AVSPARE.COM
parts catalog

258-2557 PUMP & MTG GP-WORK TOOL -HIGH FLOW S/N DWS1815-1815 PART OF 258-3182 HYDRAULIC AR AN ATTACHMENT 256C




HYDRAULIC SYSTEM

PUMP GP
 

#SEBP45710440
 

258-2557: PUMP & MTG GP-WORK TOOL

258-2557 PUMP & MTG GP-WORK TOOL -HIGH FLOW
S/N DWS1815-1815
PART OF 258-3182 HYDRAULIC AR
AN ATTACHMENT
i04491692 SEBP4571
  For full view, you need register

Parts for your 256C SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 341-7659 CY [1] PUMP GP-PISTON (WORK TOOL)  
2. 258-2555 Y [1] PUMP GP-GEAR (WORK TOOL HYDRAULIC)  
3. 101-7404 M [2] BOLT-SOCKET HEAD (M10X1.5X30-MM)  
4. 5P-3863 [1] SEAL-O-RING  
5. 8T-4121 [2] WASHER-HARD (11X21X2.5-MM THK)  
6. 8T-4223 [2] WASHER-HARD (13.5X25.5X3-MM THK)  
7. 8T-4956 M [2] BOLT (M12X1.75X35-MM)  
8. 8T-5049 [1] SEAL-O-RING  
  C   CHANGE FROM PREVIOUS TYPE
  M   METRIC PART
  Y   SEPARATE ILLUSTRATION
 

#SEBP45710441
 

258-2557: PUMP & MTG GP-WORK TOOL

258-2557 PUMP & MTG GP-WORK TOOL -HIGH FLOW
S/N DWS1818-1833
PART OF 258-3182 HYDRAULIC AR
AN ATTACHMENT
i04491730 SEBP4571
  For full view, you need register

Parts for your 256C SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 258-2554 CY [1] PUMP GP-PISTON (HIGH FLOW)(WORK TOOL)  
2. 258-2555 Y [1] PUMP GP-GEAR (WORK TOOL HYDRAULIC)  
3. 101-7404 M [2] BOLT-SOCKET HEAD (M10X1.5X30-MM)  
4. 5P-3863 [1] SEAL-O-RING  
5. 8T-4121 [2] WASHER-HARD (11X21X2.5-MM THK)  
6. 8T-4223 [2] WASHER-HARD (13.5X25.5X3-MM THK)  
7. 8T-4956 M [2] BOLT (M12X1.75X35-MM)  
8. 8T-5049 [1] SEAL-O-RING  
  C   CHANGE FROM PREVIOUS TYPE
  M   METRIC PART
  R   REMANUFACTURED PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
 

#SEBP45710442
 

258-2557: PUMP & MTG GP-WORK TOOL

258-2557 PUMP & MTG GP-WORK TOOL -HIGH FLOW
S/N DWS1834-UP
PART OF 258-3182 HYDRAULIC AR
AN ATTACHMENT
i04491790 SEBP4571
  For full view, you need register

Parts for your 256C SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 341-7659 CY [1] PUMP GP-PISTON  
2. 258-2555 Y [1] PUMP GP-GEAR  
3. 101-7404 M [2] BOLT-SOCKET HEAD (M10X1.5X30-MM)  
4. 5P-3863 [1] SEAL-O-RING  
5. 8T-4121 [2] WASHER-HARD (11X21X2.5-MM THK)  
6. 8T-4223 [2] WASHER-HARD (13.5X25.5X3-MM THK)  
7. 8T-4956 M [2] BOLT (M12X1.75X35-MM)  
8. 8T-5049 [1] SEAL-O-RING  
  C   CHANGE FROM PREVIOUS TYPE
  M   METRIC PART
  Y   SEPARATE ILLUSTRATION
 

#SEBP45710443
 

258-2555: PUMP GP-GEAR

258-2555 PUMP GP-GEAR
S/N DWS1-UP
PART OF 258-2557 PUMP & MTG GP-WORK TOOL
AN ATTACHMENT
i04528049 SEBP4571
  For full view, you need register

Parts for your 256C SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8T-6685 M [4] BOLT (M10X1.5X110-MM)  
2. 8T-5095 [4] WASHER-PLATED (11X16X2-MM THK)  
   
    PARTS SHOWN IN GRAPHIC(S) WITHOUT A REFERENCE NUMBER ARE NOT SERVICED SEPARATELY
   
    AVAILABLE REPAIR KIT(S):
  278-8715 [1] KIT-SEAL  
    (INCLUDES PARTS MARKED "J" IN GRAPHIC)
  M   METRIC PART
 

#SEBP45710444
 

258-3261: PUMP GP-GEAR

258-3261 PUMP GP-GEAR
S/N DWS1-UP
PART OF 258-3401 PUMP GP-PISTON & GEAR
AN ATTACHMENT
i04533654 SEBP4571
  For full view, you need register

Parts for your 256C SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8T-6685 M [4] BOLT (M10X1.5X110-MM)  
2. 8T-5095 [4] WASHER-PLATED (11X16X2-MM THK)  
   
    PARTS SHOWN IN GRAPHIC(S) WITHOUT A REFERENCE NUMBER ARE NOT SERVICED SEPARATELY
   
    AVAILABLE REPAIR KIT(S):
  278-8715 [1] KIT-SEAL (GEAR PUMP)  
    (INCLUDES PARTS MARKED "J" IN GRAPHIC)
  M   METRIC PART
 

#SEBP45710445
 

258-2554: PUMP GP-PISTON

258-2554 PUMP GP-PISTON -HIGH FLOW
S/N DWS1-1833
PART OF 258-2557 PUMP & MTG GP-WORK TOOL, 258-3401 PUMP GP-PISTON & GEAR
AN ATTACHMENT
i02614218 SEBP4571
  For full view, you need register

Parts for your 256C SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 232-3587 [1] KIT-BEARING (PISTON PUMP)  
2. 232-3586 [1] KIT-BEARING (PISTON PUMP)  
    (EACH BEARING KIT INCLUDES TAPERED ROLLER BEARING)
3. 260-3146 [1] SWASHPLATE  
4. 260-3149 [1] KIT-CYLINDER (PISTON PUMP)  
    (INCLUDES PISTON AS, SLIPPER RETAINER, GUIDE, PINS, CYLINDER BLOCK, SPRING SEATS, SPRING & RING)
5. 260-3147 [1] PLATE  
6. 260-3145 [1] KIT-SWASHPLATE (PISTON PUMP)  
    (INCLUDES PINS & BEARINGS)
7. 278-8718 [1] VALVE GP-PUMP CONTROL  
  3J-7354 [4] SEAL-O-RING  
  6J-2245 [1] SEAL-O-RING  
  234-4173 [4] SEAL-O-RING  
  307-3049 [1] PLUG AS  
8. 278-8719 [1] SHAFT-DRIVE  
9. 6J-7855 [1] RING-RETAINING  
10. 9S-8006 [2] PLUG (7/8-14-THD)  
11. 113-2004 M [4] BOLT-SOCKET HEAD (M12X1.75X45-MM)  
12. 278-8722 [1] ADAPTER  
13. 307-3049 J [1] PLUG AS  
14. 2M-9780 J [2] SEAL-O-RING  
15. 359-5230 [1] ROD-PISTON  
   
    AVAILABLE REPAIR KIT(S):
  307-3043 J [1] KIT-SEAL (PISTON PUMP)  
    (INCLUDES O-RINGS SEALS, LIP SEAL, SEAL RINGS & PLUG-SPECIAL)
  J   KIT MARKED J SERVICES PART(S) MARKED J
  M   METRIC PART
 

#SEBP45710446
 

341-7659: PUMP GP-PISTON

341-7659 PUMP GP-PISTON -HIGH FLOW
S/N DWS1815-1817; DWS1834-UP
PART OF 258-2557 PUMP & MTG GP-WORK TOOL, 258-3401 PUMP GP-PISTON & GEAR
AN ATTACHMENT
i04454872 SEBP4571
  For full view, you need register

Parts for your 256C SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 258-5193 Y [1] ROTATING GP-PUMP  
2. 335-8209 [1] PISTON-CONTROL  
3. 274-7452 [1] LINK-CONTROL  
4. 197-1762 [1] SWASHPLATE  
5. 358-4996 [1] SHAFT-DRIVE  
6. 198-5351 [1] PLUG  
7. 127-9490 [1] SPRING (BIAS)  
8. 148-1238 [1] SHIM (3-MM THK)  
9. 185-0263 [1] BEARING  
10. 203-8609 [1] CUP-BEARING  
11. 105-3035 [1] CONE-BEARING  
12. 358-4999 [2] BEARING-CRADLE  
13. 5P-3863 [1] SEAL-O-RING  
14. 8C-3110 [1] RING-RETAINING  
15. 105-3489 M [4] BOLT-SOCKET HEAD (M12X1.75X80-MM)  
16. 335-8229 [1] PIN  
17. 9S-8006 [2] PLUG (7/8-14-THD)  
18. 2M-9780 [2] SEAL-O-RING  
19. 6R-7943 M [2] SCREW (M5X0.8X15-MM)  
20. 358-4997 [1] ADAPTER  
21. 348-5974 Y [1] VALVE GP-PUMP CONTROL (PRESSURE, FLOW COMPENSATOR)  
   
    AVAILABLE REPAIR KIT(S):
  345-8005 [1] KIT-SEAL (PISTON PUMP)  
    (INCLUDES SHAFT SEAL & O-RING SEAL)
  M   METRIC PART
  Y   SEPARATE ILLUSTRATION
 

#SEBP45710447
 

258-3401: PUMP GP-PISTON & GEAR

258-3401 PUMP GP-PISTON & GEAR
S/N DWS1-1833
PART OF 258-3733 HYDRAULIC AR
AN ATTACHMENT
i02636754 SEBP4571
  For full view, you need register

Parts for your 256C SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 258-2554 Y [1] PUMP GP-PISTON (HIGH FLOW)(WORK TOOL)  
2. 258-3261 Y [1] PUMP GP-GEAR (WORK TOOL HYDRAULIC)  
3. 101-7404 M [2] BOLT-SOCKET HEAD (M10X1.5X30-MM)  
4. 5P-3863 [1] SEAL-O-RING  
5. 8T-4121 [2] WASHER-HARD (11X21X2.5-MM THK)  
6. 8T-4223 [2] WASHER-HARD (13.5X25.5X3-MM THK)  
7. 8T-4956 M [2] BOLT (M12X1.75X35-MM)  
8. 8T-5049 [1] SEAL-O-RING  
  M   METRIC PART
  R   REMANUFACTURED PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
 

#SEBP45710448
 

258-3401: PUMP GP-PISTON & GEAR

258-3401 PUMP GP-PISTON & GEAR
S/N DWS1834-UP
PART OF 258-3733 HYDRAULIC AR
AN ATTACHMENT
i04523917 SEBP4571
  For full view, you need register

Parts for your 256C SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 341-7659 CY [1] PUMP GP-PISTON (WORK TOOL)  
2. 258-3261 Y [1] PUMP GP-GEAR (WORK TOOL HYDRAULIC)  
3. 101-7404 M [2] BOLT-SOCKET HEAD (M10X1.5X30-MM)  
4. 5P-3863 [1] SEAL-O-RING  
5. 8T-4121 [2] WASHER-HARD (11X21X2.5-MM THK)  
6. 8T-4223 [2] WASHER-HARD (13.5X25.5X3-MM THK)  
7. 8T-4956 M [2] BOLT (M12X1.75X35-MM)  
8. 8T-5049 [1] SEAL-O-RING  
  C   CHANGE FROM PREVIOUS TYPE
  M   METRIC PART
  Y   SEPARATE ILLUSTRATION
 

#SEBP45710449
 

258-5193: ROTATING GP-PUMP

258-5193 ROTATING GP-PUMP
S/N DWS1815-UP
PART OF 341-7659 PUMP GP-PISTON
Type 1
AN ATTACHMENT
i02209374 SEBP4571
  For full view, you need register

Parts for your 256C SKID STEER LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 138-8175 [1] BEARING-SPHERICAL  
2. 168-7940 [3] PIN  
3. 096-0015 [1] RING-RETAINING  
4. 233-0455 [1] BARREL  
5. 168-7941 [1] SPRING  
6. 168-7942 [1] WASHER (28.2X36.5X2-MM THK)  
7. 168-7943 [9] PISTON AS-PUMP  
8. 258-5194 [1] PLATE  
9. 175-6796 [1] PLATE-VALVE  
 

Information:

Tool Operating Manual
Replacing Sleeve Bearings in Tyrone Gear Pumps and Motors (Used on Series 7 and 8, Iron and Aluminum Housings){0738, 5061, 5073, 7551}
Replacing Sleeve Bearings in Tyrone Gear Pumps and Motors (Used on Series 7 and 8, Iron and Aluminum Housings){0738, 5061, 5073, 7551}
4C-9910 Portable Hydraulic Tester (Flow 125 GPM) {0599, 0784, 5050, 5057, 5095}
4C-9910 Portable Hydraulic Tester (Flow 125 GPM) {0599, 0784, 5050, 5057, 5095}
Service Magazine

Caterpillar Parts SIS Catalog 256C :

Truck sale:

 
Caterpillar 256C
- Skid steer loaders
BLANCHARD MACHINERY CO.
22.000 
Caterpillar 256C, Kompaktlader, Bau-Und Bergbauausrüstung
- Skid Steer Loaders
BUTLER MACHINERY COMPANY
Back to top
The names Cat, Caterpillar, John Deere, Komatsu, Volvo, Hitachi, Doosan, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
AVSpare.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only. Cat® and Caterpillar® are registered trademarks of Caterpillar, Inc.