Installing the 421-0263 High Flow Kit on Certain Skid Steer Loaders and Compact Track Loaders {5073} Caterpillar

Compact Track Loader

239D (S/N: CD41-UP; BL91-UP; T9S1-UP)

249D (S/N: AH91-UP; D9E1-UP; GWR1-UP)

Skid Steer Loader

226D (S/N: HR61-UP; HRD1-UP)

232D (S/N: EH21-UP; KXC1-UP; DPR1-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 covers the installation of the 421-0263 High Flow Kit.

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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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.

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, including human factors that can affect safety. This person should also have the necessary training, skills, and tools to perform these functions properly.

Improper operation, lubrication, maintenance, or repair of this product can be dangerous and could result in injury or death.

Do not operate or perform lubrication, maintenance, or repair on this product, until you verify that you are authorized to perform this work, and have read and understood the operation, lubrication, maintenance, and repair information.

The information, specifications, and illustrations in this publication are based on information that was available at the time that the publication was written. The specifications, torques, pressures, measurements, adjustments, illustrations, and other items can change at any time. These changes can affect the service that is given to the product. Obtain the complete and most current information before you start any job. Cat dealers have the most current information available.

In the United States, the maintenance, replacement, or repair of the emission control devices and systems may be performed by any repair establishment or individual of the owner choosing.

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, or to join or fasten together.

Disconnect - To remove from an electrical circuit, or to separate.

Fill or Refill - To supply a container with as much material as it is specified to contain.

Finger Tighten - To apply tension or torque with one's digits unaided by a tool or lever.

Insert - To put in or between.

Keep or Store - To retain for reinstallation or reuse.

Remove - To take off.

Replace - To restore, or return to a former or proper place.

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

Required Parts

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Note: If needed, the right-hand joystick with roller for proportional flow operation may be purchased separately.For machines with ISO Controls configuration, refer to 345-6581 Electrohydraulic Control Gp for components.For machines with Hand and Foot Controls configuration, refer to 485-0401 Electrohydraulic Control Gp for components.

Machine Preparation

1. Park the machine on a level surface. Refer to the appropriate Operation and Maintenance Manual for the proper parking procedure.

2. Make sure that the machine remains OFF during this entire procedure.

3. Raise and lock the cab in the upright position. Refer to the Operation and Maintenance Manual for the proper procedure.

4. Before removing the standard flow gear pump, drain the hydraulic fluid tank to avoid spills or injuries.

Removal Procedure of Standard Flow Pump

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Note: For machines with ride control, remove the tee connector and related hose for Step 1.

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Installation Procedure of the 421-0263 High Flow Kit

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Note: For machines with ride control, install the tee connector and related hose for Step 8.

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Film Installation

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Avoid prolonged skin contact with isopropyl alcohol. Avoid breathing the vapors in enclosed areas without adequate ventilation and do not smoke. Isopropyl alcohol is flammable. Do not use near open flame, welding operations, or around heated surfaces exceeding 482°C (900°F).

Surface preparation is important in the installation of films. The surface must be clean and dry in order for the films to adhere to the machine. Be sure that oil, grease, and dirt have been removed before you install the new films. The installation instructions that follow are recommended:

1. A 50:50 mixture of isopropyl alcohol and water is generally an adequate cleaning agent for cleaning the mounting surface.

2. Apply solvent to the contact area. Wipe the surface with a lint free cloth until the surface is dry.

3. Carefully remove the liner from the back of the film. Avoid touching the adhesive.
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   Illustration 28	g06065738
   Typical example

4. Apply the film to the surface underneath the existing film that contains the machine model number on both sides of machine. Ensure that the upper corner of the film intersects the edge of the plate shown in Illustration 28.

   Note: The film cannot be repositioned once the film is applied. If the film is installed incorrectly, the film must be removed and discarded. Start again and use a new film.

5. Press the film firmly into place. Apply pressure evenly across the entire surface of the film. The use of a hand roller or a squeegee is recommended to ensure maximum adhesion to the mating surface. Remove any bubbles that remain under the film.

Software Installation

Ensure that the 460-5343 Joystick Control Group (Right-Hand Joystick), is already installed on the machine. If changing the control group is necessary, refer to Special Instruction, REHS8704 for installation instructions.

The 421-0263 High Flow Kit must be configured using Cat^® Electronic Technician (Cat ET) Service Tool.

Machine Configuration

1. With the key in the ON position and engine OFF, use Cat ET to select the machine ECM.
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2. From the menu, select "Service", "Configuration", and then "Implement Configuration".
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3. In the configuration screen, double-click on the "Auxiliary Hydraulic High Flow System Installation Status" link.
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4. In the pop-up window, change the "New Value" field to "Installed" and click "OK".

5. Turn the start key to the OFF position and wait at least 15 seconds. Then, turn the start key back to the ON position.

   Note: The new feature will be activated on the next power cycle.

6. From the Cat ET menu, select "Service", then "Configuration", and then "Implement Configuration".
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7. In the configuration screen, double-click on the "Auxiliary Hydraulic High Flow System Installation Status" link. Ensure that the feature is set to "Installed".