Procedure to Install Axle Oscillation Stop Block on Certain 988K and 988K XE Wheel Loaders {3259, 7050} Caterpillar

Wheel Loader

988K (S/N: T8E1-UP; L8X1-UP; LWX1-UP; TWX1-UP)

988K XE (S/N: E8X1-UP; EWX1-UP)

Reference: Disassembly and Assembly, KENR6720, "988K Wheel Loader, 834K Wheel Dozer and 836K Compactor Machine Systems"

Reference: Disassembly and Assembly, M0080216, "988K XE Wheel Loader Machine Systems"

Reference: Special Instruction, REHS1841, "General Welding Procedures"

Introduction

The visual service procedure special instruction provides part and instruction for installing Axle 443-1542 Stop block on certain wheel loaders.

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

Safety Section

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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Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.

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Do not attempt to disassemble or assemble this machine until you read and understand the disassembly and assembly instructions. Improper disassembly and assembly procedures could result in injury or death.

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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 or release of air pressure or oil pressure can cause injury to persons on or near the machine. To help prevent possible injury before testing and adjusting any air system or hydraulic system, perform the procedure in the Testing and Adjusting, "General Information" section.

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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.

The descriptions below illustrate 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 disconnected, connected, or 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.

Clean - To remove foreign or undesired material.

Inspect - To confirm, inspect, look, or observe to confirm or assure accuracy, conformance.

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.

Measure - To determine the dimension, area, volume, or other quantifiable property of an object. A desired quantity of something.

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

Paint - To coat

Position - To locate to the desired or intended location.

Remove - To take off.

Weld - To join by heating until liquid portions of two or more pieces of metal in contact with each other and allowing the common puddle to solidify.

Torque Specification

Refer Torque Specifications, SENR3130, "Torque Specifications" for general standard torque reference guide for all Cat fasteners.

Machine Preparation

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Refer Operation and Maintenance Manual, SEBU8776, System Pressure Release

Required Parts

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Location

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Procedure

Removal Procedure

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Installation Procedure

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Positioning of blocks for welding

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Bottom view of Engine frame

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Checking of orientation of the block

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Tack welding of block

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Bottom view of frame (W1) 8 mm (0.3 inch) fillet weld on joints towards outside of the frame (W2) 12 mm (0.5 inch) fillet weld on joints towards inside of the frame

Illustration 14	g06317996