Procedure to Install a Coupler Lines Kit on Certain Backhoe Loaders {5057} Caterpillar

Backhoe Loader

422F2 (S/N: LYF1-UP)

427F2 (S/N: HWK1-UP)

428F2 (S/N: LYG1-UP; HWN1-UP)

432F2 (S/N: LYJ1-UP; HWP1-UP)

434F2 (S/N: LYK1-UP; HWR1-UP)

444F2 (S/N: LYL1-UP; HWS1-UP)

Introduction

Do not perform any procedure in this Special Instruction until you have read the information and you understand the information. This Special Instruction provides the parts and procedure for the installation of a 473-0888 Coupler Lines Kit, 473-0889 Coupler Lines Kit, or 473-0890 Coupler Lines Kit onto the machines listed above.

Caterpillar Channel 1 Videos

For supplemental information on this procedure, refer to the following video. The previous training has been replaced with the video below.

Note: A CWS login is required to access Caterpillar Channel 1. Scan the QR code below with a QR enabled device or copy the link that follows.

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Reference: Specifications, SENR3130, "Torque Specifications"

Safety Section

Work safely. Most accidents that involve product operation, maintenance, and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs.

A person must be alert to potential hazards. This person must also have the necessary training, skills, and tools to perform these functions properly.

Safety precautions and warnings are provided in this instruction and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons. Caterpillar cannot anticipate every possible circumstance of a potential hazard.

Therefore, the warnings in this publication and the warnings that are on the product are not all inclusive. Avoid using a tool, a procedure, a work method, or operating technique that is not recommended by Caterpillar. If used, ensure the safety of the operating personnel and others.

Ensure that the product will not be damaged or the product will be made unsafe by the operation, lubrication, maintenance, or the repair procedures.

Operation and maintenance of the machine must not occur unless the instructions and warnings in the machines Operation and Maintenance Manual have been read and are understood.

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Accidental machine starting can cause injury or death to personnel working on the machine. To avoid accidental machine starting, turn the battery disconnect switch to the OFF position and remove the key. If the machine is not equipped with a battery disconnect switch, disconnect the battery cables from the battery and tape the battery clamps. Place a do not operate tag at the battery disconnect switch location to inform personnel that the machine is being worked on.

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Personal injury or death can result from sudden machine movement. Sudden movement of the machine can cause injury to persons on or near the machine. To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine.

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Personal injury or death can result from improper lifting or blocking. When a hoist or jack is used to lift any part or component, stand clear of the area. Be sure the hoist or jack has the correct capacity to lift a component. Install blocks or stands before performance of any work under a heavy component. Approximate weights of the components are shown. Clean all surfaces where parts are to be installed.

General Information

Graphic Color Description

Color-coding of targeted components, or sections of a part, is used to communicate a required action.

This table shows the different colors and what is represented when used in a graphic.

(Blue) The primary component of focus for a particular step. Target or primary component to be installed or removed. Installation implied unless otherwise noted with a symbol.

(CAT® Yellow) Description of parts.

(Yellow) Components placed aside for access, but not removed. Highlighted areas of adjustment, inspection, or special attention.

(Cyan) Special tools or other equipment required for use in a particular step.

(Light Gray) Components used for reference.

(Magenta) Any fastener, retainer, or electrical connector used to install or remove the primary component.

Graphic Symbol Description

This section includes all the symbol graphics used throughout the Visual Service Procedure (VSP), along with a brief description of what the symbol represents.

Attach - To connect together or to fasten on something.

Connect - To place in an electrical circuit. To join or fasten together.

Inflate - To cause to expand by filling with a gas.

Insert - To put in or between.

Keep, Store - To retain for reinstallation or reuse.

Level - To position a surface in a horizontal orientation. To position in vertical dimension. To align to assist positioning a surface in a horizontal orientation.

Lower - To drop to a reduced energy position. To reduce the level of material in a container. To cause to descend.

Open - To unseal or get access to.

Operation and Maintenance Manual - Refer to a procedure in a Operation and Maintenance Manual.

Position - To locate to the desired or intended location.

Pull - To apply force to cause motion towards the person or machine exerting the force. A persistent tendency.

Remove - To take off.

Rotate - Counter Clockwise - To turn on an axis. To alternate position or orientation, for the purpose of achieving even wear.

Service Indicator - Refer to a Technical Manual, Warning, Caution, or Notice

Tighten - To make nearer, to stretch fully, without slack, or to apply tension or torque.

Required Parts

Kit for 4.27 m (14 ft) Extendable Stick

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473-0888 Coupler Lines Kit

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Detail view of area "A"

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Detail view of area "B"

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Detail view of area "C"

Kit for 4.88 m (16 ft) Extendable Stick

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473-0889 Coupler Lines Kit

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Detail view of area "A"

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Detail view of area "B"

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Detail view of area "C"

Kit for 4.27 m (14 ft) Standard Stick

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473-0890 Coupler Lines Kit

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Detail view of area "A"

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Detail view of area "B"

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Detail view of area "C"

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Detail view of area "D"

Required Tools

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Preparing the Machine

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Refer to Testing and Adjusting, UENR3747, " System Pressure - Release".

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Refer to Operation and Maintenance Manual, SEBU9213, " Battery Disconnect".

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Hydraulic Installation

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Step 3a is for machines with equal sized tires. Step 3b is for machines with unequal sized tires.

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Electrical Wiring Group

Electrical Parts

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Detail of item (17) - 438-3680 Quick Coupler Wiring Gp

Electrical Installation

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