Caterpillar Cat 428D BACKHOE LOADER (Prefix BNB) Service Repair Manual Instant Download 8

Service

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Product: BACKHOE LOADER

Model: 428D BACKHOE LOADER BNB

Configuration: 428D Backhoe Loader BNB00001-00699 (MACHINE) POWERED BY 3054 Engine

Disassembly and Assembly

416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Power

Transmission (Power Shift) - Disassemble

SMCS - 3030-015-PM; 3066-015

Disassembly Procedure Table 1 Required Tools

CE Compliant

Start By:

A. Remove the transmission. Refer to Disassembly and Assembly, "Transmission (Powershift) - 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, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.

Dispose of all fluids according to local regulations and mandates.

Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.

Note: The transmission will be disassembled in major components. The major components will then be disassembled.

1. Use a suitable lifting device in order to install transmission (1) on tooling (A) . The weight of transmission (1) is 172 kg (379 lb).

Illustration 1

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Illustration 2

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2. Remove two valve groups (2) .

Illustration 3

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3. Remove nut (3) , washer (4) , and coil assembly (5) . Remove seal kit (6) from cartridge (7) .

Illustration 4

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4. Remove magnetic sensor (8) .

Illustration 5

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Illustration 6

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5. Remove tube assembly (9) .

Illustration 7

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6. Remove valve group (10) .

Illustration 8

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7. Remove O-ring (11) and O-ring (12) .

Illustration 9

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8. Remove valve group (13) .

Illustration 10 g00730327

9. Remove two O-rings (14) and O-ring (15) .

Illustration 11 g00730328

10. Remove two bolts (16) and plate (17) .

Illustration 12 g00730329

11. Remove O-ring (18) .

Illustration 13

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12. Remove screen filter (19) .

Illustration 14

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13. Remove oil filter (20) .

Illustration 15

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14. Remove two bolts (21) and elbow assembly (22) .

Illustration 16 g00730334

15. Remove two O-rings (23) .

Illustration 17 g00730336

16. Remove valve group (24) .

Illustration 18

17. Remove ball (25) , spring (26) , and O-ring (27) .

Illustration 19 g00730338

18. Remove pump drive shaft (28) from the transmission.

Illustration 20

19. Remove bolt (29) , washer (30) , and yoke assembly (31) from the output shaft.

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Illustration 21 g00730342

20. Remove gasket (32) from yoke (33) .

Illustration 22 g00730343

21. Remove bolt (34) and washer (35) .

Illustration 23 g00730344

22. Remove O-ring (36) and yoke (37) from the output shaft.

Illustration 24

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23. Remove four bolts (38) , washers (39) , and pump group (40) .

Illustration 25

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24. Remove seal (41) .

Illustration 26 g00730349

25. Remove lip seal (42) from pump group (40) .

Illustration 27 g00730350

26. Use tooling (I) and a suitable lifting device in order to support the transmission case. Remove eighteen bolts (43) .

Illustration 28 g00730351

27. Use a pry bar in the slots of the transmission case in order to break the seal. Carefully remove case assembly (44) . The weight of case assembly (44) is 26.9 kg (59 lb).

Illustration 29

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28. Remove lip seal (45) from case assembly (44) .

Illustration 30

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29. Remove tube assembly (46) and (47) from case assembly (44) .

Illustration 31

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30. Remove bearing cups (48) , (49) , and (50) from case assembly (44) .

Note: Record the measurement of shims (51) to aid in installation.

Illustration 32 g00730356

31. Remove shims (51) from case (44) .

Illustration 33 g00730357

32. Remove output shaft (52) .

Illustration 34 g01280623

33. Use Tooling (B) , washer (35) , and bolt (34) in order to remove rear output shaft (53) , shaft (54) , and input shaft (55) . The combined weight of rear output shaft (53) , shaft (54) , and input shaft (55) is 61.3 kg (135 lb).

Illustration 35 g00730359

34. Remove reverse shaft (56) from the case assembly.

Illustration 36 g00730360

35. Use tooling (C) in order to remove bearing cups (57) .

Output Shaft (Front)

Illustration 37

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36. Remove lip seal (58) from the case assembly.

Illustration 38

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37. Remove tube assembly (59) .

Illustration 39 g00730365

1. Remove ring (60) from front output shaft (52) .

Illustration 40 g00730366

2. Use tooling (D) in order to remove bearing cone (61) .

Illustration 41

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Illustration 42 g00730369

3. Use tooling (E) in order to remove spacer (62) , bearing cone (63) , washer (64) , needle thrust bearing (65) , and gear (66) .

Illustration 43

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4. Remove caged roller bearing (67) , spacer (68) , caged roller bearing (69) , needle thrust bearing (70) , and washer (71) .

Illustration 44

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5. Remove retaining ring (72) and end plate (73) .

6. Remove eight friction discs (74) and eight plates (75) .

7. Use tooling (F) in order to compress the spring assembly. Remove retaining ring (76) .

Illustration 45

Illustration 46

Illustration 47 g00730376

8. Remove spring assembly (77) .

Output Shaft (Rear)

Illustration 48

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9. Use shop air in order to remove piston assembly (79) , as shown.

Illustration 49

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10. Remove ring (78) and the O-ring from piston (79) .

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50

1. Remove rings (80) and (81) .

51

Illustration 52

2. Use tooling (G) in order to remove bearing cone (82) , washer (83) , needle thrust bearing (84) , caged roller bearing (85) , and gear (86) .

Illustration

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Illustration

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