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7K458 ACTUATING CYLINDER GROUP--3.50" Bore x 32.60" Stroke Effective with Serial No. 23J733 Part of Dipper shown on Page 9 D4




HYDRAULIC SYSTEM

CYLINDER GP
 

#UEG0042S0020
 

7K-0458: ACTUATING CYLINDER GROUP

7K458 ACTUATING CYLINDER GROUP--3.50" Bore x 32.60" Stroke
Effective with Serial No. 23J733
Part of Dipper shown on Page 9
c104957 UEG0042S
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Parts for your D4 BACKHOE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6K-3547 [2] PISTON  
2. 6K-3545 [1] ROD ASSEM.  
3. 3B-8488 [1] FITTING  
4. 6K-3540 [2] BEARING  
    (Part of 6K3545 Rod Assem.)
5. 1K-6979 [1] SET SCREW  
6. 1B-4427 [1] NUT  
7. 6K-3544 [1] NUT  
8. 6K-3546 [1] CARTRIDGE ASSEM.  
9. 6K-3543 [1] WASHER (.030" Thick)  
  6K-3542 [1] WASHER  
10. 4D-1736 [1] RING  
11. 2K-0512 [1] NUT  
12. 7K-0459 [1] BARREL ASSEM.  
13. 3B-8489 [1] FITTING  
    (Part of 7K459 Barrel Assem.)
  6K-3579 H [1] KIT  
    (Consists of Ring, Packings and Seals for repair of Actuating Cylinder)
  H   NOT PART OF 7K458 CYLINDER GRO
 

#UEG0042S0021
 

6K-3551: CROWD AND LIFT CYLINDER GROUP

6K3551 CROWD AND LIFT CYLINDER GROUP--3.90" Bore x 36.50" Stroke--2 Required
Serial No. 23J1 to 23J731 inclusive
Part of Boom and Dipper shown on Pages 8 and 9
c99377 UEG0042S
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Parts for your D4 BACKHOE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6K-3539 [1] BARREL ASSEM.  
2. 6K-3529 [1] BEARING  
3. 3B-8489 [1] FITTING  
    (Parts of 6K3539 Barrel Assem.)
4. [1] ROD ASSEM.  
5. 6K-3540 [2] BEARING  
6. 3B-8488 [1] FITTING  
    (Parts of 6K3538 Rod Assem.)
7. 6K-3537 [1] CARTRIDGE ASSEM.  
8. 6K-3534 [1] NUT  
9. 1K-6979 [1] SET SCREW  
10. 1B-4427 [1] NUT  
11. 6K-3532 [1] WASHER  
12. 6K-3530 [1] WASHER  
13. 6K-3531 [1] RING  
14. 6K-3536 [2] PISTON  
  6K-3578 [1] KIT (Crowd & Lift Cylinder)  
    (Consists of Packing Assem., Packing, Ring and Seals)
 

#UEG0042S0022
 

7K-0437: CROWD AND LIFT CYLINDER GROUP

7K437 CROWD AND LIFT CYLINDER GROUP--4" Bore x 36.50" Stroke--2 Required
Effective with Serial No. 23J732
Part of Boom and Dipper shown on Pages 8 and 9
c104956 UEG0042S
  For full view, you need register

Parts for your D4 BACKHOE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7K-0436 [1] BARREL ASSEM.  
2. 6K-3529 [1] BEARING  
3. 3B-8489 [1] FITTING  
    (Parts of 7K436 Barrel Assem.)
4. 6K-3538 [1] ROD ASSEM.  
5. 6K-3540 [2] BEARING  
6. 3B-8488 [1] FITTING  
    (Parts of 6K3538 Rod Assem.)
7. 6K-3537 [1] CARTRIDGE ASSEM.  
8. 6K-3534 [1] NUT  
9. 1K-6979 [1] SET SCREW  
10. 1B-4427 [1] NUT  
11. 6K-3532 [1] WASHER  
12. 6K-3530 [1] WASHER  
13. 6K-3531 [1] RING  
14. 6K-3536 [2] PISTON  
15. 2K-0512 [1] NUT  
  6K-3578 [1] KIT (Crowd & Lift Cylinder)  
    (Consists of Packing Assem., Packing, Ring and Seals)
 

#UEG0042S0023
 

6K-3652: BUCKET ASSEMBLY

6K3652 BUCKET ASSEMBLY--24" Wide
Part of Dipper shown on Page 9
c105282 UEG0042S
  For full view, you need register

Parts for your D4 BACKHOE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. [1] BUCKET ASSEM.  
2. 6K-3667 [4] POINT  
3. 6K-3668 [4] PIN  
4. 6K-3669 [4] LOCK  
5. 6K-3670 [1] EDGE ASSEM.  
6. 6K-3666 [4] ADAPTER  
    (Part of 6K3670 Edge Assem.)
 

#UEG0042S0024
 

6K-8522: BUCKET ASSEMBLY

6K8522 BUCKET ASSEMBLY--12" Wide
AN ATTACHMENT
c122289 UEG0042S
  For full view, you need register

Parts for your D4 BACKHOE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. [1] BUCKET ASSEM.  
2. 6K-3667 [2] POINT  
3. 6K-8839 [1] EDGE ASSEM.  
4. 6K-3666 [2] BASE  
    (Part of 6K8839 Edge Assem.)
5. 6K-3668 [2] PIN  
  6K-3669 [2] LOCK  
 

#UEG0042S0025
 

6K-8523: BUCKET ASSEMBLY

6K8523 BUCKET ASSEMBLY--18" Wide
AN ATTACHMENT
c122290 UEG0042S
  For full view, you need register

Parts for your D4 BACKHOE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. [1] BUCKET ASSEM.  
2. 6K-3668 [3] PIN  
  6K-3669 [3] LOCK  
3. 6K-8838 [1] EDGE ASSEM.  
4. 6K-3666 [3] BASE  
    (Part of 6K8838 Edge Assem.)
5. 6K-3667 [3] POINT  
 

#UEG0042S0026
 

6K-8524: BUCKET ASSEMBLY

6K8524 BUCKET ASSEMBLY--30" Wide
AN ATTACHMENT
c122291 UEG0042S
  For full view, you need register

Parts for your D4 BACKHOE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. [1] BUCKET ASSEM.  
2. 6K-3668 [5] PIN  
  6K-3669 [5] LOCK  
3. 6K-8840 [1] EDGE ASSEM.  
4. 6K-3666 [5] BASE  
    (Part of 6K8840 Edge Assem.)
5. 6K-3667 [5] POINT  
 

#UEG0042S0027
 

6K-3583: SWING CYLINDER GROUP

6K3583 SWING CYLINDER GROUP--3.90" Bore x 12.90" Stroke
Part of D4, 922 and 944 Backhoe shown on Page 6
c121931 UEG0042S
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Parts for your D4 BACKHOE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2S-0680 [1] NUT  
2. 6K-3536 [1] PISTON  
3. 6K-3548 [1] PISTON  
4. 6K-3581 [1] BARREL ASSEM.  
5. 3B-8489 [1] FITTING  
    (Part of 6K3581 Barrel Assem.)
6. 1B-4427 [1] NUT  
7. 1K-6979 [1] SET SCREW  
8. 6K-3600 [1] CARTRIDGE ASSEM.  
9. [1] BEARING  
10. [1] SEAL  
    (Parts of 6K3600 Cartridge Assem.)
11. 6K-3582 [1] ROD ASSEM.  
12. 3B-8489 [1] FITTING  
13. 6K-9822 [2] BEARING  
14. 6K-6665 [1] SPACER  
    (Parts of 6K3582 Rod Assem.)
15. 6K-3534 [1] NUT  
    The following repair kit is available:
  6K-3650 [1] KIT (Swing Cylinder)  
    (Consists of Packing Assembly, Seals and Rings)
 

#UEG0042S0028
 

STABILIZER

STABILIZER
Serial No. 23J1 to 23J726 inclusive
Part of D4, 922 and 944 Backhoe shown on Page 6
6K3561 Cylinder Group parts are shown on Page 19
c122218 UEG0042S
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Parts for your D4 BACKHOE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6K-3631 [10] RING  
2. 6K-3589 [2] PIN  
3. 6K-3561 Y [2] STABILIZER CYLINDER GROUP  
    (See Separate Illustration)
4. 6K-3588 [2] PIN  
5. 6K-3664 [2] CHAIN ASSEM.  
6. 6K-3580 [2] FOOTPLATE ASSEM.  
7. 3B-8489 [13] FITTING  
8. 6K-3587 [2] PIN  
9. 6K-3568 [2] STABILIZER ASSEM.  
10. 6K-3586 [2] PIN  
11. 3B-4617 [2] COTTER PIN  
12. 2J-3758 [2] PIN  
  Y   SEPARATE ILLUSTRATION
 

#UEG0042S0029
 

STABILIZER

STABILIZER
Effective with Serial No. 23J727
Part of D4, 922 and 944 Backhoe shown on Page 6
7K850 Cylinder Group parts are shown on Page 20
c104954 UEG0042S
  For full view, you need register

Parts for your D4 BACKHOE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6K-3631 [10] RING  
2. 6K-3589 [2] PIN  
3. 7K-0850 YC [2] STABILIZER CYLINDER GROUP  
    (See Separate Illustration)
4. 6K-3588 [2] PIN  
5. 6K-3664 [2] CHAIN ASSEM.  
6. 6K-3580 [2] FOOTPLATE ASSEM.  
7. 3B-8489 C [6] FITTING  
8. 7K-0851 C [2] PIN  
9. 6K-3568 [2] STABILIZER ASSEM.  
10. 6K-3586 [2] PIN  
11. 3B-4617 [2] COTTER PIN  
12. 2J-3758 [2] PIN  
  C   INDICATES CHANGE FROM PREVIOUS
  Y   SEPARATE ILLUSTRATION
 

Information:

Caterpillar Parts SIS Catalog D4 :

Truck sale:

Call 
2000 CAT D400

CGT SPA
Roma, Italy
USD $34,259 
1991 CAT D400

Waller Construction Equipment Ltd
USD $13,950 
1993 CAT D400

United Exports
Old Forge, Pennsylvania
 
 
1994 CAT D400

United Exports
Old Forge, Pennsylvania
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