828040 1 Mariner PRESSURE SWITCH

Introduction
Table 1
Revision History
Revision Summary of Changes
01 "Caterpillar Channel 1 Videos" Section has been added. This special instruction contains the disassembly and assembly procedure for DEF heated lines on certain large mining trucks and large wheel loaders.Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.Caterpillar Channel 1 Videos
Illustration 1 g06471531Reference: For more information, refer to supplemental video "Removal and Installation Procedure for DEF Heated Lines on Certain machine Engines" on Caterpillar Channel1.Note: Click or copy the following link into a web browser (a CWS login is required to access Caterpillar Channel1), or scan the following QR code using a QR enabled device.https://channel1.mediaspace.kaltura.com/media/t/1_mbj4lbtj
Illustration 2 g06488248Safety Section
Use only proper tools and observe all precautions that pertain to the use of those tools. Failure to follow these procedures can result in personal injury. The following procedures should also be observed.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. The installer must be alert to potential hazards and have the necessary training, skills, and tools needed to perform these functions properly. Wear safety equipment, such as eye protection and foot protection, and other protection as is appropriate to the work site.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 that might involve a potential hazard. Therefore, the warnings in this publication and the warnings that are on the product are not all inclusive. Ensure that any tool, procedure, work method, or operating technique you use that is not recommended by Caterpillar is safe. Ensure that the product will not be damaged or the product will be made unsafe by the operation, lubrication, maintenance, or the repair procedures that are used.
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.
When removing a major component or attachment, ensure that it is properly blocked or secured before removing mounting hardware. An assembly that is disconnected without proper blocking may shift or fall, resulting in serious injury or death of personnel or machine damage.
Personal injury or death can result from improper maintenance procedures. To avoid injury or death, follow the procedures exactly as stated below.
Personal injury can result from improper handling of chemicals.Make sure you use all the necessary protective equipment required to do the job.Make sure that you read and understand all directions and hazards described on the labels and material safety data sheet of any chemical that is used.Observe all safety precautions recommended by the chemical manufacturer for handling, storage, and disposal of chemicals.
Before servicing/performing maintenance on the machine, electrical power must be physically disconnected; battery plugs must be disconnected from the batteries, or the trailing cable must be unplugged, and warning tags and padlocks shall be applied by a certified electrician. Certified electricians shall perform or direct any electrical work, including any energized testing, repair work in controllers, motors, or other approved compartments, and shall insure that all compartments are properly closed and inspected prior to re-energization. All applicable lock out and tag out procedures must be followed.
Do not operate the machine if any guards or covers are missing or inadequately secured. Personnel could be seriously injured or machine damage may occur.
Removal Procedure
Illustration 3 g06465824When Diesel Exhaust Fluid (DEF) heated lines from the DEF injectors are removed for service, there is a possibility of small DEF quantity to be spilled over the DEF injector body.DEF forms a white, crystalline residue when allowed to dry. This reside can prevent