373-5784 CYLINDER GP-HYDRAULIC -STICK PART OF 374-2153 BOOM AR Type 1 300.9D MINI HYD EXCAVATOR

HYDRAULIC SYSTEM

CYLINDER GP

0. 373-5784 CYLINDER G
1. 373-5784 CYLINDER G
2. 373-5785 CYLINDER G
3. 373-5794 CYLINDER G
4. 373-5796 CYLINDER G

DRIVE GP

5. 372-1132 DRIVE GP-P

HYDRAULIC GP

6. 374-2150 HYDRAULIC

LINES GP-AUXILIARY

7. 374-3439 KIT-QUICK

LEVER GP

8. 372-5994 LEVER GP
9. 372-7459 LEVER GP
0. INFORMATION

MINI HYD EXCAVATOR 300.9D MINI HYD EXCAVATOR LJM
300.9D Mini Hydraulic Excavator LJM00001-UP (MACHINE) SEBP5940 300.9D LJM (2011)

HYDRAULIC SYSTEM

CYLINDER GP

373-9777 CYLINDER GP-BOOM

373-5783 CYLINDER GP-HYDRAULIC

373-5784 CYLINDER GP-HYDRAULIC

373-5785 CYLINDER GP-HYDRAULIC

373-5794 CYLINDER GP-HYDRAULIC

373-5796 CYLINDER GP-HYDRAULIC

373-5795 LINES GP-UNDERCARRIAGE CYL

#SEBP59400060

373-5784: CYLINDER GP-HYDRAULIC

CYLINDER GP-HYDRAULIC

373-5784 CYLINDER GP-HYDRAULIC -STICK
PART OF 374-2153 BOOM AR
Type 1

i04246050 SEBP5940

3735784 CYLINDER GP-HYDRAULIC Parts scheme

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Parts for your 300.9D MINI HYD EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	373-5799	[1]	CYLINDER-HYDRAULIC
2.	373-5747	[1]	ROD AS-PISTON
3.	373-5760	[2]	BUSHING
4.	373-5746	[1]	BUSHING
5.	373-5745	[1]	PISTON
6.	373-5685	[1]	SETSCREW
7.	373-5748	[1]	KIT-SEAL
			(INCLUDES O-RING SEALS, BACKUP RING, WEAR RING, SEALS, WIPER RING & SET SCREW)

			PARTS SHOWN IN GRAPHIC(S) WITHOUT A REFERENCE NUMBER ARE NOT SERVICED SEPARATELY

#SEBP59400061

373-5784: CYLINDER GP-HYDRAULIC

CYLINDER GP-HYDRAULIC

373-5784 CYLINDER GP-HYDRAULIC -STICK
PART OF 374-2153 BOOM AR
Type 2

i06826276 SEBP5940

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Parts for your 300.9D MINI HYD EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name	Comments
1.	526-8963	[1]	CYLINDER AS-HYDRAULIC

#SEBP59400062

373-5785: CYLINDER GP-HYDRAULIC

CYLINDER GP-HYDRAULIC

373-5785 CYLINDER GP-HYDRAULIC
60-MM (2.4-IN) BORE X 520-MM (20.5-IN) STROKE
PART OF 374-2153 BOOM AR

i04328050 SEBP5940

3735785 CYLINDER GP-HYDRAULIC Parts scheme

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Parts for your 300.9D MINI HYD EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	373-5798	[1]	CYLINDER GP-HYDRAULIC
2.	129-9959	[1]	CLAMP
3.	8T-4171 M	[1]	BOLT (M6X1X12-MM)
4.	372-1077	[1]	WASHER-SPECIAL (6.4X10.0X0.64-MM THK)
5.	372-1074	[1]	WASHER (6.4X12.5X1.6-MM THK)
6.	373-5742	[1]	ROD AS-PISTON
7.	373-5740	[1]	BUSHING
8.	373-5739	[1]	PISTON
9.	373-5738 M	[1]	NUT (M22X1.5-THD)
10.	373-5760	[2]	BUSHING
11.	373-5737	[1]	KIT-SEAL (HYDRAULIC CYLINDER)
			(INCLUDED O-RING SEALS, WEAR RING, PISTON SEAL, BACKUP RING & WIPER RING)
	M		METRIC PART

#SEBP59400063

373-5794: CYLINDER GP-HYDRAULIC

CYLINDER GP-HYDRAULIC

373-5794 CYLINDER GP-HYDRAULIC
PART OF 374-2150 HYDRAULIC AR

i04246024 SEBP5940

3735794 CYLINDER GP-HYDRAULIC Parts scheme

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Parts for your 300.9D MINI HYD EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	372-5998	[1]	CYLINDER-HYDRAULIC
2.	373-5744	[1]	ROD AS-PISTON
3.	373-5743	[1]	BUSHING
4.	373-5735	[1]	PISTON AS
5.	373-5734 M	[1]	NUT (M18X1.5-THD)
6.	373-5736	[1]	KIT-SEAL (HYDRAULIC CYLINDER)
			(INCLUDES O-RING SEALS, WIPER SEAL, BACKUP RING, PISTON SEAL, WEAR RING & ROD SEAL)

			PARTS SHOWN IN GRAPHIC(S) WITHOUT A REFERENCE NUMBER ARE NOT SERVICED SEPARATELY
	M		METRIC PART

#SEBP59400064

373-5796: CYLINDER GP-HYDRAULIC

CYLINDER GP-HYDRAULIC

373-5796 CYLINDER GP-HYDRAULIC
PART OF 374-2152 BLADE AR

i04246020 SEBP5940

3735796 CYLINDER GP-HYDRAULIC Parts scheme

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Parts for your 300.9D MINI HYD EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	372-7462	[1]	CYLINDER GP-BLADE (HYDRAULIC)
2.	372-7452	[1]	COVER
3.	8T-4191 M	[2]	BOLT (M10X1.5X16-MM)
4.	372-1079	[2]	WASHER-SPECIAL (10.5X16.0X1.10-MM THK)
5.	7X-0623	[2]	WASHER (10.5X21X2-MM THK)
6.	373-5741	[1]	ROD AS-PISTON
7.	373-5740	[1]	BUSHING
8.	373-5739	[1]	PISTON
9.	373-5760	[2]	BUSHING
10.	373-5672	[2]	FITTING
11.	373-5738 M	[1]	NUT (M22X1.5-THD)
12.	373-5737	[1]	KIT-SEAL
			(INCLUDES O-RING SEALS, WEAR RING, PISTON SEAL, BACKUP RING & WIPER RING)
13.	373-5758	[1]	VALVE-CHECK
14.	373-5654	[1]	CONNECTOR

			PARTS SHOWN IN GRAPHIC(S) WITHOUT A REFERENCE NUMBER ARE NOT SERVICED SEPARATELY
	M		METRIC PART

#SEBP59400065

372-1132: DRIVE GP-PUMP

DRIVE GP-PUMP

372-1132 DRIVE GP-PUMP
PART OF 374-2150 HYDRAULIC AR

i04246128 SEBP5940

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Parts for your 300.9D MINI HYD EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	372-1098	[1]	COUPLER
2.	372-1099	[1]	MOUNT
3.	8T-8894 M	[3]	BOLT-SOCKET HEAD (M10X1.5X20-MM)
4.	372-1079	[10]	WASHER-SPECIAL (10.5X16.0X1.10-MM THK)
5.	7X-0623	[8]	WASHER (10.5X21X2-MM THK)
6.	8T-4136 M	[10]	BOLT (M10X1.5X25-MM)
	M		METRIC PART

#SEBP59400066

374-2150: HYDRAULIC AR

HYDRAULIC AR

374-2150 HYDRAULIC AR
PART OF 369-7865 COMMON AR

i04245999 SEBP5940

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Parts for your 300.9D MINI HYD EXCAVATOR:

CATERPILLAR SIS

Part No	Qty	Parts name
372-5972 Y	[1]	CONNECTOR & ELBOW GP
373-9777 Y	[1]	CYLINDER GP-BOOM
373-5794 Y	[1]	CYLINDER GP-HYDRAULIC
372-1132 Y	[1]	DRIVE GP-PUMP
373-1850 Y	[1]	LINES GP-HYDRAULIC (MAIN CONTROL VALVE)
373-1848 Y	[1]	LINES GP-BUCKET
373-1844 Y	[1]	LINES GP-CONTROL (SWING)
373-1845 Y	[1]	LINES GP-MOTOR
373-1849 Y	[1]	PEDAL & LINES GP-BOOM SWING
373-5795 Y	[1]	LINES GP-UNDERCARRIAGE CYL (ADJUSTABLE GAUGE)
372-7461 Y	[1]	LINES GP-PUMP
372-1159 Y	[1]	PLUG GP
375-8782 Y	[1]	PLUG GP
372-5971 Y	[1]	PUMP GP-HYDRAULIC
373-5759 Y	[1]	SWIVEL GP
372-1154 Y	[1]	TANK GP-HYDRAULIC
372-1156 Y	[1]	VALVE GP-DRAIN
373-1843 Y	[1]	VALVE & MTG GP-BLADE
373-9768 Y	[1]	VALVE GP-MAIN CONTROL
Y		SEPARATE ILLUSTRATION

#SEBP59400067

374-3439: KIT-QUICK DISCONNECT

KIT-QUICK DISCONNECT

374-3439 KIT-QUICK DISCONNECT
AN ATTACHMENT

i04245983 SEBP5940

3743439 KIT-QUICK DISCONNECT Parts scheme

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Parts for your 300.9D MINI HYD EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	374-0428	[1]	COUPLER-QUICK (FEMALE)
2.	161-2560	[1]	CAP-DUST
3.	374-0430	[1]	COUPLER-QUICK (MALE)
4.	161-2561	[1]	CAP-DUST

#SEBP59400068

372-5994: LEVER GP

LEVER GP

372-5994 LEVER GP
PART OF 374-2147 OPERATOR AR

i04328033 SEBP5940

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Parts for your 300.9D MINI HYD EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	372-5992	[1]	LEVER AS
2.	372-5960	[2]	PIN
3.	372-5932	[1]	PIN
4.	372-5961	[1]	SHAFT
5.	6V-8235	[1]	PIN-SPRING
6.	372-5959	[1]	LEVER AS
7.	372-5964	[4]	WASHER (19X30X2.5-MM THK)
8.	372-5962	[2]	BEARING
9.	372-5936	[1]	HANDLE-LEVER
10.	372-5986	[2]	PLATE
11.	477-8068	[2]	PIN-COTTER
12.	372-5980	[1]	LEVER AS
13.	372-5982	[1]	LEVER AS
14.	423-1731	[1]	LEVER AS
15.	423-1732	[1]	LEVER AS
16.	372-5976	[1]	WASHER (18X25X1-MM THK)

#SEBP59400069

372-7459: LEVER GP

LEVER GP

372-7459 LEVER GP -BOOM, BUCKET
PART OF 374-2147 OPERATOR AR

i04246080 SEBP5940

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Parts for your 300.9D MINI HYD EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	372-1111	[1]	CLEVIS AS
2.	372-7434	[1]	HANDLE
3.	372-7446	[1]	LEVER AS
4.	372-1117	[2]	BUSHING
5.	372-1087	[2]	BEARING
6.	372-1110	[1]	SPACER (16X22X15-MM THK)
7.	372-1109	[1]	WASHER (9X40X2-MM THK)
8.	372-1112	[1]	PIN
9.	7X-0622	[1]	WASHER (13X24X2.5-MM THK)
10.	477-8067	[1]	PIN-COTTER
11.	372-1116	[1]	BOOT
12.	372-1078	[1]	WASHER-SPECIAL (8.4X13.0X0.9-MM THK)
13.	8T-4189 M	[1]	BOLT (M8X1.25X20-MM)
14.	8T-4224	[1]	WASHER-HARD (8.8X16X2-MM THK)

			PARTS SHOWN IN GRAPHIC(S) WITHOUT A REFERENCE NUMBER ARE NOT SERVICED SEPARATELY
	M		METRIC PART

Information:

HYDRAULIC SYSTEM

CYLINDER GP

Operation and Maintenance Manual

Swing Frame and Cylinder Bearings - Lubricate
300.9D and 300.9D VPS Mini Hydraulic Excavator

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}

Technical Information Bulletin

Blade Cylinder Check Valve May Fail on Certain 300.9D Mini Hydraulic Excavators {5362, 7562}
Blade Cylinder Check Valve May Fail on Certain 300.9D Mini Hydraulic Excavators {5362, 7562}

Specifications

Undercarriage Cylinder (Adjustable Gauge)
300.9D Mini Hydraulic Excavator

Bucket Cylinder
300.9D Mini Hydraulic Excavator

Undercarriage Cylinder (Adjustable Gauge)
300.9D Mini Hydraulic Excavator

Boom Cylinder
300.9D Mini Hydraulic Excavator

Blade Cylinder
300.9D Mini Hydraulic Excavator

Swing Cylinder
300.9D Mini Hydraulic Excavator

Track Tension Cylinder
300.9D Mini Hydraulic Excavator

Stick Cylinder
300.9D Mini Hydraulic Excavator

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 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

Boom Hydraulic System
300.9D Mini Hydraulic Excavator

Blade Hydraulic System
300.9D Mini Hydraulic Excavator

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}

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}

Testing and Adjusting

Cylinder Speed - Check
300.9D Mini Hydraulic Excavator

Cylinder Drift - Check
300.9D Mini Hydraulic Excavator

Bench Test Procedures

Service Magazine

Procedure Now Available to Test the Position Sensor of a Hydraulic Cylinder {1439, 7562}
2013/02/28

Compatible Puller Stud and Hydraulic Cylinder Capacity Chart {0599, 7000, 7562}
Compatible Puller Stud and Hydraulic Cylinder Capacity Chart {0599, 7000, 7562}

Caterpillar Parts SIS Catalog 300.9D :

373-5783 CYLINDER GP-HYDRAULIC

373-9777 CYLINDER GP-BOOM

372-5972 CONNECTOR & ELBOW GP

374-2148 UNDERCARRIAGE AR

372-5995 UNDERCARRIAGE AR

372-5975 TRACK GP-RUBBER

373-5784 CYLINDER GP-HYDRAULIC

373-5785 CYLINDER GP-HYDRAULIC

373-5794 CYLINDER GP-HYDRAULIC

373-5796 CYLINDER GP-HYDRAULIC

372-1132 DRIVE GP-PUMP

374-2150 HYDRAULIC AR

374-3439 KIT-QUICK DISCONNECT

372-5994 LEVER GP