Installation Procedure for the 330-2521 Front Lines Gp on Certain Hydraulic Excavators {5057} Caterpillar

Installation Procedure for the 330-2521 Front Lines Gp on Certain Hydraulic Excavators {5057}

Usage:

Excavator: 349E (S/N: FJB1-UP; ETC1-UP; DGE1-UP; SPG1-UP; TFG1-UP; RGH1-UP; FEJ1-UP; KCN1-UP; MZW1-UP; KFX1-UP; MPZ1-UP; WHZ1-UP); 349F (S/N: BZ21-UP; KEA1-UP; HLB1-UP; HPD1-UP; TEW1-UP); 352F (S/N: WNA1-UP; YEG1-UP; A9J1-UP; KBP1-UP)
Work Tool: HYDRAULIC KIT (S/N: HKB1-UP)

Introduction

This special instruction covers the installation procedure for 330-2521 Front Lines Group on the models and applications listed above.

Safety Section

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Do not operate or work on this machine unless you have read and understand the instructions and warnings in the Operation and Maintenance Manuals. Failure to follow the instructions or heed the warnings could result in injury or death. Contact your Cat dealer for replacement manuals. Proper care is your responsibility.

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Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.

Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.

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Personal injury or death can result from improperly checking for a leak.
Always use a board or cardboard when checking for a leak. Escaping air or fluid under pressure, even a pin-hole size leak, can penetrate body tissue causing serious injury, and possible death.

If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.

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Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact skin.

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Illustration 1	g00104545

Prevent the machine from movement. Park the machine on a level surface.

Attach a "Do Not Operate" warning tag or a similar warning tag to the start switch or to the controls before you service or repair the equipment . These warning tags (Special Instruction, SEHS7332) are available from your Caterpillar dealer.

Required Parts

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Table 1
330-2521 Front Lines Gp (- 06)
Item	Qty	Part No.	Description
(1)	1	8J-6875	Shuttle Valve Gp
(2)	1	087-4432	Hose As
(3)	1	165-6365	Fitting As
(4)	1	296-7167	Support As
(5)	1	297-0265	Solenoid and Relief Valve Gp
(6)	1	297-0266	Solenoid and Relief Valve Gp
(7)	2	337-2596	Block
(8)	1	337-2600	Hose As
(9)	1	337-2649	Block
(10)	1	338-6971	Pressure Sensor Gp
(11)	1	340-3002	Support
(12)	1	340-3003	Support
(13)	1	340-3008	Plate
(14)	1	351-5040	Hose As
(15)	1	351-5069	Hose As
(16)	1	351-5074	Hose As
(17)	2	352-7063	Cap
(18)	1	358-7463	Tube As
(19)	1	361-8910	Hose As
(20)	1	361-8913	Hose As
(21)	1	366-0828	Support As
(22)	8	107-2724	Bolt
(23)	4	108-4282	Bolt
(24)	2	148-8336	Connector As
(25)	1	148-8374	Elbow As
(26)	1	148-8407	Plug As
(27)	1	150-4050	Elbow As
(28)	5	1P-3703	Rectangular Seal
(29)	4	1P-3704	Rectangular Seal
(30)	2	1P-3705	Rectangular Seal
(31)	6	1P-4578	Half Flange
(32)	8	1P-5767	Half Flange
(33)	5	4J-0522	O-Ring Seal
(34)	1	5P-7470	Clip
(35)	1	5P-7471	Clip
(36)	1	5P-8182	Grommet
(37)	8	6V-0400	Half Flange
(38)	14	8T-4121	Hard Washer
(39)	2	8T-4136	Bolt
(40)	17	8T-4139	Bolt
(41)	16	8T-4184	Bolt
(42)	20	8T-4194	Bolt
(43)	12	8T-4196	Bolt
(44)	49	8T-4223	Hard Washer

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Illustration 2	g06320404
Overview of the 330-2521 Front Lines Gp