Installation of the 558-1387 Front Lines Gp on Certain Next Generation Hydraulic Excavators {5057} Caterpillar

Installation of the 558-1387 Front Lines Gp on Certain Next Generation Hydraulic Excavators {5057}

Usage:

320 BR6

Excavator: 320 (S/N: BR61-UP; ZBN1-UP; HEX1-UP); 320 GC (S/N: DKJ1-UP; KTN1-UP); 323 (S/N: BR91-UP; YBL1-UP; RAZ1-UP)

Introduction

Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.

Safety Section

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NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, PERJ1017, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat^® products. Dispose of all fluids according to local regulations and mandates.

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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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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 the equipment. These warning tags (Special Instruction, SEHS7332) are available from your Caterpillardealer.

Required Parts

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Table 1
558-1387 Front Lines Gp (- 02)
Item	QTY	Part No.	Part Name
(1)	4	1P-3702	Rectangular Seal
(2)	1	1P-3703	Rectangular Seal
(3)	1	1P-3704	Rectangular Seal
(4)	2	1P-4577	Half Flange
(5)	6	1P-4578	Half Flange
(6)	1	4J-0520	O-Ring Seal
(7)	5	4J-0522	O-Ring Seal
(8)	1	7Y-5237	U-Bolt
(9)	40	8T-4121	Hard Washer
(10)	6	8T-4136	Bolt
(11)	16	8T-4182	Bolt
(12)	16	8T-4196	Bolt
(13)	10	8T-4223	Hard Washer
(14)	10	8T-4956	Bolt
(15)	8	8T-9403	Half Flange
(16)	2	096-4883	Locknut
(17)	4	101-7404	Bolt
(18)	4	108-1782	Bolt
(19)	2	148-8313	Adapter As
(20)	1	148-8360	Elbow As
(21)	1	148-8442	Tee As
(22)	1	296-7058	Elbow As
(23)	1	329-2709	Block
(24)	2	338-6971	Pressure Sensor Gp
(25)	4	352-7064	Cap
(26)	1	492-2021	Support
(27)	1	520-8686	Block
(28)	1	520-8727	Support
(29)	1	545-9109	Solenoid and Relief Valve Gp
(30)	1	545-9111	Solenoid and Relief Valve Gp
(31)	1	558-0341	Hose As
(32)	4	105-3483	Bolt
(33)	4	108-1781	Bolt
(34)	2	164-6874	Elbow Fitting
(35)	1	330-2470	Block
(36)	1	347-6011	Hose As
(37)	1	492-2031	Hose As
(38)	1	512-7854	Support
(39)	1	519-0946	Hose As
(40)	1	519-8289	Pipe As
(41)	1	520-8728	Support
(42)	1	558-0337	Hose As
(43)	1	575-1725	Hose As

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Illustration 2	g06356025
Overview of the 558-1387 Front Lines Gp

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Illustration 3	g06356055
Overview of the 558-1387 Front Lines Gp

Installation Procedure

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Illustration 4	g06404885
(5) 1P-4578 Half Flange (7) 4J-0522 O-Ring Seal (8) 7Y-5237 U-Bolt (9) 8T-4121 Hard Washer (10) 8T-4136 Bolt (12) 8T-4196 Bolt (16) 096-4883 Locknut (17) 101-7404 Bolt (38) 512-7854 Support (40) 519-8289 Pipe As

Install pipe assembly, seals and brackets.

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Illustration 5	g06404911
(1) 1P-3702 Rectangular Seal (2) 1P-3703 Rectangular Seal (3) 1P-3704 Rectangular Seal (4) 1P-4577 Half Flange (5) 1P-4578 Half Flange (6) 4J-0520 O-Ring Seal (7) 4J-0522 O-Ring Seal (8) 7Y-5237 U-Bolt (9) 8T-4121 Hard Washer (10) 8T-4136 Bolt (11) 8T-4182 Bolt (12) 8T-4196 Bolt (13) 8T-4223 Hard Washer (14) 8T-4956 Bolt (15) 8T-9403 Half Flange (16) 096-4883 Locknut, 22 ± 3 N·m (16 ± 2 lb ft) (17) 101-7404 Bolt (18) 108-1782 Bolt (19) 148-8313 Adapter As (20) 148-8360 Elbow As (21) 148-8442 Tee As (22) 296-7058 Elbow Fitting (23) 329-2709 Block (24) 338-6971 Pressure Sensor Gp, 64 ± 3 N·m (47 ± 2 lb ft), NOTE: Apply thin layer of oil to threads before installing. (25) 352-7064 Cap (26) 492-2021 Support (27) 520-8686 Block (28) 520-8727 Support (29) 545-9109 Solenoid and Relief Valve Gp (30) 545-9111 Solenoid and Relief Valve Gp (31) 558-0341 Hose As, 160 ± 16 N·m (118 ± 12 lb ft) (32) 105-3483 Bolt (33) 108-1781 Bolt (34) 164-6874 Elbow Fitting (35) 330-2470 Block (36) 347-6011 Hose As (37) 492-2031 Hose As, 160 ± 16 N·m (118 ± 12 lb ft) (38) 512-7854 Support (39) 519-0946 Hose As (40) 519-8289 Pipe As (41) 520-8728 Support (42) 558-0337 Hose As, 160 ± 16 N·m (118 ± 12 lb ft) (43) 575-1725 Hose As, 160 ± 16 N·m (118 ± 12 lb ft)

Install valves, brackets, and flanges as shown.

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Illustration 6	g06404929
(1) 1P-3702 Rectangular Seal (2) 1P-3703 Rectangular Seal (3) 1P-3704 Rectangular Seal (4) 1P-4577 Half Flange (5) 1P-4578 Half Flange (6) 4J-0520 O-Ring Seal (7) 4J-0522 O-Ring Seal (8) 7Y-5237 U-Bolt (9) 8T-4121 Hard Washer (10) 8T-4136 Bolt (11) 8T-4182 Bolt (12) 8T-4196 Bolt (13) 8T-4223 Hard Washer (14) 8T-4956 Bolt (15) 8T-9403 Half Flange (16) 096-4883 Locknut, 22 ± 3 N·m (16 ± 2 lb ft) (17) 101-7404 Bolt (18) 108-1782 Bolt (19) 148-8313 Adapter As (20) 148-8360 Elbow As (21) 148-8442 Tee As (22) 296-7058 Elbow Fitting (23) 329-2709 Block (24) 338-6971 Pressure Sensor Gp, 64 ± 3 N·m (47 ± 2 lb ft), NOTE: Apply thin layer of oil to threads before installing. (25) 352-7064 Cap (26) 492-2021 Support (27) 520-8686 Block (28) 520-8727 Support (29) 545-9109 Solenoid and Relief Valve Gp (30) 545-9111 Solenoid and Relief Valve Gp (31) 558-0341 Hose As, 160 ± 16 N·m (118 ± 12 lb ft) (32) 105-3483 Bolt (33) 108-1781 Bolt (34) 164-6874 Elbow Fitting (35) 330-2470 Block (36) 347-6011 Hose As (37) 492-2031 Hose As, 160 ± 16 N·m (118 ± 12 lb ft) (38) 512-7854 Support (39) 519-0946 Hose As (40) 519-8289 Pipe As (41) 520-8728 Support (42) 558-0337 Hose As, 160 ± 16 N·m (118 ± 12 lb ft) (43) 575-1725 Hose As, 160 ± 16 N·m (118 ± 12 lb ft)

Install caps, flanges, and seals as shown.

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Illustration 7	g06404940
(1) 1P-3702 Rectangular Seal (2) 1P-3703 Rectangular Seal (3) 1P-3704 Rectangular Seal (4) 1P-4577 Half Flange (5) 1P-4578 Half Flange (6) 4J-0520 O-Ring Seal (7) 4J-0522 O-Ring Seal (8) 7Y-5237 U-Bolt (9) 8T-4121 Hard Washer (10) 8T-4136 Bolt (11) 8T-4182 Bolt (12) 8T-4196 Bolt (13) 8T-4223 Hard Washer (14) 8T-4956 Bolt (15) 8T-9403 Half Flange (16) 096-4883 Locknut, 22 ± 3 N·m (16 ± 2 lb ft) (17) 101-7404 Bolt (18) 108-1782 Bolt (19) 148-8313 Adapter As (20) 148-8360 Elbow As (21) 148-8442 Tee As (22) 296-7058 Elbow Fitting (23) 329-2709 Block (24) 338-6971 Pressure Sensor Gp, 64 ± 3 N·m (47 ± 2 lb ft), NOTE: Apply thin layer of oil to threads before installing. (25) 352-7064 Cap (26) 492-2021 Support (27) 520-8686 Block (28) 520-8727 Support (29) 545-9109 Solenoid and Relief Valve Gp (30) 545-9111 Solenoid and Relief Valve Gp (31) 558-0341 Hose As, 160 ± 16 N·m (118 ± 12 lb ft) (32) 105-3483 Bolt (33) 108-1781 Bolt (34) 164-6874 Elbow Fitting (35) 330-2470 Block (36) 347-6011 Hose As (37) 492-2031 Hose As, 160 ± 16 N·m (118 ± 12 lb ft) (38) 512-7854 Support (39) 519-0946 Hose As (40) 519-8289 Pipe As (41) 520-8728 Support (42) 558-0337 Hose As, 160 ± 16 N·m (118 ± 12 lb ft) (43) 575-1725 Hose As, 160 ± 16 N·m (118 ± 12 lb ft)

Install hoses, blocks, and seals as shown.

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Illustration 8	g06404946
Valve group support removed to show port locations. (1) 1P-3702 Rectangular Seal (2) 1P-3703 Rectangular Seal (3) 1P-3704 Rectangular Seal (4) 1P-4577 Half Flange (5) 1P-4578 Half Flange (6) 4J-0520 O-Ring Seal (7) 4J-0522 O-Ring Seal (8) 7Y-5237 U-Bolt (9) 8T-4121 Hard Washer (10) 8T-4136 Bolt (11) 8T-4182 Bolt (12) 8T-4196 Bolt (13) 8T-4223 Hard Washer (14) 8T-4956 Bolt (15) 8T-9403 Half Flange (16) 096-4883 Locknut, 22 ± 3 N·m (16 ± 2 lb ft) (17) 101-7404 Bolt (18) 108-1782 Bolt (19) 148-8313 Adapter As (20) 148-8360 Elbow As (21) 148-8442 Tee As (22) 296-7058 Elbow Fitting (23) 329-2709 Block (24) 338-6971 Pressure Sensor Gp, 64 ± 3 N·m (47 ± 2 lb ft), NOTE: Apply thin layer of oil to threads before installing. (25) 352-7064 Cap (26) 492-2021 Support (27) 520-8686 Block (28) 520-8727 Support (29) 545-9109 Solenoid and Relief Valve Gp (30) 545-9111 Solenoid and Relief Valve Gp (31) 558-0341 Hose As, 160 ± 16 N·m (118 ± 12 lb ft) (32) 105-3483 Bolt (33) 108-1781 Bolt (34) 164-6874 Elbow Fitting (35) 330-2470 Block (36) 347-6011 Hose As (37) 492-2031 Hose As, 160 ± 16 N·m (118 ± 12 lb ft) (38) 512-7854 Support (39) 519-0946 Hose As (40) 519-8289 Pipe As (41) 520-8728 Support (42) 558-0337 Hose As, 160 ± 16 N·m (118 ± 12 lb ft) (43) 575-1725 Hose As, 160 ± 16 N·m (118 ± 12 lb ft)

Install remaining hoses, connectors and fittings as shown.
Unless specified, tighten all fittings and hardware to standard torque.
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Illustration 9 g00687600
Check for leaks.