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515-4591 CYLINDER GP-COUPLER 50-MM (2-IN) BORE X 163-MM (6.4-IN) STROKE PART OF 515-7791 LINES GP-COUPLER AN ATTACHMENT 257D


HYDRAULIC SYSTEM
CYLINDER GP

HYDRAULIC SYSTEM
CYLINDER GP

SKID STEER LOADER 257D SKID STEER LOADER D5T
 257D Multi Terrain Loader D5T00001-UP (MACHINE) POWERED BY C3.3B Engine SEBP5970 257D D5T   (2018)

HYDRAULIC SYSTEM

CYLINDER GP
CYLINDER GP-BUCKET
278-1969 CYLINDER GP-BUCKET
CYLINDER GP-COUPLER
515-4591 CYLINDER GP-COUPLER
CYLINDER GP-HYDRAULIC
375-0713 CYLINDER GP-HYDRAULIC
CYLINDER GP-LIFT
380-5668 CYLINDER GP-LIFT
CYLINDER GP-TILT
378-7963 CYLINDER GP-TILT
CYLINDER GP-TILT
378-7964 CYLINDER GP-TILT
KIT-QUICK COUPLER CONVERSION
527-3155 KIT-QUICK COUPLER CONVERSION
MOUNTING GP-CYLINDER
154-5011 MOUNTING GP-CYLINDER
CONTROL GP-WORK TOOL
345-5099 CONTROL GP-WORK TOOL
 

#SEBP59700340
 

515-4591: CYLINDER GP-COUPLER

515-4591 CYLINDER GP-COUPLER
50-MM (2-IN) BORE X 163-MM (6.4-IN) STROKE
PART OF 515-7791 LINES GP-COUPLER
AN ATTACHMENT
i06891891 SEBP5970
5154591 CYLINDER GP-COUPLER Parts scheme
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Parts for your 257D SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6V-8397 [2] SEAL-O-RING  
   
    AVAILABLE REPLACEMENT PART(S):
  518-7949 [1] KIT-SEAL  
    (INCLUDES PISTON SEAL,O-RING SEAL,U-CUP SEAL & LIP TYPE SEAL)
 

#SEBP59700341
 

255-0943: CYLINDER GP-GRAPPLE

255-0943 CYLINDER GP-GRAPPLE -UTILITY
S/N EZW1-UP
40-MM (1.6-IN) BORE X 200-MM (7.9-IN) STROKE
PART OF 285-6116 GRAPPLE & CYLINDER GP-UTILITY
AN ATTACHMENT
i02888528 SEBP5970
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Parts for your 257D SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
 

#SEBP59700342
 

278-1975: CYLINDER GP-GRAPPLE

278-1975 CYLINDER GP-GRAPPLE -INDUSTRIAL
S/N EZW1-UP
60-MM (2.4-IN) BORE X 200-MM (7.9-IN) STROKE
PART OF 157-7223, 157-7224, 157-7225, 217-6229 BUCKET AR-GRAPPLE, 279-5350, 279-5360 FORK AR-GRAPPLE
AN ATTACHMENT
i02556266 SEBP5970
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Parts for your 257D SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
 

#SEBP59700343
 

481-7387: CYLINDER GP-GRAPPLE

481-7387 CYLINDER GP-GRAPPLE
S/N EZW1-UP
PART OF 477-9896, 489-0075 HANDLER AR-BALE
AN ATTACHMENT
i06275543 SEBP5970
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Parts for your 257D SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
 

#SEBP59700344
 

225-9521: CYLINDER GP-HYDRAULIC

225-9521 CYLINDER GP-HYDRAULIC -ANGLE BLADE
S/N EZW1-UP
63-MM (2.5-IN) BORE X 300-MM (11.8-IN) STROKE
PART OF 230-5406 CYLINDER & MTG GP-ANGLE BLADE
AN ATTACHMENT
i01829254 SEBP5970
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Parts for your 257D SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
 

#SEBP59700345
 

274-9930: CYLINDER GP-HYDRAULIC

274-9930 CYLINDER GP-HYDRAULIC -ANGLE BLADE
S/N EZW1-UP
70-MM (2.8-IN) BORE X 314-MM (12.4-IN) STROKE
PART OF 231-5274 CYLINDER & MTG GP-ANGLE BLADE
AN ATTACHMENT
i02477385 SEBP5970
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Parts for your 257D SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
 

#SEBP59700346
 

274-9931: CYLINDER GP-HYDRAULIC

274-9931 CYLINDER GP-HYDRAULIC -TILT
S/N EZW1-UP
70-MM (2.8-IN) BORE X 120-MM (4.7-IN) STROKE
PART OF 231-5274 CYLINDER & MTG GP-ANGLE BLADE
AN ATTACHMENT
i02476821 SEBP5970
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Parts for your 257D SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
 

#SEBP59700347
 

375-0713: CYLINDER GP-HYDRAULIC

375-0713 CYLINDER GP-HYDRAULIC
PART OF 388-8182 CHASSIS AR
i05163079 SEBP5970
3750713 CYLINDER GP-HYDRAULIC Parts scheme
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Parts for your 257D SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 378-7963 Y [1] CYLINDER GP-TILT (RH)  
2. 378-7964 Y [1] CYLINDER GP-TILT (LH)  
3. 380-5668 Y [2] CYLINDER GP-LIFT  
  Y   SEPARATE ILLUSTRATION
 

#SEBP59700348
 

380-5668: CYLINDER GP-LIFT

380-5668 CYLINDER GP-LIFT
65-MM (2.6-IN) BORE X 802-MM (31.6-IN) STROKE
PART OF 375-0713 CYLINDER GP-HYDRAULIC
i05163094 SEBP5970
3805668 CYLINDER GP-LIFT Parts scheme
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Parts for your 257D SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6V-8398 [2] SEAL-O-RING  
2. 141-0713 J [1] SEAL-LIP TYPE  
3. 161-7144 J [1] SEAL-PISTON  
4. 162-0177 [2] PLUG AS  
    (EACH INCLUDES)
  3J-1907 [1] SEAL-O-RING  
  9S-8004 [1] PLUG (9/16-18-THD)  
5. 9X-6611 M [1] SETSCREW-SOCKET (M10X1.5X16-MM)  
6. 8C-3081 J [1] SEAL-O-RING  
7. 397-0747 [1] ROD AS  
8. 4J-0527 J [1] SEAL-O-RING  
9. 144-9491 J [1] RING-WEAR  
10. 296-5141 [1] RING-WEAR  
11. 298-6947 J [1] SEAL-U-CUP  
12. 329-2588 J [1] RING-BACKUP  
   
    PARTS SHOWN IN GRAPHIC(S) WITHOUT A REFERENCE NUMBER ARE NOT SERVICED SEPARATELY
   
    AVAILABLE REPAIR KIT(S):
  371-2737 J [1] KIT-HYD CYLINDER SEAL  
  J   KIT MARKED J SERVICES PART(S) MARKED J
  M   METRIC PART
 

#SEBP59700349
 

378-7963: CYLINDER GP-TILT

378-7963 CYLINDER GP-TILT -RH
70-MM (2.8-IN) BORE X 354-MM (13.9-IN) STROKE
PART OF 375-0713 CYLINDER GP-HYDRAULIC
i05163092 SEBP5970
3787963 CYLINDER GP-TILT Parts scheme
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Parts for your 257D SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 140-2392 J [1] SEAL-LIP TYPE  
2. 161-7145 J [1] SEAL-PISTON  
3. [1] CYLINDER AS  
  [1] CAP  
4. 376-3921 [1] ROD AS  
5. 376-3927 [1] HEAD  
6. 376-3931 [1] PISTON  
7. 107-4057 J [1] SEAL-O-RING  
8. 151-2566 J [1] RING-WEAR  
9. 162-0177 [2] PLUG AS  
    (EACH INCLUDES)
  3J-1907 [1] SEAL-O-RING  
  9S-8004 [1] PLUG (9/16-18-THD)  
10. 296-5140 [1] RING-WEAR  
11. 299-1379 J [1] SEAL-U-CUP  
12. 329-2589 J [1] RING-BACKUP  
13. 3B-8489 [1] FITTING-GREASE (1/8-27 PTF)  
14. 3P-0439 J [1] SEAL-O-RING  
15. 6V-8398 [2] SEAL-O-RING  
16. 9X-6611 M [1] SETSCREW-SOCKET (M10X1.5X16-MM)  
   
  3K-2151 F [1] BUSHING  
   
    AVAILABLE REPAIR KIT(S):
  371-2760 J [1] KIT-HYD CYLINDER SEAL  
  F   NOT SHOWN
  J   KIT MARKED J SERVICES PART(S) MARKED J
  M   METRIC PART
 

Information:

Operation and Maintenance Manual
Tilt Cylinder Bearings and Bucket Linkage Bearings - Lubricate
D-Series and D2-Series Compact Track Loaders (CTL), Multi-Terrain Loaders (MTL), and Skid Steer Loaders (SSL)
Lift Arm and Cylinder Linkage - Lubricate
D-Series and D2-Series Compact Track Loaders (CTL), Multi-Terrain Loaders (MTL), and Skid Steer Loaders (SSL)
Special Instruction
Hydraulic Cylinder Repair Process {7562}
Hydraulic Cylinder Repair Process {7562}
Hydraulic Cylinder Honing {7562}
Hydraulic Cylinder Honing {7562}
Procedure to Test the Position Sensor of a Hydraulic Cylinder {1439, 7562}
Procedure to Test the Position Sensor of a Hydraulic Cylinder {1439, 7562}
Reuse And Salvage Guidelines
Testing Hydraulic Cylinders Using the <NOBR>188-3926</NOBR> Caterpillar Cylinder Tester and the <NOBR> 9U-6803</NOBR> Caterpillar Cylinder Tester {0784, 7562}
Testing Hydraulic Cylinders Using the 188-3926 Caterpillar Cylinder Tester and the 9U-6803 Caterpillar Cylinder Tester {0784, 7562}
Hydraulic Cylinder Repair Process {7562}
Hydraulic Cylinder Repair Process {7562}
Hydraulic Cylinder Honing {7562}
Hydraulic Cylinder Honing {7562}
Hydraulic Cylinder Seal Failure Analysis {7555, 7562}
Hydraulic Cylinder Seal Failure Analysis {7555, 7562}
Inspection and Salvage of Hydraulic Cylinder Components {7562}
Inspection and Salvage of Hydraulic Cylinder Components {7562}
Measuring Bores and Installing Seals in Standard and Oversized Hydraulic Cylinders {5100, 7562}
Measuring Bores and Installing Seals in Standard and Oversized Hydraulic Cylinders {5100, 7562}
Machining the O-ring Groove into the Face of Oversized Bolted Head Hydraulic Cylinders {0677, 5100, 7562}
Machining the O-ring Groove into the Face of Oversized Bolted Head Hydraulic Cylinders {0677, 5100, 7562}
Contamination Control Guidelines
Hydraulic Cylinder Honing {7562}
Hydraulic Cylinder Honing {7562}
Applied Failure Analysis
Hydraulic Cylinder Seal Failure Analysis {7555, 7562}
Hydraulic Cylinder Seal Failure Analysis {7555, 7562}
Bench Test Procedures
Testing Hydraulic Cylinders Using the <NOBR>188-3926</NOBR> Caterpillar Cylinder Tester and the <NOBR> 9U-6803</NOBR> Caterpillar Cylinder Tester {0784, 7562}
Testing Hydraulic Cylinders Using the 188-3926 Caterpillar Cylinder Tester and the 9U-6803 Caterpillar Cylinder Tester {0784, 7562}
Disassembly and Assembly
Tilt Cylinder - Remove and Install
259D, 279D, 289D, 299D and 299D XHP Compact Track Loaders, 257D, 277D, 287D, 297D and 297D XHP Multi Terrain Loaders and 236D, 242D, 246D, 262D, 272D and 272D XHP Skid Steer Loaders Machine Systems
Coupler Cylinder - Remove and Install
259D, 279D, 289D, 299D and 299D XHP Compact Track Loaders, 257D, 277D, 287D, 297D and 297D XHP Multi Terrain Loaders and 236D, 242D, 246D, 262D, 272D and 272D XHP Skid Steer Loaders Machine Systems
Lift Cylinder - Remove and Install
259D, 279D, 289D, 299D and 299D XHP Compact Track Loaders, 257D, 277D, 287D, 297D and 297D XHP Multi Terrain Loaders and 236D, 242D, 246D, 262D, 272D and 272D XHP Skid Steer Loaders Machine Systems

Caterpillar Parts SIS Catalog 257D :

CYLINDER GP-BUCKET
278-1969 CYLINDER GP-BUCKET
485-0416 CONTROL AR-HYDRAULIC
485-0414 CONTROL AR-HYDRAULIC
485-0413 CONTROL AR-HYDRAULIC
485-0412 CONTROL AR-HYDRAULIC
485-0410 CONTROL AR-HYDRAULIC
ACCUMULATOR GP-RIDE CONTROL
310-8461 ACCUMULATOR GP-RIDE CONTROL
ACCUMULATOR GP-HYDRAULIC
227-8807 ACCUMULATOR GP-HYDRAULIC
CYLINDER GP-HYDRAULIC
375-0713 CYLINDER GP-HYDRAULIC
CYLINDER GP-LIFT
380-5668 CYLINDER GP-LIFT
CYLINDER GP-TILT
378-7963 CYLINDER GP-TILT
CYLINDER GP-TILT
378-7964 CYLINDER GP-TILT
345-5925 HYDRAULIC AR
388-8135 HYDRAULIC AR
467-8083 HYDRAULIC AR
467-8084 HYDRAULIC AR
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