0434521 JOHNSON FUEL PUMP ASSY.

Introduction
This Special Instruction contains the removal and installation procedure for dosing pump unit on certain marine IMO III engines with aftertreatment.Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.Reference Section
Reference: Specifications, SENR3130, "Torque Specifications"Safety Section
Do not perform any procedure in this Special Instruction until you have read this Special Instruction and you understand this information. 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 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.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.Ensure that the product will not be damaged or the product will be made unsafe by the operation, lubrication, maintenance, or the repair procedures.
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.
Failure to follow all safety guidelines prescribed in this document and by governing authorities and regulatory agencies may result in severe injury or death of personnel or machine damage.
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 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.
Observe the safe working load limits of all lifting and blocking devices and keep a safe distance from suspended/blocked loads. Personnel may be seriously injured or killed by falling loads.
The Electronic Control Module produces high voltage. To prevent personal injury make sure the Electronic Control Module is not powered and the unit injector solenoids are disconnected.
Required Parts
Table 1
Required Parts
Qty Part Number Part Name
1 570-9363 Tank
1 564-6004 Support As
6 326-2344 Boss
6 342-9922 Bolt
4 8T-7547 Bolt
4 7X-0818 Bolt
4 7X-0579 Hard Washer
1 8T-9655 Isolation Mount
1 516-2693 Manifold
4 8T-3844 Bolt
4 9X-8256 Washer
1 396-6500 Electronic Control Gp
1 8T-4189 Bolt
1 4D-7388 Clip
1 6I-0846 Bolt
1 3E-5239 Relay As
1 389-2653 DEF Manifo