This document provides instructions for disassembling and assembling the final drive of a 374D L excavator. It lists the required tools and presents 33 steps for disassembly, including removing housing covers, gears, shafts, and seals. The 16 steps for assembly describe installing seals, bearings, shims, and housings, and determining the correct bearing preload. Precise procedures are outlined to ensure proper reassembly of all final drive components.
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Things to remember while upgrading the brakes of your carjennifermiller8137
Upgrading the brakes of your car? Keep these things in mind before doing so. Additionally, start using an OBD 2 GPS tracker so that you never miss a vehicle maintenance appointment. On top of this, a car GPS tracker will also let you master good driving habits that will let you increase the operational life of your car’s brakes.
What Could Cause The Headlights On Your Porsche 911 To Stop WorkingLancer Service
Discover why your Porsche 911 headlights might flicker out unexpectedly. From aging bulbs to electrical gremlins and moisture mishaps, we're delving into the reasons behind the blackout. Stay tuned to illuminate the road ahead and ensure your lights shine bright for safer journeys.
What Does the PARKTRONIC Inoperative, See Owner's Manual Message Mean for You...Autohaus Service and Sales
Learn what "PARKTRONIC Inoperative, See Owner's Manual" means for your Mercedes-Benz. This message indicates a malfunction in the parking assistance system, potentially due to sensor issues or electrical faults. Prompt attention is crucial to ensure safety and functionality. Follow steps outlined for diagnosis and repair in the owner's manual.
What Are The Immediate Steps To Take When The VW Temperature Light Starts Fla...Import Motorworks
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Welcome to ASP Cranes, your trusted partner for crane solutions in Raipur, Chhattisgarh! With years of experience and a commitment to excellence, we offer a comprehensive range of crane services tailored to meet your lifting and material handling needs.
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In this presentation, we have discussed a very important feature of BMW X5 cars… the Comfort Access. Things that can significantly limit its functionality. And things that you can try to restore the functionality of such a convenient feature of your vehicle.
Fleet management these days is next to impossible without connected vehicle solutions. Why? Well, fleet trackers and accompanying connected vehicle management solutions tend to offer quite a few hard-to-ignore benefits to fleet managers and businesses alike. Let’s check them out!
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Over the 10 years, we have gained a strong foothold in the market due to our range's high quality, competitive prices, and time-lined delivery schedules.
2. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 374D L EXCAVATOR PAS
Configuration: 374D L Excavator PAS00001-UP (MACHINE) POWERED BY C15 Engine
Disassembly and Assembly
374D Excavator Machine Systems
Media Number -KENR6406-01 Publication Date -01/02/2012 Date Updated -23/02/2012
i02388153
Final Drive - Disassemble
SMCS - 4050-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-2420 Transmission Repair Stand 1
B 138-7575 Link Bracket 3
C 138-7576 Link Bracket 2
D
132-8119 Hydraulic Wrench 1
132-8223 Hydraulic Pump and Motor Gp 1
9U-7418 (1)
Hex Bit Socket 1
E 176-6536 Forcing Bolt 2
( 1 )
Cut the tool to length (X). Length (X) is equal to 14 mm (0.55 inch). Refer to Step 27 for the correct
modification.
Start By:
A. Remove the final drive. Refer to Disassembly and Assembly, "Final Drive - Remove".
1. Thoroughly clean the outside of the final drive prior to disassembly.
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3. Illustration 1 g00865168
2. Fasten the final drive to Tooling (A). Put an alignment mark across the sections of the final
drive for assembly purposes. All parts must be reinstalled in the original locations. The
weight of the final drive is approximately 817 kg (1800 lb).
Illustration 2 g00865172
3. Remove socket head bolts (1) from the final drive cover.
Illustration 3 g01192344
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4. 4. Attach Tooling (C) and a suitable lifting device to cover (2). The weight of cover (2) is
approximately 66 kg (145 lb).
5. Remove bolts (3). Use a suitable hammer to break the seal between cover (2) and the ring
gear. Remove cover (2).
Illustration 4 g00865183
6. Remove spacer (4) and the shims from the cover.
7. Remove socket head bolts (5) and ring gear (6) from the cover.
Illustration 5 g00865487
8. Remove sun gear (7) .
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5. Illustration 6 g00865501
9. Use Tooling (B) and a suitable lifting device to remove carrier assembly (8). The weight of
carrier assembly (8) is approximately 30 kg (55 lb).
Illustration 7 g00865534
10. Remove retaining ring (9), spacer (10), and sun gear (11) .
Illustration 8 g00865551
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6. 11. Drive spring pin (13) into shaft (14). Remove shaft (14) and gear assembly (12) .
Illustration 9 g00865614
12. Remove washers (15) and bearing (16) from gear (17). Remove spring pin (13) from shaft
(14) .
13. Repeat Steps 11 and 12 for the remaining gear assemblies.
Illustration 10 g00865671
14. Use Tooling (B) and a suitable lifting device to remove carrier assembly (18). The weight of
carrier assembly (18) is approximately 68 kg (150 lb).
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7. Illustration 11 g00865717
15. Remove retaining ring (19), spacer (20), and gear assembly (21) .
Illustration 12 g00865736
16. Drive spring pin (22) into planetary shaft (24). Remove planetary shaft (24) and gear
assembly (23) .
Illustration 13 g00865753
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8. 17. Remove thrust washers (27) and bearing (26) from planetary gear (25). Remove spring pin
(22) from shaft (24) .
18. Repeat Steps 16 and 17 for the remaining gear assemblies.
Illustration 14 g01192348
19. Use Tooling (C) and a suitable lifting device to remove carrier assembly (28). The weight of
carrier assembly (28) is approximately 107 kg (235 lb).
20. Remove spacer (29) .
Illustration 15 g00865872
21. Drive spring pin (31) into shaft (32). Remove planetary shaft (32) and gear assembly (30) .
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9. Illustration 16 g00865884
22. Remove thrust washers (33) and (37), and bearings (34) and (36) from planetary gear (35).
Remove spring pin (31) from shaft (32) .
23. Repeat Steps 21 and 22 for the remaining gear assemblies.
Illustration 17 g01192382
24. Use Tooling (C) and a suitable lifting device to remove ring gear (38) from housing (39).
The weight of ring gear (38) is approximately 125 kg (275 lb).
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10. Illustration 18 g00865939
25. Remove O-ring seal (40) from the main housing.
Illustration 19 g00865955
26. Place suitable cribbing under the final drive in order to support the motor housing.
Illustration 20 g00866047
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11. Illustration 21 g00865969
Dimension (X) is equal to 14.0 mm (0.55 inch).
27. Use Tooling (D) to remove bolts (41) from gear (42) .
Illustration 22 g00866066
28. Install Tooling (E) in the gear, as shown. Tighten Tooling (E) evenly in order to loosen the
gear. Remove the gear from the motor housing.
Illustration 23 g00866072
29. Remove shims (43) from the motor housing.
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12. Illustration 24 g00866085
30. Attach Tooling (C) and a suitable lifting device to main housing (45). The weight of main
housing (45) is approximately 191 kg (420 lb).
31. Remove bolts (44) .
32. Use the suitable lifting device to separate main housing (45) from motor housing (39) .
Note: Motor housing (39) will rest on the suitable cribbing.
Illustration 25 g00866095
33. Remove bearing cone (46) from the main housing.
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13. Illustration 26 g00866100
34. Remove Duo-Cone seal (47), and bearing cups (48) and (49) from the main housing.
Illustration 27 g00866156
35. Remove pins (50), if necessary.
36. Remove bearing cone (51) .
37. Remove Duo-Cone seal (52) from the motor housing.
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Thu Nov 5 11:54:59 UTC+0800 2020
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14. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 374D L EXCAVATOR PAS
Configuration: 374D L Excavator PAS00001-UP (MACHINE) POWERED BY C15 Engine
Disassembly and Assembly
374D Excavator Machine Systems
Media Number -KENR6406-01 Publication Date -01/02/2012 Date Updated -23/02/2012
i07188314
Final Drive - Assemble
SMCS - 4050-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-2420 Transmission Repair Stand 1
B 439-3941 Link Bracket 3
C 439-3940 Link Bracket 2
D
385-7874 Hydraulic Torque Wrench 1
385-8479 Hydraulic Pump and Motor Gp 1
9U-7418 Hex Bit Socket 1
F 6V-3175 Double Acting Cylinder 1
350-7768 Electric Hydraulic Pump Gp 1
150-1784 Crossblock 1
1U-9889 Crossblock 1
150-1961 Washer 2
150-1786 Plate 2
4C-9634 Puller Stud 1
9U-6832 Nut 1
2K-7468 Locknut 1
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15. 4K-0684 Locknut 2
6V-2078 Stud 2
5P-4807 Cap 2
H 140-7642 Duo-Cone Seal Installer As 1
J - Loctite 1
K 9S-3263 Thread Lock Compound 1
L - Loctite 1
1. Make sure that all parts of the final drive are thoroughly clean and free of dirt and debris
prior to assembly.
Note: Check the condition of all the O-ring seals that are used in the final drive. If any of
the seals are worn or damaged, use new parts for replacement.
2. Reassemble the final drive on wood blocks and Tooling (A).
Illustration 1 g00875656
3. Apply Tooling (J) to the surfaces that contact the bearing cones. Install the bearing cone
with a press. Raise the temperature of bearing cone (51) and install the bearing cone.
4. Apply Tooling (J) to the surfaces that contact pins (50) and install contact pins (50).
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16. Illustration 2 g00875674
5. Apply Tooling (J) to the surfaces that contact the bearing cups. Install bearing cups (48) and
(49).
Illustration 3 g01192402
6. Attach Tooling (C) and a suitable lifting device to main housing (45). Install main housing
(45) on motor housing (39). The weight of main housing (45) is approximately 191 kg
(420 lb).
Illustration 4 g00875859
7. Install bearing cone (46) and the bearing cone.
8. Use the following procedure to determine the bearing preload and the correct number of
shims.
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17. Illustration 5 g00603328
a. Use a depth micrometer to measure the step length of the coupling gear (42). Take
measurements at several different locations around the gear. Compute the average of
the measured dimensions and record the number. Call this Dimension (X).
Illustration 6 g00876170
Illustration 7 g00876133
b. Use Tooling (F) to apply a load of 10700 kPa (1550 psi) to seat the bearings. A
pressure of 10700 kPa (1550 psi) is the equivalent of 10000 kg (22050 lb) on a
suitable press. Rotate the housing to seat the bearing. Reduce the load to 4825 kPa
(700 psi).
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18. c. Rotate Tooling (F) by 90° and repeat Step 8.b.
d. Maintain the load on the bearings. Use a depth micrometer and measure the distance
between the top face of motor housing and the bearing cone. Take this measurement
in several locations around the bearing. Compute the average of the measured
dimensions and record the number. Call this Dimension (Y).
e. Determine the correct thickness of the shim pack that will be installed between the
bearing cone and the coupling gear. The shim pack thickness is equal to Dimension
(X) minus Dimension (Y). Tolerance for the shim pack is 0.10 mm (0.003 inch).
Note: If two shims are required, install the thinner shim next to the coupling gear
when the coupling gear is installed.
9. Use Tooling (C) and a suitable lifting device to remove the main housing from the motor
housing. The weight of the main housing is approximately 191 kg (420 lb).
Note: Refer to Disassembly and Assembly, "Duo-Cone Conventional Seals - Install"
.
Note: The rubber seals and all surfaces that contact the seals must be clean and dry. After
installation of the seals, apply clean oil on the contact surfaces of the metal seals.
Illustration 8 g01192416
10. Use Tooling (H) to install Duo-Cone seal (47) in the main housing.
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19. Illustration 9 g01192418
11. Use Tooling (H) to install Duo-Cone seal (52) in the motor housing.
Note: Make sure that the Duo-Cone seals are not scratched or damaged during the assembly
of the main housing or during the assembly of the motor housing. After installation of the
main housing on the motor housing, there will be a small gap between the components. The
gap is caused by the Duo-Cone seals. The gap will be eliminated during installation of the
gear.
Illustration 10 g01192402
12. Use Tooling (C) and a suitable lifting device to position main housing (45) on motor
housing (39). Make sure that the Duo-Cone seals are not scratched or damaged during
installation. The weight of the main housing is approximately 191 kg (420 lb).
Illustration 11 g00876801
13. Install bearing cone (46).
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20. Illustration 12 g00866072
Illustration 13 g03671062
Typical Example
14. Place shims (43) in the correct position on the motor housing. If two shims were required,
put the thinner shim in contact with coupling gear (42). Make sure that all the holes in the
components are in alignment with each other. Put coupling gear (42) in the original position
on the motor housing.
15. Apply Tooling (K) on the threads of bolts (41). Install the bolts to secure coupling gear (42)
in place. Tighten bolts (41) evenly in a crisscross pattern to a torque of 1800 ± 200 N·m
(1327 ± 148 lb ft).
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21. Illustration 14 g03671063
16. Install O-ring seal (40) in the main housing.
Illustration 15 g00866085
17. Use Tooling (C) and a suitable lifting device to position housings (39) and (45) on Tooling
(A). The combined weight of housings (39) and (45) is approximately 363 kg (800 lb).
18. Install bolts (44) to secure the housings to Tooling (A).
19. Remove the suitable cribbing.
Illustration 16 g03671065
20. Thoroughly clean the mating surface of main housing (39) that contacts ring gear (38).
Apply a bead of Tooling (L) on the mating surface of ring gear (38). Use Tooling (C) and a
suitable lifting device to place ring gear (38) in position on main housing (39). Make sure
that the alignment mark on main housing (39) and ring gear (38) line up with each other. It
may be necessary to use a suitable hammer to seat ring gear (38) on main housing (39).
21. Assemble the carrier assembly, as follows:
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22. Illustration 17 g00865884
Illustration 18 g01192432
a. Apply clean oil on bearings (34) and (36). Install bearings (34) and (36) in planetary
gear (35).
b. Install thrust washers (33) and (37) on each side of planetary gear (35).
c. Install planetary gear (35) and thrust washers (33) in carrier assembly (28).
d. Install planetary shaft (32) in carrier assembly (28) and through planetary gear
assembly (30). Make sure that the spring pin hole in planetary shaft (32) is in
alignment with the spring pin hole in carrier assembly (28).
e. Install spring pin (31) in carrier assembly (28) and into planetary shaft (32). Make
sure that the spring pin hole in planetary shaft (32) is in alignment with the spring pin
hole in carrier assembly (28).
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23. Illustration 19 g00513451
f. Orient the split in spring pin (31) horizontally to the carrier. Align the split in the
spring pin to the left or to the right. Make a stake mark on each side of the spring pin
hole in the carrier. This will prevent the spring pin from falling out of the spring pin
hole. Each stake mark should be approximately 1.5 to 3.00 mm
(0.06 to 0.118 inch)from the outside diameter of the spring pin hole.
g. Repeat Steps 21.a through 21.f to install the other three planetary gears in carrier
assembly (28).
Illustration 20 g01192348
22. Use Tooling (C) and a suitable lifting device to install carrier assembly (28) in the ring gear.
The weight of carrier assembly (28) is approximately 125 kg (275 lb).
23. Install spacer (29).
24. Assemble the carrier assembly, as follows:
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24. Thank you very much for
your reading. Please Click
Here. Then Get COMPLETE
MANUAL. NO WAITING
NOTE:
If there is no response to
click on the link above,
please download the PDF
document first and then
click on it.
25. Illustration 21 g00865753
Illustration 22 g00865736
a. Apply clean oil on bearing (26). Install bearing (26) in planetary gear (25).
b. Install thrust washers (27) on each side of planetary gear (25).
c. Install thrust washers (27) and planetary gear (25) in the carrier assembly.
d. Install planetary shaft (24) in the carrier assembly and through planetary gear
assembly (23). Make sure that the spring pin hole in planetary shaft (24) is in
alignment with the spring pin hole in the carrier.
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26. Illustration 23 g00513451
e. Orient the split in the spring pin (22) horizontally to the carrier. Align the split in the
spring pin to the left or to the right. Make a stake mark on each side of the spring pin
hole in the carrier. This will prevent the spring pin from falling out of the spring pin
hole. Each stake mark should be approximately 1.5 to 3.00 mm (0.06 to 0.118 inch)
from the outside diameter of the spring pin hole.
f. Repeat Steps 24.a through 24.e to install the other two planetary gears in the carrier
assembly.
Illustration 24 g00865717
25. Install gear assembly (21), spacer (20), and retaining ring (19).
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27. Illustration 25 g00865671
26. Use Tooling (B) and a suitable lifting device to install carrier assembly (18). The weight of
carrier assembly (18) is approximately 68 kg (150 lb).
Illustration 26 g00865614
27. Apply clean oil on bearing (16). Install washers (15) and bearing (16) in gear (17).
Illustration 27 g00865551
28. Install gear assembly (12) and shaft (14). Drive spring pin (13) into shaft (14).
29. Repeat Steps 27 and 28 for the remaining gear assemblies.
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