225-4521 CYLINDER & LINES GP-BOOM -RH S/N FPC1-UP PART OF 220-2488 BOOM AR-REACH AN ATTACHMENT 345C L

HYDRAULIC SYSTEM

CYLINDER GP

0. 225-4521 CYLINDER &
1. 225-4527 CYLINDER &
2. 225-4524 CYLINDER &
3. 225-4522 CYLINDER &
4. 225-4522 CYLINDER &
5. 225-4528 CYLINDER &
6. 225-4533 CYLINDER &
7. 225-4525 CYLINDER &
8. 225-4525 CYLINDER &
9. 225-4523 CYLINDER G
0. INFORMATION

EXCAVATOR 345C L EXCAVATOR FPC
345C L Hydraulic Excavator FPC00001-UP (MACHINE) POWERED BY C13 Engine SEBP4506 345C L FPC (2005)

HYDRAULIC SYSTEM

CYLINDER GP

225-4520 CYLINDER & LINES GP-BOOM

225-4521 CYLINDER & LINES GP-BOOM

225-4527 CYLINDER & LINES GP-BUCKET

225-4524 CYLINDER & LINES GP-STICK

225-4522 CYLINDER & SEAL GP-BOOM

#SEBP45060370

225-4521: CYLINDER & LINES GP-BOOM

CYLINDER & LINES GP-BOOM

225-4521 CYLINDER & LINES GP-BOOM -RH
S/N FPC1-UP
PART OF 220-2488 BOOM AR-REACH
AN ATTACHMENT

i02169324 SEBP4506

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Parts for your 345C L EXCAVATOR:

CATERPILLAR SIS

Part No	Qty	Parts name
225-4522 Y	[1]	CYLINDER & SEAL GP-BOOM
245-4933 Y	[1]	LINES GP-BOOM CYLINDER (RH)
Y		SEPARATE ILLUSTRATION

#SEBP45060371

225-4527: CYLINDER & LINES GP-BUCKET

CYLINDER & LINES GP-BUCKET

225-4527 CYLINDER & LINES GP-BUCKET -TB-FAMILY
S/N FPC1-UP
PART OF 245-5584 LINKAGE AR-BUCKET
AN ATTACHMENT

i02169651 SEBP4506

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Parts for your 345C L EXCAVATOR:

CATERPILLAR SIS

Part No	Qty	Parts name
225-4528 Y	[1]	CYLINDER & SEAL GP-BUCKET
115-8694 Y	[1]	LINES GP-BUCKET CYLINDER
Y		SEPARATE ILLUSTRATION

#SEBP45060372

225-4524: CYLINDER & LINES GP-STICK

CYLINDER & LINES GP-STICK

225-4524 CYLINDER & LINES GP-STICK
S/N FPC1-UP
PART OF 220-2488 BOOM AR-REACH
AN ATTACHMENT

i02169336 SEBP4506

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Parts for your 345C L EXCAVATOR:

CATERPILLAR SIS

Part No	Qty	Parts name
225-4525 Y	[1]	CYLINDER & SEAL GP-STICK
129-5973 Y	[1]	LINES GP-STICK CYLINDER
Y		SEPARATE ILLUSTRATION

#SEBP45060373

225-4522: CYLINDER & SEAL GP-BOOM

CYLINDER & SEAL GP-BOOM

225-4522 CYLINDER & SEAL GP-BOOM
S/N FPC1-UP
PART OF 225-4520, 225-4521 CYLINDER & LINES GP-BOOM
Type 1
AN ATTACHMENT

i02174628 SEBP4506

2254522 CYLINDER & SEAL GP-BOOM Parts scheme

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Parts for your 345C L EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3B-8489	[1]	FITTING-GREASE (1/8-27 PTF)
2.	9X-4598	[4]	SEAL-LIP TYPE
3.	225-4523 Y	[1]	CYLINDER GP-BOOM
4.	8T-6757	[1]	PLUG-PIPE
	Y		SEPARATE ILLUSTRATION

#SEBP45060374

225-4522: CYLINDER & SEAL GP-BOOM

CYLINDER & SEAL GP-BOOM

225-4522 CYLINDER & SEAL GP-BOOM
S/N FPC1-UP
PART OF 225-4520, 225-4521 CYLINDER & LINES GP-BOOM
Type 2
AN ATTACHMENT

i05193531 SEBP4506

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Parts for your 345C L EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3B-8489	[1]	FITTING-GREASE (1/8-27 PTF)
2.	9X-4598	[4]	SEAL-LIP TYPE
3.	389-1041 CY	[1]	CYLINDER GP-BOOM
4.	8T-6757	[1]	PLUG-PIPE
	C		CHANGE FROM PREVIOUS TYPE
	Y		SEPARATE ILLUSTRATION

#SEBP45060375

225-4528: CYLINDER & SEAL GP-BUCKET

CYLINDER & SEAL GP-BUCKET

225-4528 CYLINDER & SEAL GP-BUCKET
S/N FPC1-UP
PART OF 225-4527 CYLINDER & LINES GP-BUCKET
AN ATTACHMENT

i02169681 SEBP4506

2254528 CYLINDER & SEAL GP-BUCKET Parts scheme

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Parts for your 345C L EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3B-8489	[2]	FITTING-GREASE (1/8-27 PTF)
2.	7X-4803	[2]	SEAL-LIP TYPE
3.	225-4529 Y	[1]	CYLINDER GP-BUCKET
4.	9X-4597	[2]	SEAL-LIP TYPE
	Y		SEPARATE ILLUSTRATION

#SEBP45060376

225-4533: CYLINDER & SEAL GP-CTWT

CYLINDER & SEAL GP-CTWT

225-4533 CYLINDER & SEAL GP-CTWT
S/N FPC1-UP
PART OF 286-0160 COUNTERWEIGHT AR
AN ATTACHMENT

i02657270 SEBP4506

2254533 CYLINDER & SEAL GP-CTWT Parts scheme

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Parts for your 345C L EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	093-1434	[4]	SEAL-LIP TYPE
2.	236-9769 Y	[1]	CYLINDER GP-COUNTERWEIGHT
3.	3B-8489	[2]	FITTING-GREASE (1/8-27 PTF)
	Y		SEPARATE ILLUSTRATION

#SEBP45060377

225-4525: CYLINDER & SEAL GP-STICK

CYLINDER & SEAL GP-STICK

225-4525 CYLINDER & SEAL GP-STICK
S/N FPC1-UP
PART OF 225-4524 CYLINDER & LINES GP-STICK
Type 1
AN ATTACHMENT

i02174942 SEBP4506

2254525 CYLINDER & SEAL GP-STICK Parts scheme

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Parts for your 345C L EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	225-4526 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

#SEBP45060378

225-4525: CYLINDER & SEAL GP-STICK

CYLINDER & SEAL GP-STICK

225-4525 CYLINDER & SEAL GP-STICK
S/N FPC1-UP
PART OF 225-4524 CYLINDER & LINES GP-STICK
Type 2
AN ATTACHMENT

i05319301 SEBP4506

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Parts for your 345C L EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	370-6692 CY	[1]	CYLINDER GP-STICK
2.	9X-4597	[4]	SEAL-LIP TYPE
3.	3B-8489	[1]	FITTING-GREASE (1/8-27 PTF)
	C		CHANGE FROM PREVIOUS TYPE
	Y		SEPARATE ILLUSTRATION

#SEBP45060379

225-4523: CYLINDER GP-BOOM

CYLINDER GP-BOOM

225-4523 CYLINDER GP-BOOM
S/N FPC1-UP
160-MM (6.3-IN) BORE X 1575-MM (62-IN) STROKE
PART OF 225-4522 CYLINDER & SEAL GP-BOOM
AN ATTACHMENT

i02174660 SEBP4506

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Parts for your 345C L EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9X-3604 J	[1]	SEAL AS
2.	123-2112 M	[1]	LOCKNUT-SPECIAL (M90X2-THD)
3.	126-2084	[1]	STOP
4.	191-3128 J	[1]	RING-SEAL
5.	225-4617	[1]	CYLINDER AS
5A.	228-5620	[1]	BUSHING
6.	234-4463	[1]	ROD AS
6A.	235-7527	[1]	BUSHING
7.	7Y-4941 J	[1]	RING-BACKUP
8.	7Y-4944	[1]	RING-RETAINING
9.	358-8528	[1]	HEAD
10.	333-8687 J	[1]	SEAL-BUFFER
11.	165-9291 J	[1]	SEAL-LIP TYPE
12.	185-0230 J	[2]	RING
13.	185-0231 J	[1]	RING
14.	185-0232	[1]	PISTON
15.	087-5550 J	[1]	RING-BACKUP
16.	095-1635 J	[1]	SEAL-O-RING
17.	114-0762	[1]	BUSHING
18.	333-8688 J	[1]	SEAL-U-CUP
19.	7Y-5239 M	[8]	BOLT-SOCKET HEAD (M24X3X100-MM)

			AVAILABLE REPAIR KIT(S):
	376-4336 J	[1]	KIT-SEAL (CYLINDER)(BOOM CYLINDER)
	J		KIT MARKED J INCLUDES PART(S) MARKED J
	M		METRIC PART
	R		REMANUFACTURED PART MAY BE AVAILABLE

Information:

HYDRAULIC SYSTEM

CYLINDER GP

Special Instruction

Instructions for Installation of Oversize Hydraulic Cylinder Seals {7555, 7562}
Instructions for Installation of Oversize Hydraulic Cylinder Seals {7555, 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}

Inspection Procedure for Boom Cylinder Assembly Cracks on Certain 330B, 330C, 345B, 345C, and 345D Excavators {5456, 7562}
Inspection Procedure for Boom Cylinder Assembly Cracks on Certain 330B, 330C, 345B, 345C, and 345D Excavators {5456, 7562}

Service Letter-NACD

PRODUCT SUPPORT PROGRAM FOR REWORKING THE STICK CYLINDER ON CERTAIN 345B, 345C, 365C L MH, AND 385C L MH EXCAVATORS
PRODUCT SUPPORT PROGRAM FOR REWORKING THE STICK CYLINDER ON CERTAIN 345B, 345C, 365C L MH, AND 385C L MH EXCAVATORS

PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK
PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK

PRODUCT SUPPORT PROGRAM FOR REPLACING THE STICK CYLINDER ASSEMBLY ON CERTAIN 345C, 345D, 349D, AND 349E EXCAVATORS
PRODUCT SUPPORT PROGRAM FOR REPLACING THE STICK CYLINDER ASSEMBLY ON CERTAIN 345C, 345D, 349D, AND 349E EXCAVATORS

Service Letter-Australia

PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK
PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK

Service Letter-CFEL

PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK
PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK

Service Letter-CSARL

PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK
PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK

Service Letter-Americas

PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK
PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK

Technical Information Bulletin

The Failure of the Buffer Seal that can be Caused by a Defect in the Seal Groove on All Track-Type Tractors, Wheel Loaders, Hydraulic Excavators and Backhoe Loaders that Use Cylinders that were Manufactured After 1January 2000{7562}
The Failure of the Buffer Seal that can be Caused by a Defect in the Seal Groove on All Track-Type Tractors, Wheel Loaders, Hydraulic Excavators and Backhoe Loaders that Use Cylinders that were Manufactured After 1January 2000{7562}

Discoloration of the Hydraulic Cylinder Rod on Certain Excavators{5102, 5456, 5457, 5458, 5468, 7562}
Discoloration of the Hydraulic Cylinder Rod on Certain Excavators{5102, 5456, 5457, 5458, 5468, 7562}

Verification of the Cylinder Drift for the Bucket Cylinder on Certain Excavators{5457}
Verification of the Cylinder Drift for the Bucket Cylinder on Certain Excavators{5457}

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}

Low Cycle Cylinder Rod Breaks on Certain Excavators and Mobile Hydraulic Power Units{7562}
Low Cycle Cylinder Rod Breaks on Certain Excavators and Mobile Hydraulic Power Units{7562}

Specifications

Boom Cylinder Lines - Left Hand
345C Excavator Machine System Specifications

Boom Cylinder Lines - Right Hand
345C Excavator Machine System Specifications

Boom Cylinder
345C Excavator Machine System Specifications

Boom Cylinder Lines
345C Excavator Machine System Specifications

Boom Lines
345C Excavator Machine System Specifications

Stick Cylinder
345C Excavator Machine System Specifications

Bucket Cylinder
345C Excavator 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}

Service Letter-China

PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK
PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK

Service Letter-Asia

PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK
PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK

Systems Operation

Cylinders (Boom, Stick and Bucket)
345C 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}

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}

Service Letter-APD

PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK
PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK

Testing and Adjusting

Cylinder Speed - Check
345C Excavator Hydraulic System

Cylinder Drift - Check - Empty Bucket
345C Excavator Hydraulic System

Cylinder Drift - Check - Loaded Bucket
345C Excavator Hydraulic System

Relief Valve (Counterweight Cylinder) - Test and Adjust
345C Excavator Hydraulic System

Bench Test Procedures

Disassembly and Assembly

Boom Cylinder - Remove and Install
345C Excavator and 345C MHPU
Mobile Hydraulic Power Unit Machine Systems

Counterweight Cylinder - Remove and Install
345C Excavator and 345C MHPU
Mobile Hydraulic Power Unit Machine Systems

Stick Cylinder - Remove and Install
345C Excavator and 345C MHPU
Mobile Hydraulic Power Unit Machine Systems

Bucket Cylinder - Remove and Install
345C Excavator and 345C MHPU
Mobile Hydraulic Power Unit Machine Systems

Service Magazine

Procedure Now Available to Test the Position Sensor of a Hydraulic Cylinder {1439, 7562}
2012/10/04

New Hydraulic Cylinders for the Stick Improve the Reliability {5458}
2010/01/11

Compatible Puller Stud and Hydraulic Cylinder Capacity Chart {0599, 7000, 7562}
2011/10/17

Correct Ring Orientation Provides Smooth Hydraulic Cylinder Operation {5456, 5458}
2009/03/16

A Rework Procedure Improves the Seal Assembly Performance in Hydraulic Cylinders on Cat Products {7562}
2010/04/30

Service Limit of the Bushings At the Front Linkages Are Now Available on Certain Excavators {5456, 5457, 5458, 6060, 6301, 6302, 6460, 6501, 6502, 6516, 6521, 6535, 6536}
2010/10/12

Improved Seal Kits are Now Used on Certain Excavators {5456, 5457, 5458}
2011/11/18

Improvements to the Manufacturing Process of the Stick Cylinder Assembly have been Made and are Now Used on Certain Excavators {5458}
2015/03/31

A Procedure to Inspect the Boom Cylinder Assembly is Available for Certain Excavators and Mobile Hydraulic Power Units {5456}
A Procedure to Inspect the Boom Cylinder Assembly is Available for Certain Excavators and Mobile Hydraulic Power Units {5456}

Caterpillar Parts SIS Catalog 345C L :

225-4520 CYLINDER & LINES GP-BOOM

266-6214 COUPLING GP-PUMP

324-4184 COUPLING GP-FLEXIBLE

177-2617 BLOCK GP-HYDRAULIC

209-5982 ACTUATOR GP

5I-8416 ACCUMULATOR GP-HYDRAULIC

4I-1536 ACCUMULATOR GP-HYDRAULIC

227-8807 ACCUMULATOR GP-HYDRAULIC

225-4527 CYLINDER & LINES GP-BUCKET

225-4524 CYLINDER & LINES GP-STICK

225-4522 CYLINDER & SEAL GP-BOOM

225-4528 CYLINDER & SEAL GP-BUCKET

225-4533 CYLINDER & SEAL GP-CTWT

225-4525 CYLINDER & SEAL GP-STICK

Truck sale:

Caterpillar 345C L
- Crawler Excavators
OHIO CAT

79,900

Caterpillar 345CL P, Crawler Excavators, Construction
- Crawler Excavators
MICHIGAN CAT

55,560

Caterpillar 345CL, Crawler Excavators, Construction

80,000

Caterpillar 345CL, Crawler Excavators, Construction

WAGNER EQUIPMENT CO

Caterpillar 345CL

ZIEGLER CAT