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129-7834 CYLINDER & SEAL GP-BUCKET S/N 4SS1-UP; 9GS1-UP PART OF 129-7833 CYLINDER & LINES GP-BUCKET AN ATTACHMENT 345B L




HYDRAULIC SYSTEM

CYLINDER GP
 

#SEBP26930340
 

129-7834: CYLINDER & SEAL GP-BUCKET

129-7834 CYLINDER & SEAL GP-BUCKET
S/N 4SS1-UP; 9GS1-UP
PART OF 129-7833 CYLINDER & LINES GP-BUCKET
AN ATTACHMENT
i00498184 SEBP2693
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Parts for your 345B L EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9X-4597 [2] SEAL-LIP TYPE  
2. 129-7835 Y [1] CYLINDER GP-BUCKET  
3. 9X-4598 [2] SEAL-LIP TYPE  
4. 3B-8489 [2] FITTING-GREASE (1/8-27 PTF)  
  Y   SEPARATE ILLUSTRATION
 

#SEBP26930341
 

126-2085: CYLINDER & SEAL GP-CTWT

126-2085 CYLINDER & SEAL GP-CTWT
S/N 4SS1-UP; 9GS1-UP
REMOVAL
PART OF 127-7524 COUNTERWEIGHT AR
AN ATTACHMENT
i00513891 SEBP2693
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Parts for your 345B L EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 123-1078 Y [1] CYLINDER GP-COUNTERWEIGHT  
2. 3B-8489 [2] FITTING-GREASE (1/8-27 PTF)  
3. 093-1434 [4] SEAL-LIP TYPE  
  Y   SEPARATE ILLUSTRATION
 

#SEBP26930342
 

129-7831: CYLINDER & SEAL GP-STICK

129-7831 CYLINDER & SEAL GP-STICK
S/N 4SS1-UP; 9GS1-UP
PART OF 129-7830 CYLINDER & LINES GP-STICK
Type 1
AN ATTACHMENT
i00498120 SEBP2693
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Parts for your 345B L EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 129-7832 Y [1] CYLINDER GP-STICK  
2. 9X-4597 [4] SEAL-LIP TYPE  
3. 3B-8489 [1] FITTING-GREASE (1/8-27 PTF)  
  Y   SEPARATE ILLUSTRATION
 

#SEBP26930343
 

129-7831: CYLINDER & SEAL GP-STICK

129-7831 CYLINDER & SEAL GP-STICK
S/N 4SS1-UP; 9GS1-UP
PART OF 129-7830 CYLINDER & LINES GP-STICK
Type 2
AN ATTACHMENT
i01760911 SEBP2693
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Parts for your 345B L EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 200-3525 Y [1] CYLINDER GP-STICK  
2. 9X-4597 [4] SEAL-LIP TYPE  
3. 3B-8489 [1] FITTING-GREASE (1/8-27 PTF)  
  Y   SEPARATE ILLUSTRATION
 

#SEBP26930344
 

129-7829: CYLINDER GP-BOOM

129-7829 CYLINDER GP-BOOM
S/N 4SS1-UP; 9GS1-UP
160MM (6.29IN) BORE X 1575MM (62IN) STROKE
PART OF 129-7828 CYLINDER & SEAL GP-BOOM
AN ATTACHMENT
i00498116 SEBP2693
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Parts for your 345B L EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 129-7879 [1] CYLINDER AS  
2. 148-3091 [1] BUSHING  
3. 118-3944 J [1] RING  
4. 9X-3604 J [1] SEAL AS  
5. 096-3201 J [1] RING  
6. 123-2111 [1] PISTON  
7. 6I-6785 J [1] RING-SEAL  
8. 126-2084 [1] STOP  
9. 095-1635 J [1] SEAL-O-RING  
10. 087-5550 J [1] RING-BACKUP  
11. 123-2112 M [1] LOCKNUT-SPECIAL (M90X2-THD)  
12. 7Y-5239 M [8] BOLT-SOCKET HEAD (M24X3X100-MM)  
13. 7Y-4944 [1] RING-RETAINING  
14. 087-5551 [1] HEAD  
15. 114-0762 [1] BUSHING  
16. 123-2031 J [1] SEAL-BUFFER  
17. 7Y-4942 J [1] SEAL-U-CUP  
18. 7Y-4941 J [1] RING-BACKUP  
19. 165-9291 J [1] SEAL-LIP TYPE  
20. 129-7885 [1] ROD AS  
21. 123-2220 [1] BUSHING  
   
    AVAILABLE REPAIR KIT(S):
  168-0760 J [1] KIT-SEAL  
  J   KIT MARKED J INCLUDES PART(S) MARKED J
  M   METRIC PART
  R   REMANUFACTURED PART MAY BE AVAILABLE
 

#SEBP26930345
 

200-3535: CYLINDER GP-BOOM

200-3535 CYLINDER GP-BOOM
S/N 4SS1-UP; 9GS1-UP
160MM (6.3 IN) BORE X 1575MM (62.0 IN) STROKE
PART OF 129-7828 CYLINDER & SEAL GP-BOOM
AN ATTACHMENT
i01758475 SEBP2693
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Parts for your 345B L EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 129-7879 [1] CYLINDER AS  
1A. 148-3091 [1] BUSHING  
2. 123-2112 M [1] LOCKNUT-SPECIAL (M90X2-THD)  
3. 118-3944 J [1] RING  
4. 9X-3604 J [1] SEAL AS  
5. 096-3201 J [1] RING  
6. 123-2111 [1] PISTON  
7. 191-3128 J [1] RING-SEAL  
8. 126-2084 [1] STOP  
9. 095-1635 J [1] SEAL-O-RING  
10. 087-5550 J [1] RING-BACKUP  
11. 7Y-4944 [1] RING-RETAINING  
12. 087-5551 [1] HEAD  
13. 114-0762 [1] BUSHING  
14. 128-9266 J [1] SEAL-BUFFER  
15. 170-9865 J [1] SEAL-U-CUP  
16. 7Y-4941 J [1] RING-BACKUP  
17. 165-9291 J [1] SEAL-LIP TYPE  
18. 200-3537 [1] ROD AS  
18A. 141-3420 [1] BUSHING  
19. 7Y-5239 M [8] BOLT-SOCKET HEAD (M24X3X100-MM)  
   
    AVAILABLE REPAIR KIT(S):
  200-3536 J [1] KIT-SEAL  
  J   KIT MARKED J SERVICES PART(S) MARKED J
  M   METRIC PART
  R   REMANUFACTURED PART MAY BE AVAILABLE
 

#SEBP26930346
 

118-3935: CYLINDER GP-BUCKET

118-3935 CYLINDER GP-BUCKET
S/N 4SS1-UP; 9GS1-UP
160-MM (6.3-IN) BORE X 1356-MM (53.39-IN) STROKE
PART OF 118-3934 CYLINDER & SEAL GP-BUCKET
AN ATTACHMENT
i00482565 SEBP2693
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Parts for your 345B L EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 118-3936 [1] CYLINDER AS  
1A. 087-5533 [1] BUSHING  
2. 123-2112 M [1] LOCKNUT-SPECIAL (M90X2-THD)  
3. 118-3944 J [1] RING  
4. 9X-3604 J [1] SEAL AS  
5. 096-3201 J [1] RING  
6. 123-2111 [1] PISTON  
7. 095-1635 J [1] SEAL-O-RING  
8. 087-5550 [1] RING-BACKUP  
9. 7Y-4944 [1] RING-RETAINING  
10. 114-0762 [1] BUSHING  
11. 128-9266 [1] SEAL-BUFFER  
12. 087-5551 [1] HEAD  
13. 7Y-5239 M [8] BOLT-SOCKET HEAD (M24X3X100-MM)  
14. 170-9865 [1] SEAL-U-CUP  
15. 7Y-4941 J [1] RING-BACKUP  
16. 165-9291 J [1] SEAL-LIP TYPE  
17. 247-8904 [1] ROD AS  
17A. 087-5548 [1] BUSHING  
   
    AVAILABLE REPAIR KIT(S):
  248-1172 J [1] KIT-SEAL (BUCKET CYLINDER)  
  J   KIT MARKED J SERVICES PART(S) MARKED J
  M   METRIC PART
  R   REMANUFACTURED PART MAY BE AVAILABLE
 

#SEBP26930347
 

129-7835: CYLINDER GP-BUCKET

129-7835 CYLINDER GP-BUCKET
S/N 4SS1-UP; 9GS1-UP
170-MM (6.7-IN) BORE X 1366-MM (54-IN) STROKE
PART OF 129-7834 CYLINDER & SEAL GP-BUCKET
AN ATTACHMENT
i00498186 SEBP2693
  For full view, you need register

Parts for your 345B L EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 129-7866 [1] CYLINDER AS  
1A. 087-5379 [1] BUSHING  
2. 7Y-4956 M [1] LOCKNUT (M90X2-THD)  
3. 105-7262 J [1] RING-WEAR  
4. 9X-3607 J [1] SEAL AS  
5. 096-5609 J [1] RING  
6. 7I-7181 [1] PISTON  
7. 095-1726 J [1] SEAL-O-RING  
8. 7Y-4945 J [1] RING-BACKUP  
9. 7Y-4944 [1] RING-RETAINING  
10. 114-0761 [1] BUSHING  
11. 128-9266 J [1] SEAL-BUFFER  
12. 358-8521 [1] HEAD  
13. 170-9865 J [1] SEAL-U-CUP  
14. 7Y-4941 J [1] RING-BACKUP  
15. 165-9291 J [1] SEAL-LIP TYPE  
16. 369-0572 [1] ROD AS  
16A. 462-2004 [1] BUSHING  
17. 7Y-5239 M [8] BOLT-SOCKET HEAD (M24X3X100-MM)  
   
    AVAILABLE REPAIR KIT(S):
  248-1174 J [1] KIT-SEAL (BOOM CYLINDER)  
  J   KIT MARKED J SERVICES PART(S) MARKED J
  M   METRIC PART
  R   REMANUFACTURED PART MAY BE AVAILABLE
 

#SEBP26930348
 

123-1078: CYLINDER GP-COUNTERWEIGHT

123-1078 CYLINDER GP-COUNTERWEIGHT
S/N 4SS1-UP; 9GS1-UP
120.6MM (4.74IN) BORE X 810MM (32IN) STROKE
PART OF 126-2085 CYLINDER & SEAL GP-CTWT
AN ATTACHMENT
i00513619 SEBP2693
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Parts for your 345B L EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 123-1079 [1] CYLINDER AS  
2. 5J-3488 [1] LOCKNUT (2-1/4-12-THD)  
3. 4T-8588 [1] SEAL AS  
4. 8T-8390 [1] RING-WEAR  
5. 139-3326 [1] PISTON  
6. 2J-3961 [1] RING-BACKUP  
7. 175-7903 [1] SEAL-O-RING  
8. 114-8135 [1] HEAD  
9. 123-1082 [1] ROD AS  
9A. 123-3790 [1] BUSHING  
10. 225-3284 [1] SEAL-WIPER  
11. 167-2319 [1] SEAL-U-CUP  
12. 167-2208 [1] SEAL AS-BUFFER  
13. 8C-9161 [1] RING-WEAR  
  R   REMANUFACTURED PART MAY BE AVAILABLE
 

#SEBP26930349
 

129-7832: CYLINDER GP-STICK

129-7832 CYLINDER GP-STICK
S/N 4SS1-UP; 9GS1-UP
190MM (7.48IN) BORE X 1758MM (69IN) STROKE
PART OF 129-7831 CYLINDER & SEAL GP-STICK
AN ATTACHMENT
i00498121 SEBP2693
  For full view, you need register

Parts for your 345B L EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 129-7893 [1] CYLINDER AS  
1A. 126-1956 [1] BUSHING  
2. 103-8345 [1] RING-RETAINING  
3. 107-6579 [1] RING  
4. 103-8353 [1] STOP  
5. 126-1971 M [1] LOCKNUT-SPECIAL  
6. 126-1974 J [1] RING  
7. 125-1286 J [1] SEAL AS  
8. 126-1976 J [1] RING  
9. 126-1973 [1] PISTON  
10. 087-5389 J [1] RING-SEAL  
11. 087-5390 [1] STOP  
12. 095-1730 J [1] SEAL-O-RING  
13. 126-1978 J [1] RING-BACKUP  
14. 087-5393 [1] RING-RETAINING  
15. 114-0763 [1] BUSHING  
16. 126-2047 [1] HEAD  
17. 126-2108 J [1] SEAL-BUFFER  
18. 087-5396 J [1] SEAL-U-CUP  
19. 087-5397 J [1] RING-BACKUP  
20. 165-9293 J [1] SEAL-LIP TYPE  
21. 129-7898 [1] ROD AS  
21A. 126-1956 [1] BUSHING  
22. 7X-2489 M [10] BOLT (M24X3X100-MM)  
23. 095-0930 [2] RING-RETAINING (EXTERNAL)  
   
    AVAILABLE REPAIR KIT(S):
  126-1979 J [1] KIT-SEAL  
  J   KIT MARKED J INCLUDES PART(S) MARKED J
  M   METRIC PART
  R   REMANUFACTURED PART MAY BE AVAILABLE
 

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
Troubleshooting Guide For Boom Or Stick Drop, Implement Drift, Or A Powered Movement Of Any Implement On Certan Excavators
Troubleshooting Guide For Boom Or Stick Drop, Implement Drift, Or A Powered Movement Of Any Implement On Certan Excavators
The Hydraulic Cylinders May Leak Hydraulic Fluid On Certain Excavators
The Hydraulic Cylinders May Leak Hydraulic Fluid On Certain Excavators
The Strength Of The Rod Assembly Is Increased For The Boom Cylinder And The Stick Cylinder On Certain Excavtors
The Strength Of The Rod Assembly Is Increased For The Boom Cylinder And The Stick Cylinder On Certain Excavtors
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}
Specifications
Bucket Cylinder
345B Excavator and 345B Material Handler Machine System Specifications
Bucket Cylinder
345B Excavator and 345B Material Handler Machine System Specifications
Stick Cylinder
345B Excavator and 345B Material Handler Machine System Specifications
Boom Cylinder
345B Excavator and 345B Material Handler Machine System Specifications
Boom Cylinder Lines - Left Hand
345B Excavator and 345B Material Handler Machine System Specifications
Boom Cylinder Lines - Right Hand
345B Excavator and 345B Material Handler Machine System Specifications
Counterweight Cylinder
345B Excavator and 345B Material Handler Machine System Specifications
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}
Systems Operation
Cylinders (Boom, Stick and Bucket)
345B Excavator Hydraulic System
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}
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}
Information Release Memo
PRODUCT LINE ADDITIONS: REMANUFACTURED CYLINDERS AND RODS
PRODUCT LINE ADDITIONS: REMANUFACTURED CYLINDERS AND RODS
Testing and Adjusting
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
Boom Cylinder - Remove
345B, 345B Series II and W345B Series II Excavators Machine Systems
Boom Cylinder - Install
345B, 345B Series II and W345B Series II Excavators Machine Systems
Bucket Cylinder - Remove
345B, 345B Series II and W345B Series II Excavators Machine Systems
Bucket Cylinder - Install
345B, 345B Series II and W345B Series II Excavators Machine Systems
Stick Cylinder - Remove
345B, 345B Series II and W345B Series II Excavators Machine Systems
Stick Cylinder - Install
345B, 345B Series II and W345B Series II Excavators Machine Systems
Counterweight Cylinder - Remove
345B, 345B Series II and W345B Series II Excavators Machine Systems
Counterweight Cylinder - Install
345B, 345B Series II and W345B Series II Excavators Machine Systems
Service Magazine

Caterpillar Parts SIS Catalog 345B L :

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