206-3630 CYLINDER GP-BOOM S/N BLN10300-UP 120.7-MM (4.75-IN) BORE X 1000-MM (39.37-IN) STROKE PART OF 214-6982 HYDRAULIC AR 420D

HYDRAULIC SYSTEM

CYLINDER GP

0. 206-3630 CYLINDER G
1. 178-3713 CYLINDER G
2. 155-6586 CYLINDER G
3. 191-7725 CYLINDER G
4. 228-3505 CYLINDER G
5. 185-1839 CYLINDER G
6. 206-0520 CYLINDER G
7. 206-0522 CYLINDER G
8. 228-3499 CYLINDER G
9. 228-3500 CYLINDER G
0. INFORMATION

BACKHOE LOADER 420D BACKHOE LOADER BLN
420D Backhoe Loader BLN10300-UP (MACHINE) POWERED BY 3054C Engine SEBP3995 420D BLN (1999)

HYDRAULIC SYSTEM

CYLINDER GP

191-7835 CYLINDER GP-BACKHOE BUCKET

191-7839 CYLINDER GP-BACKHOE BUCKET

206-3630 CYLINDER GP-BOOM

178-3713 CYLINDER GP-COUPLER

155-6586 CYLINDER GP-EXTENDABLE STICK

191-7725 CYLINDER GP-EXTENDABLE STICK

#SEBP39950380

206-3630: CYLINDER GP-BOOM

CYLINDER GP-BOOM

206-3630 CYLINDER GP-BOOM
S/N BLN10300-UP
120.7-MM (4.75-IN) BORE X 1000-MM (39.37-IN) STROKE
PART OF 214-6982 HYDRAULIC AR

i01564069 SEBP3995

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Parts for your 420D BACKHOE LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	206-3629	[1]	CYLINDER AS
1A.	6V-9746	[1]	SEAL-O-RING
1B.	9R-0139	[2]	BUSHING
2.	170-9066	[1]	BOLT (1-1/2-12X4-IN)
3.	3S-6162	[1]	WASHER-HARD (40.5X67X6-MM THK)
4.	8T-8390 J	[1]	RING-WEAR
5.	4T-8588 J	[1]	SEAL AS
6.	9X-7260 J	[1]	RING-WEAR
7.	167-2202 J	[1]	SEAL AS-BUFFER
8.	167-2310 J	[1]	SEAL-U-CUP
9.	191-6558	[1]	HEAD
10.	231-3540 J	[1]	SEAL-WIPER
11.	175-7903 J	[1]	SEAL-O-RING
12.	2J-3961 J	[1]	RING-BACKUP
13.	159-5848	[1]	ROD AS
13A.	9R-0139	[2]	BUSHING
14.	154-8051	[1]	PISTON
15.	9T-5444	[1]	PLUNGER
16.	6L-6208	[1]	SPRING
17.	175-7902 J	[1]	SEAL-O-RING

			AVAILABLE REPAIR KIT(S):
	235-0973 J	[1]	KIT-SEAL (HYDRAULIC CYLINDER)
	J		KIT MARKED J SERVICES PART(S) MARKED J
	R		REMANUFACTURED PART MAY BE AVAILABLE

#SEBP39950381

178-3713: CYLINDER GP-COUPLER

CYLINDER GP-COUPLER

178-3713 CYLINDER GP-COUPLER
S/N BLN10300-UP
50.8-MM (2-IN) BORE X 80.5-MM (3.17-IN) STROKE
PART OF 122-6404 CYLINDER & MTG GP-COUPLER
ALSO AN ATTACHMENT

i01438120 SEBP3995

1783713 CYLINDER GP-COUPLER Parts scheme

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Parts for your 420D BACKHOE LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	178-3893	[2]	ROD

			AVAILABLE REPAIR KIT(S):
	180-9872	[1]	KIT-SEAL (COUPLER CYLINDER)
			(INCLUDES LOCKNUTS, TEFLON PISTON SEALS, PISTON O-RINGS, O-RING SEALS, BACKUP RINGS,
			SQUARE WIRE RETAINERS, WIPER SEAL, INSTALLATION RING & U-CUP SEALS)

#SEBP39950382

155-6586: CYLINDER GP-EXTENDABLE STICK

CYLINDER GP-EXTENDABLE STICK

155-6586 CYLINDER GP-EXTENDABLE STICK
S/N BLN10300-UP
76.2-MM (3-IN) BORE X 1067-MM (42.01-IN) STROKE
PART OF 184-6786 STICK GP-EXTENDABLE
AN ATTACHMENT

i01658016 SEBP3995

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Parts for your 420D BACKHOE LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
191-7725 Y	[1]	CYLINDER GP-EXTENDABLE STICK
		S/N BLN10300-UP
162-2351 Y	[1]	LINES GP-EXTENDABLE STICK
Y		SEPARATE ILLUSTRATION

#SEBP39950383

191-7725: CYLINDER GP-EXTENDABLE STICK

CYLINDER GP-EXTENDABLE STICK

191-7725 CYLINDER GP-EXTENDABLE STICK
S/N BLN10300-UP
76.2-MM (3-IN) BORE X 1067-MM (42.01-IN) STROKE
PART OF 155-6586 CYLINDER GP-EXTENDABLE STICK
AN ATTACHMENT

i01586761 SEBP3995

1917725 CYLINDER GP-EXTENDABLE STICK Parts scheme

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Parts for your 420D BACKHOE LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9T-2212	[1]	PISTON
2.	164-7176	[1]	ROD AS
3.	191-7727	[1]	CYLINDER AS
	6V-8398	[1]	SEAL-O-RING
4.	167-2186	[1]	SEAL AS-BUFFER
5.	167-2294	[1]	SEAL-U-CUP
6.	226-8202	[1]	SEAL-WIPER
7.	173-9779 M	[1]	BOLT (M24X3X80-MM)
8.	175-7896	[1]	SEAL-O-RING
9.	191-6159	[1]	HEAD
10.	4T-6780	[1]	RING-WEAR
11.	5H-8848	[1]	SEAL-O-RING
12.	6J-1972	[1]	SEAL AS
13.	6J-5731	[1]	RING-BACKUP
14.	6J-5733	[1]	RING-WEAR
15.	6V-8237	[1]	WASHER (26X44X4-MM THK)
	M		METRIC PART

#SEBP39950384

228-3505: CYLINDER GP-LIFT

CYLINDER GP-LIFT

228-3505 CYLINDER GP-LIFT
S/N BLN10300-UP
85-MM (3.35-IN) BORE X 705-MM (27.76-IN) STROKE
PART OF 214-6982 HYDRAULIC AR

i02010159 SEBP3995

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Parts for your 420D BACKHOE LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	161-7149 J	[1]	SEAL-PISTON
2.	233-2573	[1]	ROD AS
3.	233-2579	[1]	PISTON
4.	233-2606 J	[1]	SEAL-WIPER
5.	233-2610 J	[1]	SEAL-U-CUP
6.	233-2621	[1]	CYLINDER AS
7.	244-3837	[1]	HEAD AS
	233-2613	[1]	BEARING
8.	244-3838 J	[1]	RING-BACKUP
9.	334-6912 J	[1]	RING-WEAR
10.	107-6279 J	[1]	SEAL-O-RING
11.	3B-8489	[2]	FITTING-GREASE (1/8-27 PTF)
12.	3E-6732 J	[1]	SEAL-O-RING
13.	9R-0153	[2]	BUSHING
14.	9R-0321	[2]	BUSHING
15.	9X-6611 JM	[1]	SETSCREW-SOCKET (M10X1.5X16-MM)

			AVAILABLE REPAIR KIT(S):
	243-2276 J	[1]	KIT-SEAL (LIFT CYLINDER)
	J		KIT MARKED J SERVICES PART(S) MARKED J
	M		METRIC PART

#SEBP39950385

185-1839: CYLINDER GP-MULTIPURPOSE BUKT

CYLINDER GP-MULTIPURPOSE BUKT

185-1839 CYLINDER GP-MULTIPURPOSE BUKT
S/N BLN10300-UP
76.2-MM (3-IN) BORE X 260-MM (10.24-IN) STROKE
PART OF 185-6705, 185-6706 BUCKET AR-MULTIPURPOSE
AN ATTACHMENT

i01422255 SEBP3995

1851839 CYLINDER GP-MULTIPURPOSE BUKT Parts scheme

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Parts for your 420D BACKHOE LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	6E-0122	[1]	HEAD
2.	9T-2212	[1]	PISTON
3.	9T-4008	[1]	ROD AS
3A.	9T-4007	[2]	BEARING
4.	9T-4009	[1]	CYLINDER AS
5.	167-2186 J	[1]	SEAL AS-BUFFER
6.	167-2294 J	[1]	SEAL-U-CUP
7.	1H-7339 J	[1]	SEAL-O-RING
8.	226-8202 J	[1]	SEAL-WIPER
9.	4T-6780 J	[1]	RING-WEAR
10.	5P-8250	[1]	WASHER (28X49X5-MM THK)
11.	6F-7037	[1]	BOLT (1-14X3.25-IN)
12.	6J-1972 J	[1]	SEAL AS
13.	6J-5733 J	[1]	RING-WEAR
14.	8J-2574 J	[1]	RING-BACKUP

			AVAILABLE REPAIR KIT(S):
	235-0354 J	[1]	KIT-SEAL (HYDRAULIC CYLINDER)
	J		KIT MARKED J SERVICES PART(S) MARKED J
	R		REMANUFACTURED PART MAY BE AVAILABLE

#SEBP39950386

206-0520: CYLINDER GP-STABILIZER

CYLINDER GP-STABILIZER

206-0520 CYLINDER GP-STABILIZER -LH
S/N BLN10300-11017
101.6-MM (4-IN) BORE X 541-MM (21.3-IN) STROKE
PART OF 214-6982 HYDRAULIC AR

i01563334 SEBP3995

2060520 CYLINDER GP-STABILIZER Parts scheme

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Parts for your 420D BACKHOE LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	189-5629	[1]	HEAD
2.	206-0519	[1]	CYLINDER AS
2A.	9R-0321	[2]	BUSHING
	6V-8398	[1]	SEAL-O-RING
3.	167-2197 J	[1]	SEAL AS-BUFFER
4.	167-2305 J	[1]	SEAL-U-CUP
5.	227-1145 J	[1]	SEAL-WIPER
6.	172-2353	[1]	PISTON
7.	172-2354	[1]	ROD AS
7A.	9R-0321	[2]	BUSHING
8.	2K-6830 J	[1]	RING-BACKUP
9.	3S-7023	[1]	WASHER (34X57X6-MM THK)
10.	4T-6128 J	[1]	RING
11.	5J-5402 J	[1]	SEAL AS
12.	6J-2797 J	[1]	RING-WEAR
13.	7F-6112	[1]	BOLT (1-1/4-12X3-IN)
14.	8H-7521 J	[1]	SEAL-O-RING
15.	9X-4611 J	[1]	SEAL-O-RING

			AVAILABLE REPAIR KIT(S):
	285-7486 J		KIT-SEAL (STABILIZER CYLINDER)
	J		KIT MARKED J SERVICES PART(S) MARKED J

#SEBP39950387

206-0522: CYLINDER GP-STABILIZER

CYLINDER GP-STABILIZER

206-0522 CYLINDER GP-STABILIZER -RH
S/N BLN10300-11017
101.6-MM (4-IN) BORE X 541-MM (21.3-IN) STROKE
PART OF 214-6982 HYDRAULIC AR

i01563351 SEBP3995

2060522 CYLINDER GP-STABILIZER Parts scheme

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Parts for your 420D BACKHOE LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	189-5629	[1]	HEAD
2.	206-0521	[1]	CYLINDER AS
2A.	9R-0321	[2]	BUSHING
2B.	6V-8398	[1]	SEAL-O-RING
3.	167-2197	[1]	SEAL AS-BUFFER
4.	167-2305	[1]	SEAL-U-CUP
5.	227-1145	[1]	SEAL-WIPER
6.	172-2353	[1]	PISTON
7.	172-2354	[1]	ROD AS
7A.	9R-0321	[2]	BUSHING
8.	2K-6830	[1]	RING-BACKUP
9.	3S-7023	[1]	WASHER (34X57X6-MM THK)
10.	4T-6128	[1]	RING
11.	5J-5402	[1]	SEAL AS
12.	6J-2797	[1]	RING-WEAR
13.	7F-6112	[1]	BOLT (1-1/4-12X3-IN)
14.	8H-7521	[1]	SEAL-O-RING
15.	9X-4611	[1]	SEAL-O-RING

#SEBP39950388

228-3499: CYLINDER GP-STABILIZER

CYLINDER GP-STABILIZER

228-3499 CYLINDER GP-STABILIZER -LH
S/N BLN11018-UP
100-MM (3.9-IN) BORE X 541-MM (21.3-IN) STROKE
PART OF 214-6982 HYDRAULIC AR

i02096839 SEBP3995

2283499 CYLINDER GP-STABILIZER Parts scheme

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Parts for your 420D BACKHOE LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	233-2576	[1]	ROD AS
2.	233-2582	[1]	PISTON
3.	233-2585 J	[1]	SEAL AS
4.	233-2588 J	[1]	RING-WEAR
5.	233-2594	[1]	HEAD AS
5A.	233-2614	[1]	BEARING
6.	233-2603 J	[1]	SEAL-O-RING
7.	233-2607 J	[1]	SEAL AS
8.	233-2611 J	[1]	SEAL-U-CUP
10.	233-2615 J	[1]	SEAL
11.	233-2624	[1]	CYLINDER AS
12.	3B-8489	[2]	FITTING-GREASE (1/8-27 PTF)
13.	3E-6735 J	[1]	SEAL-O-RING
14.	4J-0526 J	[1]	SEAL-O-RING
15.	244-8826 J	[1]	RING-BACKUP
16.	9R-0321	[4]	BUSHING
17.	9X-6611 JM	[1]	SETSCREW-SOCKET (M10X1.5X16-MM)

			AVAILABLE REPAIR KIT(S):
	233-2623 J	[1]	KIT-SEAL (STABILIZER CYLINDER)
	J		KIT MARKED J SERVICES PART(S) MARKED J
	M		METRIC PART

#SEBP39950389

228-3500: CYLINDER GP-STABILIZER

CYLINDER GP-STABILIZER

228-3500 CYLINDER GP-STABILIZER -RH
S/N BLN11018-UP
100-MM (3.9-IN) BORE X 541-MM (21.3-IN) STROKE
PART OF 214-6982 HYDRAULIC AR

i02096840 SEBP3995

2283500 CYLINDER GP-STABILIZER Parts scheme

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Parts for your 420D BACKHOE LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	233-2576	[1]	ROD AS
2.	233-2582	[1]	PISTON
3.	233-2585 J	[1]	SEAL AS
4.	233-2588 J	[1]	RING-WEAR
5.	233-2594	[1]	HEAD AS
	233-2614	[1]	BEARING
6.	233-2603 J	[1]	SEAL-O-RING
7.	233-2607 J	[1]	SEAL AS
8.	233-2611 J	[1]	SEAL-U-CUP
10.	233-2615 J	[1]	SEAL
11.	233-2625	[1]	CYLINDER AS
12.	3B-8489	[2]	FITTING-GREASE (1/8-27 PTF)
13.	3E-6735 J	[1]	SEAL-O-RING
14.	4J-0526 J	[1]	SEAL-O-RING
15.	244-8826 J	[1]	RING-BACKUP
16.	9R-0321	[4]	BUSHING
17.	9X-6611 JM	[1]	SETSCREW-SOCKET (M10X1.5X16-MM)

			AVAILABLE REPAIR KIT(S):
	233-2623 J	[1]	KIT-SEAL (STABILIZER CYLINDER)
	J		KIT MARKED J SERVICES PART(S) MARKED J
	M		METRIC PART

Information:

HYDRAULIC SYSTEM

CYLINDER GP

Operation and Maintenance Manual

Loader Bucket, Cylinder, and Linkage Bearings - Lubricate
416D, 420D, 424D, 428D, 430D, 432D and 442D Backhoe Loaders

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}

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}

Service Letter-NACD

PRODUCT SUPPORT PROGRAM FOR INSTALLING NEW HYDRAULIC STICK CYLINDER WIPER SEALS ON CERTAIN 416D, 420D, 424D, 428D, 432D, 438D, AND 442D BACKHOE LOADERS
PRODUCT SUPPORT PROGRAM FOR INSTALLING NEW HYDRAULIC STICK CYLINDER WIPER SEALS ON CERTAIN 416D, 420D, 424D, 428D, 432D, 438D, AND 442D BACKHOE LOADERS

PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE SWING CYLINDER ROD EYE PINS ON CERTAIN 416D, 420D AND 430D BACKHOE LOADERS
PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE SWING CYLINDER ROD EYE PINS ON CERTAIN 416D, 420D AND 430D BACKHOE LOADERS

Service Letter-Australia

Service Letter-CFEL

Service Letter-CSARL

Service Letter-Americas

Technical Information Bulletin

THE HEAD OF THE STICK CYLINDER MAY LOOSEN
THE HEAD OF THE STICK CYLINDER MAY LOOSEN

Paint on Cylinder Rods Can Cause seal Failure on Certain Backhoe Loaders, Integrated Toolcarriers, and Wheel Loaders
Paint on Cylinder Rods Can Cause seal Failure on Certain Backhoe Loaders, Integrated Toolcarriers, and Wheel Loaders

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}

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}

The Wear Ring in the Lift Cylinder for the Backhoe Loader Will Be Serviced by the Seal Kit{5102, 7555, 7562}
The Wear Ring in the Lift Cylinder for the Backhoe Loader Will Be Serviced by the Seal Kit{5102, 7555, 7562}

Warranty Information Changes for Cylinder Rod of the Swing on the Backhoe Loader{5105}
Warranty Information Changes for Cylinder Rod of the Swing on the Backhoe Loader{5105}

Specifications

Lift Cylinder
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Hydraulic and Steering System

Boom Cylinder
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Hydraulic and Steering System

Lift Cylinder
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Hydraulic and Steering System

Tilt Cylinder
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Hydraulic and Steering System

Stabilizer Cylinder
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Hydraulic and Steering System

Boom Cylinder
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Hydraulic and Steering System

Swing Cylinder
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Hydraulic and Steering System

Bucket Cylinder (Backhoe)
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Hydraulic and Steering System

Stick Cylinder
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Hydraulic and Steering System

Extendable Stick Cylinder
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Hydraulic and Steering System

Bucket Cylinder (Extendable Stick)
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Hydraulic and Steering System

Swing Cylinder
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Hydraulic and Steering System

Stick Cylinder
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Hydraulic and Steering System

Stabilizer Cylinder
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Hydraulic and Steering System

Multipurpose Bucket Cylinder
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Hydraulic and Steering System

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

Service Letter-Asia

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

Bench Test Procedures

Disassembly and Assembly

Coupler Cylinder - Disassemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Coupler Cylinder - Assemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Coupler Cylinder - Remove
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Coupler Cylinder - Install
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Lift Cylinder - Disassemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Lift Cylinder - Assemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Lift Cylinder - Remove
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Lift Cylinder - Install
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Tilt Cylinder - Remove
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Tilt Cylinder - Install
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Tilt Cylinder - Disassemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Tilt Cylinder - Assemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Stabilizer Cylinder - Remove
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Stabilizer Cylinder - Install
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Backhoe Bucket Cylinder - Remove
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Backhoe Bucket Cylinder - Install
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Stick Cylinder - Remove
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Stick Cylinder - Disassemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Stick - Remove and Install
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Stick Cylinder - Assemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Stick Cylinder - Install
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Extendable Stick Cylinder - Disassemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Backhoe Bucket Cylinder - Disassemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Backhoe Bucket Cylinder - Assemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Extendable Stick Cylinder - Assemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Boom Cylinder - Disassemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Boom Cylinder - Assemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Swing Cylinder - Disassemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Swing Cylinder - Assemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Boom Cylinder - Remove
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Boom Cylinder - Install
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Stabilizer Cylinder - Disassemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Stabilizer Cylinder - Assemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Swing Cylinder - Remove
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Swing Cylinder - Install
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Extendable Stick Cylinder - Remove
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Extendable Stick Cylinder - Install
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Stabilizer Cylinder - Disassemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Stabilizer Cylinder - Assemble
416D, 420D, 424D, 428D, 430D, 432D, 438D and 442D Backhoe Loaders Machine Systems

Service Magazine

New Backup Rings Are Available for Sealing Hydraulic Cylinders with Pitted Grooves {4303, 5102, 5104, 5106, 5456, 7562}
2003/06/30

New Assembly Instructions for Rod Seals on Hydraulic Cylinders are Available {7562}
2001/07/30

Correctly Assembling the Buffer Seal Will Prevent Failure of the U-Cup Seals {7562}
2001/07/30

New Stabilizer Pads Make Stabilizer Operation Quieter {5468, 7150, 7222}
2001/10/08

The D-series Backhoe Loader Has Been Updated {1058, 1273, 4203, 7056, 7451}
2002/04/08

Correction to Disassembly and Assembly , "Stick Cylinder - Assemble" {5458}
2002/07/08

New Hydraulic Tubes Are Used in the Quick Coupler Lines Gp {5057, 5133, 6129}
2003/05/12

Special Instruction, REHS1355, "Field Installation of the Caterpillar Cushion Swing System" Is Available {5057, 5105, 5454}
2002/11/25

Double Lip Wiper Seals Must Be Installed Properly {7562}
2002/12/09

New Rods on New Backhoe Loaders Can Have Different Chrome Finishes {5102, 5104, 5105, 5133, 5456, 5457, 5458, 5468, 5486}
2003/05/12

The Stick Cylinder Has Been Improved {5458}
2004/05/17

New Swing Cylinders Improve Service Life {5105}
2005/03/21

Grease the Swing Frame and Maintain the Gap Between the Spacers and the Swing Frame {5105, 6506}
2005/05/09

A New Bearing Improves the Service Life for the Swing Cylinders {5105}
2005/11/28

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

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

An Improved Seal is Being Used on Loader Lift Cylinders on Certain Backhoe Loaders {5102, 7555}
2011/08/12

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

Caterpillar Parts SIS Catalog 420D :

191-7839 CYLINDER GP-BACKHOE BUCKET

191-7835 CYLINDER GP-BACKHOE BUCKET

122-6404 CYLINDER & MTG GP-COUPLER

224-6236 CYLINDER & LINES GP-THUMB

214-5553 CONVERSION GP-EXTENDABLE STICK

230-9105 CONVERSION GP-CONTROL VALVE

201-6902 CONVERSION GP-CONTROL VALVE

178-3713 CYLINDER GP-COUPLER

155-6586 CYLINDER GP-EXTENDABLE STICK

191-7725 CYLINDER GP-EXTENDABLE STICK

228-3505 CYLINDER GP-LIFT

185-1839 CYLINDER GP-MULTIPURPOSE BUKT

206-0520 CYLINDER GP-STABILIZER

206-0522 CYLINDER GP-STABILIZER

228-3499 CYLINDER GP-STABILIZER

Truck sale:

Caterpillar 420D
- backhoe loader
CARTER MACHINERY COMPANY, INC.

37,500

Caterpillar 420D, backhoe loader, Construction
- backhoe loader
QUINN COMPANY

37,883

Caterpillar 420D, backhoe loader, Construction
- backhoe loader
MILTON CAT

39,174

Caterpillar 420D, backhoe loader, Construction
- backhoe loader
MILTON CAT

Caterpillar 420D, backhoe loader, Construction
- backhoe loader
WESTERN STATES EQUIPMENT