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2K3777 LIFT CYLINDER GROUP--5.5" x 29.25"--R.H.--Type 2 2K3778 LIFT CYLINDER GROUP--5.5" x 29.25"--L.H.--Type 2 Refer also to Page 120G for special parts 955C




HYDRAULIC SYSTEM

CYLINDER GP
 

#UE0325630210
 

2K-3777: LIFT CYLINDER GROUP

2K3777 LIFT CYLINDER GROUP--5.5" x 29.25"--R.H.--Type 2
2K3778 LIFT CYLINDER GROUP--5.5" x 29.25"--L.H.--Type 2
Refer also to Page 120G for special parts
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Parts for your 955C TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  4J-4554 [1] SPACER  
  1K-6874 [1] NUT  
  2K-4513 [1] BUSHING  
    (PART OF CYLINDER ASSEM. 2K8511 & 2K8512)
  3B-4635 [1] COTTER PIN  
  4J-4606 [1] RING  
  3J-9025 [1] SEAL ASSEM.  
  4J-4609 [1] PISTON  
  2K-8511 [1] CYLINDER ASSEM.(R.H.)  
    (PART OF 2K3777 CYLINDER GRP)
  2K-8512 [1] CYLINDER ASSEM.(L.H.)  
    (PART OF 2K3778 CYLINDER GRP.)
  2H-9247 [1] RING  
  2K-2961 [1] WASHER  
  1K-7103 [2] SHIM  
  0S-1566 [2] BOLT  
  3B-4510 [2] LOCKWASHER  
  2K-3760 [1] ROD ASSEM.  
  2K-4511 [1] BUSHING  
    (PART OF ROD ASSEM. 2K3760)
  1K-6982 [1] SEAL  
  2K-2014 [1] GLAND  
  2K-1891 [3] SHIM  
  2A-1538 [4] BOLT  
  2H-3922 [4] LOCKWASHER  
  1K-7114 [1] PACKING  
  2K-3767 [1] HEAD (R.H.)  
    (PART OF 2K3777 CYLINDER GRP.)
  2K-3768 [1] HEAD (L.H.)  
    (PART OF 2K3778 CYLINDER GRP.)
 

#UE0325630211
 

2K-3778: LIFT CYLINDER GROUP

2K3777 LIFT CYLINDER GROUP--5.5" x 29.25"--R.H.--Type 2
2K3778 LIFT CYLINDER GROUP--5.5" x 29.25"--L.H.--Type 2
Refer also to Page 120G for special parts
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Parts for your 955C TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  4J-4554 [1] SPACER  
  1K-6874 [1] NUT  
  2K-4513 [1] BUSHING  
    (PART OF CYLINDER ASSEM. 2K8511 & 2K8512)
  3B-4635 [1] COTTER PIN  
  4J-4606 [1] RING  
  3J-9025 [1] SEAL ASSEM.  
  4J-4609 [1] PISTON  
  2K-8511 [1] CYLINDER ASSEM.(R.H.)  
    (PART OF 2K3777 CYLINDER GRP)
  2K-8512 [1] CYLINDER ASSEM.(L.H.)  
    (PART OF 2K3778 CYLINDER GRP.)
  2H-9247 [1] RING  
  2K-2961 [1] WASHER  
  1K-7103 [2] SHIM  
  0S-1566 [2] BOLT  
  3B-4510 [2] LOCKWASHER  
  2K-3760 [1] ROD ASSEM.  
  2K-4511 [1] BUSHING  
    (PART OF ROD ASSEM. 2K3760)
  1K-6982 [1] SEAL  
  2K-2014 [1] GLAND  
  2K-1891 [3] SHIM  
  2A-1538 [4] BOLT  
  2H-3922 [4] LOCKWASHER  
  1K-7114 [1] PACKING  
  2K-3767 [1] HEAD (R.H.)  
    (PART OF 2K3777 CYLINDER GRP.)
  2K-3768 [1] HEAD (L.H.)  
    (PART OF 2K3778 CYLINDER GRP.)
 

#UE0325630212
 

2K-3777: LIFT CYLINDER GROUP

2K3777 LIFT CYLINDER GROUP--R.H.--Type 1
2K3778 LIFT CYLINDER GROUP--L.H.--Type 1
Refer also to Page 120G for special parts
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Parts for your 955C TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  2K-3759 [1] RETAINER  
  1K-6874 [1] NUT  
  2K-4513 [1] BUSHING  
    (PART OF CYLINDER ASSEM. 2K8511 & 2K8512)
  3B-4635 [1] COTTER PIN  
  5F-8000 [1] RING  
  2K-1335 [1] PACKING  
  2K-3758 [1] PISTON  
  2K-8511 [1] CYLINDER ASSEM. (R.H.)  
    (PART OF 2K3777 CYLINDER GRP.)
  2K-8512 [1] CYLINDER ASSEM.(L.H.)  
    (PART OF 2K3778 CYLINDER GRP.)
  2H-9247 [1] RING  
  2K-2961 [1] WASHER  
  1K-7103 [2] SHIM  
  0S-1566 [2] BOLT  
  3B-4510 [2] LOCKWASHER  
  2K-3760 [1] ROD ASSEM.  
  2K-4511 [1] BUSHING  
    (PART OF ROD ASSEM. 2K3760)
  1K-6982 [1] SEAL  
  2K-2014 [1] GLAND  
  2K-1891 [3] SHIM  
  2A-1538 [4] BOLT  
  2H-3922 [4] LOCKWASHER  
  1K-7114 [1] PACKING  
  2K-3767 [1] HEAD (R H)  
    (PART OF 2K3777 CYLINDER GRP.)
  2K-3768 [1] HEAD (L.H.)  
    (PART OF 2K3778 CYLINDER GRP.)
 

#UE0325630213
 

2K-3778: LIFT CYLINDER GROUP

2K3777 LIFT CYLINDER GROUP--R.H.--Type 1
2K3778 LIFT CYLINDER GROUP--L.H.--Type 1
Refer also to Page 120G for special parts
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Parts for your 955C TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  2K-3759 [1] RETAINER  
  1K-6874 [1] NUT  
  2K-4513 [1] BUSHING  
    (PART OF CYLINDER ASSEM. 2K8511 & 2K8512)
  3B-4635 [1] COTTER PIN  
  5F-8000 [1] RING  
  2K-1335 [1] PACKING  
  2K-3758 [1] PISTON  
  2K-8511 [1] CYLINDER ASSEM. (R.H.)  
    (PART OF 2K3777 CYLINDER GRP.)
  2K-8512 [1] CYLINDER ASSEM.(L.H.)  
    (PART OF 2K3778 CYLINDER GRP.)
  2H-9247 [1] RING  
  2K-2961 [1] WASHER  
  1K-7103 [2] SHIM  
  0S-1566 [2] BOLT  
  3B-4510 [2] LOCKWASHER  
  2K-3760 [1] ROD ASSEM.  
  2K-4511 [1] BUSHING  
    (PART OF ROD ASSEM. 2K3760)
  1K-6982 [1] SEAL  
  2K-2014 [1] GLAND  
  2K-1891 [3] SHIM  
  2A-1538 [4] BOLT  
  2H-3922 [4] LOCKWASHER  
  1K-7114 [1] PACKING  
  2K-3767 [1] HEAD (R H)  
    (PART OF 2K3777 CYLINDER GRP.)
  2K-3768 [1] HEAD (L.H.)  
    (PART OF 2K3778 CYLINDER GRP.)
 

#UE0325630214
 

BUCKET LIFT CONTROL KICKOUT

BUCKET LIFT CONTROL KICKOUT
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Parts for your 955C TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  5B-9079 [2] NUT  
  2K-4268 [1] BELLCRANK ASSEM.  
  1K-6683 [1] BUSHING  
    (PART OF ASSEM. 2K4268)
  2K-0400 [1] YOKE  
  1B-0676 [1] PIN  
  3B-4615 [1] COTTER PIN  
  4F-8686 [2] BUSHING  
    (PART OF ASSEM. 2K4268)
  2H-9239 [1] BRACKET ASSEM.  
  0S-0175 [1] PIN  
  3B-4617 [1] COTTER PIN  
  2K-4277 [1] END  
  2K-4825 [1] ROD  
  1K-6766 [1] COLLAR  
  3B-4622 [1] COTTER PIN  
  4B-3614 [1] SET SCREW  
  1D-5117 [1] NUT  
  2H-6519 [1] PIN  
    (PART OF ASSEM. 2H9239)
  3B-8488 [1] FITTING  
  0S-1591 [2] CAP SCREW  
  3B-4506 [2] LOCKWASHER  
 

#UE0325630215
 

2K-3783: BUCKET ASSEMBLY

2K3783 BUCKET ASSEMBLY--1 1/2 Cu. Yd.--80" Wide
Refer also to Pages 116, 116L and 117 for special parts
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Parts for your 955C TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  2K-4227 [1] HINGE ASSEM.  
    (R.H. OUTER)
  2K-4231 [1] HINGE ASSEM.  
    (R.H. INNER)
  2K-4232 [1] HINGE ASSEM.  
    (L.H. OUTER)
  2K-4228 [1] HINGE ASSEM.  
    (L.H. INNER)
  6B-9990 [10] RIVET  
  2K-6638 [2] REINFORCEMENT  
  2K-4248 [1] CUTTING EDGE  
  4B-4427 [24] RIVET  
 

#UE0325630216
 

4K-2021: TOOTH GROUP

4K2021 TOOTH GROUP
FOR USE WITH 2K3783 BUCKET ASSEMBLY SHOWN ON PAGE 112
For use in normal excavating under highly abrasive conditions
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Parts for your 955C TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  1K-6870 [8] NUT  
  0L-1178 [8] BOLT  
  3K-0001 [8] PIN  
  2K-4556 [8] TOOTH ADAPTER  
  1D-4610 [8] BOLT  
  1K-6870 [16] NUT  
  2A-2523 [32] WASHER  
  2K-0672 [8] PLUG  
  4K-0050 [8] TIP  
 

#UE0325630217
 

BUCKET CONTROL

BUCKET CONTROL
Serial No. 12A1 to 12A3805 inclusive
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Parts for your 955C TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  2K-4178 [2] PIN  
  3B-8489 [2] FITTING  
  1K-7079 [2] WASHER  
  1K-7082 [2] WASHER  
  2K-4512 [2] BUSHING  
    (PART OF ASSEM. 2K4148)
  2K-4712 [2] PIN  
  3B-8489 [2] FITTING  
  1K-7079 [2] WASHER  
  1K-7082 [4] WASHER  
  2K-0703 [6] WASHER  
  0S-1621 [12] CAP SCREW  
  3B-4508 [12] LOCKWASHER  
  2K-4153 [1] BELLCRANK ASSEM.(RH)  
  2K-4154 [1] BELLCRANK ASSEM.(LH)  
  2K-4175 [2] PIN  
  3B-8489 [2] FITTING  
  2K-4174 [2] PLATE  
  0S-1621 [6] CAP SCREW  
  3B-4508 [6] LOCKWASHER  
  2K-4514 [4] BUSHING  
    (2 IN EACH ASSEM. 2K4153 & 2K5134)
  2K-4177 [4] PIN  
  3B-4510 [4] LOCKWASHER  
  2K-4176 [2] PIN  
  3B-8489 [2] FITTING  
  2K-4514 [2] BUSHING  
    (PART OF ASSEM. 2K3682)
  2K-4178 [2] PIN  
  3B-8489 [2] FITTING  
  1K-7079 [4] WASHER  
  1K-7082 [6] WASHER  
  2K-4148 [2] LINK ASSEM. (REAR)  
  2K-4157 [1] LEVER ASSEM. (R H)  
  2K-4158 [1] LEVER ASSEM (L H)  
  2K-3682 [1] ARM ASSEM  
  2K-4508 [2] BUSHING  
    (PART OF ASSEM 2K3682)
  2K-4510 [2] BUSHING  
    (PART OF ASSEM 2K3682)
  1D-4590 [2] BOLT  
  2K-4275 [2] NUT  
  2K-4179 [2] PIN  
  3B-8489 [2] FITTING  
  2K-4509 [2] BUSHING  
    (1 IN EACH ASSEM. 2K5157)
  2K-4180 [4] PIN  
  3B-8489 [4] FITTING  
  2K-0703 [4] WASHER  
  0S-1621 [8] CAP SCREW  
  3B-4508 [8] LOCKWASHER  
  2K-4509 [2] BUSHING  
    (1 IN EACH ASSEM. 2K4148)
  2K-5157 [2] LINK ASSEM. (FRONT)  
  2K-4508 [2] BUSHING  
    (1 IN EACH ASSEM 2K5157)
  2K-4181 [2] PIN  
  3B-8489 [2] FITTING  
  2K-4160 [6] WASHER  
  2B-2006 [2] BOLT  
  1K-6872 [2] NUT  
  1D-4590 [2] BOLT  
  2K-4275 [2] NUT  
  2K-4179 [2] PIN  
  3B-8489 [2] FITTING  
 

#UE0325630218
 

BUCKET CONTROL

BUCKET CONTROL
Effective with Serial No. 12A3806
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Parts for your 955C TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  2K-4178 [2] PIN  
  3B-8489 [2] FITTING  
  1K-7079 [2] WASHER  
  1K-7082 [2] WASHER  
  2K-4512 [2] BUSHING  
    (PART OF ASSEM. 2K4148)
  2K-4712 [2] PIN  
  3B-8489 [2] FITTING  
  1K-7079 [2] WASHER  
  1K-7082 [4] WASHER  
  2K-0703 [6] WASHER  
  0S-1621 [12] BOLT  
  3B-4508 [12] LOCKWASHER  
  2K-4153 [1] BELLCRANK ASSEM. (RH)  
  2K-4154 [1] BELLCRANK ASSEM. (LH)  
  2K-4175 [2] PIN  
  3B-8489 [2] FITTING  
  2K-4174 [2] PLATE  
  0S-1621 [6] BOLT  
  3B-4508 [6] LOCKWASHER  
  2K-4514 [4] BUSHING  
    (2 IN EACH ASSEM 2K4153 & 2K4154)
  2K-4177 [4] PIN  
  3B-4510 [4] LOCKWASHER  
  2K-4176 [2] PIN  
  3B-8489 [2] FITTING  
  2K-4514 [2] BUSHING  
    (PART OF ASSEM. 2K3682)
  2K-4178 [2] PIN  
  3B-8489 [2] FITTING  
  1K-7079 [4] WASHER  
  1K-7082 [6] WASHER  
  2K-4148 [2] LINK ASSEM. (REAR)  
  2K-7411 [1] LEVER ASSEM. (R.H.)  
  2K-7412 [1] LEVER ASSEM. (L.H.)  
  2K-3682 [1] ARM ASSEM.  
  2K-4508 [2] BUSHING  
  2K-3773 [1] CROSS MEMBER  
    (PARTS OF ASSEM. 2K3682)
  2K-4510 [2] BUSHING  
    (PART OF ASSEM. 2K3682)
  1D-4590 [2] BOLT  
  2K-4275 [2] NUT  
  2K-4179 [2] PIN  
  3B-8489 [2] FITTING  
  2K-4509 [2] BUSHING  
    (1 IN EACH ASSEM. 2K5157)
  2K-7418 [4] PIN  
  3B-8489 [4] FITTING  
  2K-0703 [4] WASHER  
  0S-1621 [8] BOLT  
  3B-4508 [8] LOCKWASHER  
  2K-4509 [2] BUSHING  
    (1 IN EACH ASSEM. 2K4148)
  2K-5157 [2] LINK ASSEM. (FRONT)  
  2K-4508 [2] BUSHING  
    (1 IN EACH ASSEM. 2K5157)
  2K-4181 [2] PIN  
  3B-8489 [2] FITTING  
  2K-4160 [6] WASHER  
  1D-4569 [2] BOLT  
  3B-4508 [2] LOCKWASHER  
  1D-4590 [2] BOLT  
  2K-4275 [2] NUT  
  2K-4179 [2] PIN  
  3B-8489 [2] FITTING  
 

#UE0325630219
 

FRAME

FRAME
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Parts for your 955C TRACK LOADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  6B-9194 [4] BOLT  
  1B-4209 [4] NUT  
  3B-4516 [4] LOCKWASHER  
  2K-0703 [4] WASHER (BAR)  
  2K-3706 [2] PIN  
  3B-8489 [2] FITTING  
  0S-1621 [8] CAP SCREW  
  3B-4508 [8] LOCKWASHER  
  2K-3688 [2] PIN  
  3B-8489 [2] FITTING  
  2K-4671 [1] STEP ASSEM.  
  0S-1595 [2] CAP SCREW  
  3B-4508 [2] LOCKWASHER  
  2K-3685 [1] FRAME ASSEM.  
  0S-1595 [6] CAP SCREW  
  3B-4508 [6] LOCKWASHER  
  2K-1747 [6] BOLT  
  1B-4208 [6] NUT  
  3B-4514 [6] LOCKWASHER  
  2K-3770 [1] COVER ASSEM.  
 

Information:

Special Instruction
Instructions for Installation of Oversize Hydraulic Cylinder Seals {7555, 7562}
Instructions for Installation of Oversize Hydraulic Cylinder Seals {7555, 7562}
Installation of Vented Buffer Seal Assembly, U-Cup Seal, and Double Lip Wiper Seal for Hydraulic Cylinders{7562}
Installation of Vented Buffer Seal Assembly, U-Cup Seal, and Double Lip Wiper Seal for Hydraulic Cylinders{7562}
Installation of Double Lip Wiper Seal{7562}
Installation of Double Lip Wiper Seal{7562}
Installation of Double Lip Wiper Seal{7562}
Installation of Double Lip Wiper Seal{7562}
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}
Technical Information Bulletin
Surface Finishes of Cylinder Bores{7562}
Surface Finishes of Cylinder Bores{7562}
Color Change for Cylinder Rod Seals (Wiper, U-Cup and Buffer){5100, 7555, 7562}
Color Change for Cylinder Rod Seals (Wiper, U-Cup and Buffer){5100, 7555, 7562}
Tool Operating Manual
Procedures for Using the 232-4686 Cylinder Washer Tank Group European Union Compliant{0374, 0599, 0680, 0738}
Procedures for Using the 232-4686 Cylinder Washer Tank Group European Union Compliant{0374, 0599, 0680, 0738}
1U-9001 and 1U-9002 Automatic Hone Tooling{0599, 0677, 0738, 7562, 7562}
1U-9001 and 1U-9002 Automatic Hone Tooling{0599, 0677, 0738, 7562, 7562}
Model HCS-40 Hydraulic Cylinder Servicer{0374, 0599, 0700, 0738, 7562}
Model HCS-40 Hydraulic Cylinder Servicer{0374, 0599, 0700, 0738, 7562}
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}
Using the 265-4177, 265-4209 Service Tool Groups to Install Sensors in Position-Sensing Hydraulic Cylinders{0599, 0709, 0738, 1439, 7562, 7562}
Using the 265-4177, 265-4209 Service Tool Groups to Install Sensors in Position-Sensing Hydraulic Cylinders{0599, 0709, 0738, 1439, 7562, 7562}
Using the 9U-7868 and 9U-7869 Spanner Wrench to Remove and install Threaded Gland Cylinder Heads{0374, 0599, 0602, 0738}
Using the 9U-7868 and 9U-7869 Spanner Wrench to Remove and install Threaded Gland Cylinder Heads{0374, 0599, 0602, 0738}
Procedures for Using the 120-9143 Cylinder Washer Tank Group {0374, 0602, 0680, 0738}
Procedures for Using the 120-9143 Cylinder Washer Tank Group {0374, 0602, 0680, 0738}
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}
Reuse Guideline for Hydraulic Cylinder Position Sensor {5574, 5736}
Reuse Guideline for Hydraulic Cylinder Position Sensor {5574, 5736}
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}
HVOF Identification and Polishing (Superfinishing){0674, 0679, 1000, 7000, 7562}
HVOF Identification and Polishing (Superfinishing){0674, 0679, 1000, 7000, 7562}
Thermal Spray Procedures for Hydraulic Cylinder Rods{0679, 7562, 7562}
Thermal Spray Procedures for Hydraulic Cylinder Rods{0679, 7562, 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}
Service Magazine

Caterpillar Parts SIS Catalog 955C :

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