 45 kg (100 lb). Install carrier assembly (22).
24. Install spacer (21).
Illustration 20 g02431518
25. Install sun gear (20) and retaining ring (19).
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13. Illustration 21 g02431405
26. Install thrust washer (18), bearing (16), planetary gear (14), thrust washer (13), and retaining
ring (12). Repeat for the remaining planetary gears.
27. Install spacer (17).
Illustration 22 g01207864
28. Install carrier assembly (11).
29. Install sun gear (10).
Illustration 23 g02433426
30. Install ring gear (9) and socket head bolts (8).
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14. Illustration 24 g02433423
31. Use a suitable straight edge and Tooling (J) to measure Dimension (Y). Subtract the thickness
of the suitable straight edge from Dimension (Y) and record this measurement as Dimension
(R).
Illustration 25 g01207835
32. Install spacer (6).
Illustration 26 g02433424
33. Use a suitable straight edge and Tooling (J) to measure Dimension (Z). Subtract the thickness
of the suitable straight edge from Dimension (Z) and record this measurement as Dimension
(S).
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15. Illustration 27 g02433436
Illustration 28 g02431238
34. Subtract Dimension (R) from Dimension (S) and record this as Dimension (M). Add shims (7)
to achieve Dimension (M). Install shims (7).
Note: Dimension (M) is 1.00 to 2.60 mm (0.039 to 0.102 inch).
Illustration 29 g01207801
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16. 35. Apply Tooling (H) to the mating surface of cover (5) and the ring gear.
36. Attach Tooling (B) and a suitable lifting device to cover (5). The weight of cover (5) is
approximately 52 kg (115 lb). Install cover (5), the washers, and bolts (4). Tighten bolts (4) to a
torque of 900 ± 100 N·m (665 ± 75 lb ft).
Illustration 30 g01207796
37. Apply Tooling (G) to the threads of setscrews (3). Install setscrews (3) even with the cover.
Illustration 31 g02431160
38. Attach a suitable lifting device to the final drive, and turn final drive (2) over 180 degrees. The
weight of final drive (2) is approximately 590 kg (1300 lb).
39. Install coupling (1) in final drive (2).
End By:
a. Install the sprocket.
b. Install the final drive and the travel motor.
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Thu Sep 17 01:10:14 UTC+0800 2020
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17. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 349E L EXCAVATOR MZW
Configuration: 349E L Excavators MZW00001-UP (MACHINE) POWERED BY C13 Engine
Disassembly and Assembly
349E Excavator Machine Systems
Media Number -KENR9848-04 Publication Date -01/10/2012 Date Updated -23/10/2012
i04218589
Swivel - Remove and Install
SMCS - 5060-010
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 311-1362 Vacuum Gauge Gp 1
B 1U-7505 Hydraulic Jack 1
C 138-7575 Link Brackets 2
D - Loctite High Flex GM -
E - Loctite 242 -
Start By:
a. Release the hydraulic system pressure.
Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the
engine has been stopped. Serious injury can be caused if this pressure is
not released before any service is done on the hydraulic system.
Make sure all of the work tools have been lowered to the ground, and
the oil is cool before removing any components or lines. Remove the oil
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18. filler cap only when the engine is stopped, and the filler cap is cool
enough to touch with your bare hand.
Illustration 1 g02380216
1. Remove the cap from the hydraulic tank. Install Tooling (A) onto the hydraulic tank. Attach
an air supply hose to Tooling (A). Apply 276 to 414 kPa (40 to 60 psi) of air. This
procedure will pull vacuum on the hydraulic system.
Illustration 2 g01216634
Note: The weight of guards (1) can increase in weight due to debris on top of the guards (1).
2. Use Tooling (B) in order to remove guards (1). The weight of each of guards (1) is
approximately 30 kg (65 lb). Remove bolts (2) and guards (1).
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19. Illustration 3 g02398078
3. Disconnect hose assemblies (3) and (4).
Illustration 4 g02398079
4. Disconnect fitting (5) and hose assemblies (6) from swivel (7).
5. Remove bolts (9) and support (8).
Illustration 5 g02398080
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20. Illustration 6 g02398081
6. Disconnect hose assemblies (12). Remove fittings (11).
7. Remove clamp (16), bolts (13), retainer (14), and boot (15).
8. Attach Tooling (C) and a suitable lifting device to swivel (7). The weight of swivel (7) is
approximately 50 kg (110 lb). Remove bolts (10) and swivel (7).
Installation Procedure
1. Install swivel (7) in the reverse order of removal.
a. Apply Tooling (D) to the mating surface if swivel (7) and the undercarriage frame.
b. Apply Tooling (E) to the threads of bolts (10).
c. Tighten clamp (16) to a torque of 5 N·m (44 lb in).
d. Apply Tooling (E) to the threads of bolts (13). Tighten bolts (13) to a torque of
37 ± 4 N·m (27 ± 3 lb ft).
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
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21. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 349E L EXCAVATOR MZW
Configuration: 349E L Excavators MZW00001-UP (MACHINE) POWERED BY C13 Engine
Disassembly and Assembly
349E Excavator Machine Systems
Media Number -KENR9848-04 Publication Date -01/10/2012 Date Updated -23/10/2012
i04218709
Swivel - Disassemble
SMCS - 5060-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A
6V-3822 Bolt 2
6V-5839 Washer 2
1P-5546 Crossblock 1
5P-4168 Step Plate 1
5F-7366 Screw 1
B 1P-2420 Transmission Repair Stand 1
Start By:
a. Remove the swivel.
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22. Illustration 1 g02398556
Illustration 2 g02398558
1. Attach the swivel to Tooling (B). The weight of the swivel is approximately 50 kg (110 lb).
2. Remove bolts (1), cover (2), and O-ring seal (8).
3. Remove bolts (4), washers (5), and retainer (6) from rotor (10).
4. Use Tooling (A) in order to separate housing (9) from rotor (10). The weight of housing (9) is
approximately 23 kg (50 lb). The weight of rotor (10) is approximately 21 kg (46 lb).
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23. 5. Remove seals (3) and O-ring seals (7) from housing (9).
6. Remove plug (11).
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
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24. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 349E L EXCAVATOR MZW
Configuration: 349E L Excavators MZW00001-UP (MACHINE) POWERED BY C13 Engine
Disassembly and Assembly
349E Excavator Machine Systems
Media Number -KENR9848-04 Publication Date -01/10/2012 Date Updated -23/10/2012
i06563352
Swivel - Assemble
SMCS - 5060-016
Specifications
Illustration 1 g03334763
Typical example
Table 1
Specification for 234-4440 Swivel Gp, 225-4547 Swivel Gp, 162-4695 Swivel Gp, and 162-4696
Swivel Gp
Item Qty Part Specification Description
1 5 159-7782 Seal
Lubricate the O-ring seals and the shaft lightly with the lubricant that is
being sealed or with clean grease.
1/3
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26. 2 3 095-1625 O-
Ring Seal
Lubricate the O-ring seals and the shaft lightly with the lubricant that is
being sealed or with clean grease.
Assembly Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
B 1P-2420 Transmission Repair Stand 1
Illustration 2 g02398556
1. Install plug (11).
2. Lubricate seals (3) and O-ring seals (7) with lubricant that is being sealed. Install seals (3) and O-
ring seals (7) in housing (8).
3. Use a suitable press to install housing (9) over rotor (10).
4. Install retainer (6), washers (5), and bolts (4).
2/3
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