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305-6781 CYLINDER & LINES GP-THUMB PART OF 305-6744, 305-6745 THUMB AR AN ATTACHMENT 308E2 CR MINI HYD EXCAVATOR




HYDRAULIC SYSTEM

CYLINDER GP
 

#SEBP68750190
 

305-6781: CYLINDER & LINES GP-THUMB

305-6781 CYLINDER & LINES GP-THUMB
PART OF 305-6744, 305-6745 THUMB AR
AN ATTACHMENT
i05156532 SEBP6875
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Parts for your 308E2 CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 108-7251 [2] CONNECTOR  
2. 280-2652 [2] VALVE-BALL  
3. 294-0973 [1] TOOL  
4. 305-6717 Y [1] CYLINDER GP-THUMB  
5. 305-6759 I [2] HOSE AS  
6. 439-5338 [1] BRACKET  
7. 439-5339 [1] BRACKET  
8. 148-8364 [2] ELBOW AS  
    (EACH INCLUDES)
  3K-0360 [1] SEAL-O-RING  
  6V-8398 [1] SEAL-O-RING  
  6V-8625 [1] ELBOW  
9. 148-8393 [2] ELBOW AS  
    (EACH INCLUDES)
  6V-9852 [1] ELBOW (SWIVEL)  
  7J-9108 [1] SEAL-O-RING  
10. 148-8446 [2] TEE AS-SWIVEL  
    (EACH INCLUDES)
  6V-9838 [1] TEE-SWIVEL  
  7J-9108 [2] SEAL-O-RING  
11. 3K-0360 [2] SEAL-O-RING  
12. 6V-8398 [2] SEAL-O-RING  
13. 9X-6581 [2] NUT-O-RING SEAL (1-14-THD)  
14. 6V-8939 [2] REDUCER-O-RING  
15. 7J-9108 [2] SEAL-O-RING  
16. 8T-4139 M [4] BOLT (M12X1.75X30-MM)  
18. 8T-4223 [4] WASHER-HARD (13.5X25.5X3-MM THK)  
19. 6V-1889 [2] CLIP (LOOP)  
20. 8T-4121 [4] WASHER-HARD (11X21X2.5-MM THK)  
21. 8T-4133 M [2] NUT (M10X1.5-THD)  
22. 8T-4136 M [2] BOLT (M10X1.5X25-MM)  
  I   REFER TO HYDRAULIC INFORMATION SYSTEM
  M   METRIC PART
  Y   SEPARATE ILLUSTRATION
 

#SEBP68750191
 

376-0176: CYLINDER & SEAL GP-BLADE

376-0176 CYLINDER & SEAL GP-BLADE
120-MM (4.7-IN) BORE X 157-MM (6.2-IN) STROKE
PART OF 399-8369 UNDERCARRIAGE AR
i04705370 SEBP6875
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Parts for your 308E2 CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 441-7709 JY [1] CYLINDER GP-BLADE  
2. 093-1433 J [4] SEAL-LIP TYPE  
3. 3B-8485 [1] ELBOW  
   
    AVAILABLE REPAIR KIT(S):
  382-5845 J [1] KIT-SEAL (BLADE CYLINDER)  
  J   KIT MARKED J SERVICES PART(S) MARKED J
  Y   SEPARATE ILLUSTRATION
 

#SEBP68750192
 

441-7701: CYLINDER & SEAL GP-BOOM

441-7701 CYLINDER & SEAL GP-BOOM
PART OF 376-0172 CYLINDER & LINES GP-BOOM
AN ATTACHMENT
i05816163 SEBP6875
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Parts for your 308E2 CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 441-7702 Y [1] CYLINDER GP-BOOM  
2. 093-1432 [2] SEAL-LIP TYPE  
3. 382-5771 [2] SEAL-DUST  
4. 3B-8489 [2] FITTING-GREASE (1/8-27 PTF)  
5. 3B-8488 [1] FITTING-GREASE (1/8-27 PTF)  
  Y   SEPARATE ILLUSTRATION
 

#SEBP68750193
 

441-7705: CYLINDER & SEAL GP-BUCKET

441-7705 CYLINDER & SEAL GP-BUCKET
PART OF 376-0174 CYLINDER & LINES GP-BUCKET
AN ATTACHMENT
i05816168 SEBP6875
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Parts for your 308E2 CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 441-7706 Y [1] CYLINDER GP-BUCKET  
2. 093-1432 [2] SEAL-LIP TYPE  
3. 150-5697 [2] SEAL-LIP TYPE  
4. 3B-8489 [2] FITTING-GREASE (1/8-27 PTF)  
  Y   SEPARATE ILLUSTRATION
 

#SEBP68750194
 

441-7710: CYLINDER & SEAL GP-STICK

441-7710 CYLINDER & SEAL GP-STICK
PART OF 421-5337 CYLINDER & LINES GP-STICK
AN ATTACHMENT
i05879729 SEBP6875
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Parts for your 308E2 CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 441-7711 Y [1] CYLINDER GP-STICK  
2. 093-1432 [4] SEAL-LIP TYPE  
3. 3B-8488 [1] FITTING-GREASE (1/8-27 PTF)  
  Y   SEPARATE ILLUSTRATION
 

#SEBP68750195
 

441-7709: CYLINDER GP-BLADE

441-7709 CYLINDER GP-BLADE
120-MM (4.7-IN) BORE X 157-MM (6.2-IN) STROKE
PART OF 376-0176 CYLINDER & SEAL GP-BLADE
i07755730 SEBP6875
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Parts for your 308E2 CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 382-5828 [1] CYLINDER AS-HYDRAULIC  
2. 382-5829 [1] ROD AS  
3. 382-5830 [1] HEAD  
4. 374-3669 [1] SEAL-LIP TYPE  
5. 170-9859 [1] SEAL-U-CUP  
6. 096-1054 [1] RING-BACKUP  
7. 170-9843 [1] SEAL-BUFFER  
8. 382-5835 [1] BUSHING  
9. 095-1717 [1] SEAL-O-RING  
10. 382-5836 [1] RING-BACKUP  
11. 095-1718 [1] SEAL-O-RING  
12. 382-5837 [1] PISTON  
13. 382-5838 [1] SEAL-PISTON  
14. 382-5839 [1] RING  
15. 382-5840 [1] RING  
16. 095-1704 [1] SEAL-O-RING  
17. 382-5841 [2] RING-BACKUP  
18. 382-5762 [1] BALL  
19. 9X-6279 M [1] SETSCREW-SOCKET (M8X1.25-THD)  
20. 218-5205 [2] BUSHING  
  M   METRIC PART
 

#SEBP68750196
 

441-7702: CYLINDER GP-BOOM

441-7702 CYLINDER GP-BOOM
110-MM (4.4-IN) BORE X 971-MM (38.3-IN) STROKE
PART OF 441-7701 CYLINDER & SEAL GP-BOOM
AN ATTACHMENT
i05816664 SEBP6875
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Parts for your 308E2 CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 382-5744 [1] CYLINDER AS-BOOM  
2. 382-5745 [1] ROD AS  
3. 415-3106 [1] HEAD  
4. 374-3667 [1] SEAL-LIP TYPE  
5. 170-9857 [1] SEAL-U-CUP  
6. 093-1519 [1] RING-BACKUP  
7. 170-9841 [1] SEAL-BUFFER  
8. 382-5751 [1] BUSHING  
9. 095-1627 [2] SEAL-O-RING  
10. 415-3107 [2] RING-BACKUP  
11. 095-1716 [1] SEAL-O-RING  
12. 382-5753 [1] PISTON  
13. 415-3108 [1] RING (DUST)  
14. 382-5755 [1] SEAL-PISTON  
15. 382-5756 [1] RING-WEAR  
16. 095-1703 [1] SEAL-O-RING  
17. 382-5758 [2] RING-BACKUP  
18. 9X-6279 M [1] SETSCREW-SOCKET (M8X1.25-THD)  
19. 382-5762 [1] BALL  
20. 382-5763 [1] STOP  
21. 239-7709 [1] BUSHING  
22. 239-7708 [2] BUSHING  
23. 415-3109 [1] RING-BACKUP  
  M   METRIC PART
 

#SEBP68750197
 

441-7706: CYLINDER GP-BUCKET

441-7706 CYLINDER GP-BUCKET
85-MM (3.4-IN) BORE X 742-MM (29.3-IN) STROKE
PART OF 441-7705 CYLINDER & SEAL GP-BUCKET
AN ATTACHMENT
i05816665 SEBP6875
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Parts for your 308E2 CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 382-5804 [1] CYLINDER AS  
2. 382-5805 [1] ROD AS  
3. 382-5806 [1] HEAD  
4. 374-3664 [1] SEAL-LIP TYPE  
5. 167-2306 [1] SEAL-U-CUP  
6. 099-6999 [1] RING-BACKUP  
7. 170-9838 [1] SEAL-BUFFER  
8. 382-5813 [1] BUSHING  
9. 095-1710 [1] SEAL-O-RING  
10. 382-5814 [1] RING-BACKUP  
11. 095-1711 [1] SEAL-O-RING  
12. 382-5815 [1] PISTON  
13. 382-5816 [1] RING-BACKUP  
14. 382-5817 [1] SEAL-PISTON  
15. 382-5818 [1] RING-WEAR  
16. 095-1698 [1] SEAL-O-RING  
17. 382-5819 [2] RING-BACKUP  
18. 9X-6279 M [1] SETSCREW-SOCKET (M8X1.25-THD)  
19. 382-5762 [1] BALL  
20. 239-7710 [1] BUSHING  
21. 296-9446 [1] BUSHING  
22. 161-6149 [1] SEAL-O-RING  
  M   METRIC PART
 

#SEBP68750198
 

361-1139: CYLINDER GP-COUPLER

361-1139 CYLINDER GP-COUPLER
31.8-MM(1.25-IN)BORE X 30-MM(1.2-IN)STROKE
PART OF 361-1153 LOCK GP-QUICK COUPLER
AN ATTACHMENT
i05228078 SEBP6875
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Parts for your 308E2 CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 125-8665 M [1] SCREW-FLAT HEAD (M6X1X16.7-MM)  
2. 361-1127 [1] ROD AS  
3. 361-1128 [1] SEAL  
4. 361-1129 [1] PISTON  
5. 361-1131 [1] KIT-SEAL  
    (INCLUDES PARTS MARKED "J" IN GRAPHIC)
6. 361-1132 [1] VALVE GP-CHECK (HYDRAULIC CONTROL LOCK)  
  112-5282 [1] SEAL-O-RING  
  214-7654 [1] SEAL-O-RING  
  215-3277 [1] SEAL-O-RING  
7. 361-1140 [1] PISTON  
8. 192-7507 [2] SEAL-O-RING  
9. 8C-6430 M [2] SCREW-FLAT HEAD (M6X1X30-MM)  
   
    PARTS SHOWN IN GRAPHIC(S) WITHOUT A REFERENCE NUMBER ARE NOT SERVICED SEPARATELY
  M   METRIC PART
 

#SEBP68750199
 

455-5975: CYLINDER GP-COUPLER

455-5975 CYLINDER GP-COUPLER
31.8-MM (1.3-IN) BORE X 30-MM (1.2-IN) STROKE
PART OF 361-1153, 455-5964 LOCK GP-QUICK COUPLER
AN ATTACHMENT
i05942795 SEBP6875
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Parts for your 308E2 CR MINI HYD EXCAVATOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 361-1127 [1] ROD AS  
2. 361-1128 [1] SEAL  
3. 361-1129 [1] PISTON  
4. 361-1131 [1] KIT-SEAL  
    (INCLUDES O-RINGS & SEALS)
5. 361-1132 Y [1] VALVE GP-CHECK (HYDRAULIC CONTROL LOCK)  
6. 361-1140 [1] PISTON  
7. 216-9060 [1] PLUG  
  Y   SEPARATE ILLUSTRATION
 

Information:

Special Instruction
Instructions for Installation of Oversize Hydraulic Cylinder Seals {7555, 7562}
Instructions for Installation of Oversize Hydraulic Cylinder Seals {7555, 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}
Procedure to Replace the Boom Lowering Control Valve on Certain 308E2 CR Excavators{5051, 5057, 5456, 7562}
Procedure to Replace the Boom Lowering Control Valve on Certain 308E2 CR Excavators{5051, 5057, 5456, 7562}
Procedure to Install 305-6742, 305-6743 Thumb Arrangement {5102, 6068, 6547, 7562}
Procedure to Install 305-6742, 305-6743 Thumb Arrangement {5102, 6068, 6547, 7562}
Procedure to Retrofit a Dual Lock Pin Grabber Quick Coupler with a New Cylinder and Wedge {5133, 6129}
Procedure to Retrofit a Dual Lock Pin Grabber Quick Coupler with a New Cylinder and Wedge {5133, 6129}
Service Letter-NACD
PRODUCT SUPPORT PROGRAM TO REPLACE THE 417-1061 BOOM LOWERING CONTROL VALVE ON CERTAIN 308E2 EXCAVATORS
PRODUCT SUPPORT PROGRAM TO REPLACE THE 417-1061 BOOM LOWERING CONTROL VALVE ON CERTAIN 308E2 EXCAVATORS
PRODUCT SUPPORT PROGRAM FOR REPLACING THE CYLINDER AND WEDGE ON CERTAIN 307E2 AND 308E2 MINI HYDRAULIC EXCAVATORS FACTORY EQUIPPED WITH A HYDRAULIC COUPLER
PRODUCT SUPPORT PROGRAM FOR REPLACING THE CYLINDER AND WEDGE ON CERTAIN 307E2 AND 308E2 MINI HYDRAULIC EXCAVATORS FACTORY EQUIPPED WITH A HYDRAULIC COUPLER
Service Letter-Australia
Service Letter-CFEL
Service Letter-CSARL
PRODUCT SUPPORT PROGRAM TO REPLACE THE 417-1061 BOOM LOWERING CONTROL VALVE ON CERTAIN 308E2 EXCAVATORS
PRODUCT SUPPORT PROGRAM TO REPLACE THE 417-1061 BOOM LOWERING CONTROL VALVE ON CERTAIN 308E2 EXCAVATORS
PRODUCT SUPPORT PROGRAM FOR REPLACING THE CYLINDER AND WEDGE ON CERTAIN 307E2 AND 308E2 MINI HYDRAULIC EXCAVATORS FACTORY EQUIPPED WITH A HYDRAULIC COUPLER
PRODUCT SUPPORT PROGRAM FOR REPLACING THE CYLINDER AND WEDGE ON CERTAIN 307E2 AND 308E2 MINI HYDRAULIC EXCAVATORS FACTORY EQUIPPED WITH A HYDRAULIC COUPLER
Service Letter-Americas
Specifications
Swing Boom Cylinder
308E2 CR Mini Hydraulic Excavator Machine System Specifications
Stick Cylinder
308E2 CR Mini Hydraulic Excavator Machine System Specifications
Bucket Cylinder
308E2 CR Mini Hydraulic Excavator Machine System Specifications
Blade Lift Cylinder
308E2 CR Mini Hydraulic Excavator Machine System Specifications
Boom Cylinder
308E2 CR Mini Hydraulic Excavator Machine System Specifications
Stick Cylinder
308E2 CR Mini Hydraulic Excavator Machine System Specifications
Boom Lines
308E2 CR Mini Hydraulic Excavator Machine System Specifications
Boom Cylinder
308E2 CR Mini Hydraulic Excavator Machine System Specifications
Boom Cylinder
308E2 CR Mini Hydraulic Excavator Machine System Specifications
Tool Operating Manual
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}
Service Letter-China
PRODUCT SUPPORT PROGRAM FOR REPLACING THE CYLINDER AND WEDGE ON CERTAIN 307E2 AND 308E2 MINI HYDRAULIC EXCAVATORS FACTORY EQUIPPED WITH A HYDRAULIC COUPLER
PRODUCT SUPPORT PROGRAM FOR REPLACING THE CYLINDER AND WEDGE ON CERTAIN 307E2 AND 308E2 MINI HYDRAULIC EXCAVATORS FACTORY EQUIPPED WITH A HYDRAULIC COUPLER
Service Letter-Asia
Systems Operation
Blade Hydraulic System
308E2 CR Mini Hydraulic Excavator Hydraulic System
Cylinders (Boom, Stick and Bucket)
308E2 CR Mini Hydraulic 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}
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}
Service Letter-APD
PRODUCT SUPPORT PROGRAM FOR REPLACING THE CYLINDER AND WEDGE ON CERTAIN 307E2 AND 308E2 MINI HYDRAULIC EXCAVATORS FACTORY EQUIPPED WITH A HYDRAULIC COUPLER
PRODUCT SUPPORT PROGRAM FOR REPLACING THE CYLINDER AND WEDGE ON CERTAIN 307E2 AND 308E2 MINI HYDRAULIC EXCAVATORS FACTORY EQUIPPED WITH A HYDRAULIC COUPLER
Testing and Adjusting
Cylinder Drift - Check
308E2 CR Mini Hydraulic Excavator Hydraulic System
Cylinder Speed - Check
308E2 CR Mini Hydraulic Excavator Hydraulic System
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
Bucket Cylinder - Remove and Install
308E2 CR Mini Hydraulic Excavator Machine Systems
Blade Cylinder - Remove and Install
308E2 CR Mini Hydraulic Excavator Machine Systems
Bucket Cylinder - Remove and Install
308E2 CR Mini Hydraulic Excavator Machine Systems
Stick Cylinder - Remove and Install
308E2 CR Mini Hydraulic Excavator Machine Systems
Boom Cylinder - Remove and Install
308E2 CR Mini Hydraulic Excavator Machine Systems
Swing Boom Cylinder - Remove and Install
308E2 CR Mini Hydraulic Excavator Machine Systems
Service Magazine
Compatible Puller Stud and Hydraulic Cylinder Capacity Chart {0599, 7000, 7562}
Compatible Puller Stud and Hydraulic Cylinder Capacity Chart {0599, 7000, 7562}
Improved Boom Cylinder Now Used on 308E2 CR Hydraulic Excavators {5057, 5458}
Improved Boom Cylinder Now Used on 308E2 CR Hydraulic Excavators {5057, 5458}

Caterpillar Parts SIS Catalog 308E2 CR :

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