2. Shutdown SIS
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Product: BACKHOE LOADER
Model: 424D BACKHOE LOADER BKR
Configuration: 424D Backhoe Loader BKR00001-00528 (MACHINE) POWERED BY 3054 Engine
Disassembly and Assembly
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Power
Train
Media Number -RENR3578-12 Publication Date -01/04/2010 Date Updated -13/04/2010
i01381641
Transmission (Direct Drive) - Assemble
SMCS - 3030-016-DD; 3066-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 137-8102 Spring Compressor 1
B 1P-1859 Snap Ring Pliers 1
C 4C-3652 Spring Compressor 1
D 6V-2157 Link Bracket 1
E 8T-5096 Indicator 1
F 1U-5750 Engine Stand 1
Note: The transmission will be assembled in major components. The major components will then
be assembled.
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.
Note: Apply a light film of clean transmission oil to all components before assembly.
Transmission case
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3. Illustration 1 g00729262
Note: Install the shims behind each bearing cup that was recorded on the disassembly
procedure.
1. Install bearing cups (60), (61), (62), (63), and (64) .
(Direct Drive) Input Shaft
Illustration 2 g00731364
1. Install the needle thrust bearings on the shafts. The open end of cups (1) must point away
from the bearings or gears that are contacted.
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4. Illustration 3 g00729745
2. Install the seals on piston (56) .
Illustration 4 g00729752
3. Install piston (56). Install the retainer and spring (55). Use tooling (A) and a suitable press
in order to compress spring (55). Use tooling (B) in order to install snap ring (54) .
Illustration 5 g00729210
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5. 4. Install clutch pack (53) and retainer (52) .
5. Repeat Steps 2 through 4 for the opposite end of the input shaft.
Illustration 6 g00729208
6. Install gear (51), needle bearing (50), and spacer (49). Use tooling (B) in order to install
snap ring (48) .
Illustration 7 g00729771
7. Heat bearing cone (57) to 135 °C (275 °F). Install bearing cone (57) .
8. Install the input shaft.
(Direct Drive) Reverse Shaft
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6. Illustration 8 g00729785
1. Heat bearing cones (45) and (46) to 135 °C (275 °F). Install bearing cones (45) and (46) .
2. Install the reverse shaft.
(Direct Drive) Shaft
Illustration 9 g00729792
1. Heat bearing cones (45) and (46) to 135 °C (275 °F). Install bearing cones (45) and (46) .
2. Install the shaft.
(Direct Drive) Output Shaft (Rear)
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7. Illustration 10 g00729806
1. Install gear (42) .
Illustration 11 g00729200
2. Install housing (41) and gear (40). Use tooling (B) in order to install snap ring (39) .
Illustration 12 g00729810
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8. 3. Install synchronizer (38). Install gear (37). Heat bearing cone (36) to 135 °C (275 °F).
Install bearing cone (36) .
Illustration 13 g00729198
4. Install synchronizer (35), spacer (34), and bearings (33) .
Illustration 14 g00729812
5. Install gear (31) and (32). Heat bearing cone (30) to 135 °C (275 °F). Install bearing cone
(30) .
6. Install the output shaft (rear) in the transmission.
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9. Illustration 15 g00729196
Illustration 16 g00729064
7. Install two gearshift rods (23) on shift forks (29). Install the gearshift rods in the
transmission. Install three balls (28), two springs (27), and O-ring (26). Install plug (25) .
Illustration 17 g00729062
8. Install screws (24) on each of the gearshift rods (23) .
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11. Illustration 20 g00730110
2. Install piston (22), spring (19), and retainer (21) .
3. Use tooling (C) and a suitable press in order to compress spring (19). Use tooling (B) in
order to install snap ring (20) .
Illustration 21 g00728948
4. Install clutch pack (18) and retainer (17) .
Illustration 22 g00728945
5. Install thrust washer (16), needle bearing (15), spacer (14), and two roller bearings (13) .
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12. Illustration 23 g00729892
6. Heat bearing cone (11) to 135 °C (275 °F). Install bearing cone (11) .
Illustration 24 g00729903
7. Heat bearing cone (10) to 135 °C (275 °F). Install bearing cone (10) .
Illustration 25 g00728940
8. Install front output shaft (9) .
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13. Final Assembly
Illustration 26 g00730114
Note: Clean the mating surfaces of case (7). Apply a continuous bead of 1U-8846 Sealant to
the mating surface of the case.
1. Attach tooling (D) to case (7). Attach a suitable lifting device to tooling (D). Use fourteen
bolts (8) in order to install case (7). The weight of case (7) is 42 kg (94 lb).
Illustration 27 g00730079
2. Install a bolt in the output shaft. The output shaft must be fully seated. Install tooling (E), as
shown. Zero tooling (E). Pry up on the bolt and record the reading on tooling (E). The
reading must be 0.03 mm (0.0012 inch) to 0.08 mm (0.0031 inch). Add or remove shims in
Step 1 in the Case Assembly Procedure in order to obtain the correct reading.
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14. Illustration 28 g00730086
3. Repeat Step 1 for the input shaft and the output shaft (front). Use the same tolerance for all
of the shafts. Remove the expansion plug in order to check the input shaft. Use a
screwdriver to pry up on the input shaft. Install a new 1H-9721 Expansion Plug .
Illustration 29 g00728906
4. Install yoke (4), washer (5), and bolt (6) .
Illustration 30 g00728902
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15. 5. Install plug (3) .
Illustration 31 g00728895
6. Install Implement pump drive shaft (2) in transmission (1) .
Illustration 32 g00730116
7. Remove transmission (1) from tooling (F) .
End By: Install the transmission. Refer to Disassembly and Assembly, "Transmission (Direct
Drive) - Install".
Copyright 1993 - 2019 Caterpillar Inc.
All Rights Reserved.
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17. Shutdown SIS
Previous Screen
Product: BACKHOE LOADER
Model: 424D BACKHOE LOADER BKR
Configuration: 424D Backhoe Loader BKR00001-00528 (MACHINE) POWERED BY 3054 Engine
Disassembly and Assembly
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Power
Train
Media Number -RENR3578-12 Publication Date -01/04/2010 Date Updated -13/04/2010
i01459029
Transmission (Direct Drive) - Install
SMCS - 3030-012-DD
Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A
8S-7640 Stand 2
8S-7611 Tube 2
8S-7615 Pin 2
B 1U-9760 Jack Stand 2
C 1U-7505 Transmisson Jack 1
D 1U-7558 Mounting Brackets 2
E FT-2535 Engine Support Bar Assembly 1
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18. Illustration 1 g00762601
1. Attach tooling (D) to tooling (C) and transmission (10) in order to maintain a good balance.
Illustration 2 g00762359
2. Use tooling (C) in order to position transmission (10). The weight of transmission (10) is
185 kg (408 lb).
Illustration 3 g00762479
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19. 3. Install fourteen bolts (11) .
Illustration 4 g00762562
4. Slide rod assembly (9) on the transmission lever and tighten bolt (8) .
Illustration 5 g00762561
5. Connect three electrical connectors (7) .
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