0345839 EVINRUDE HOSE, Regulator to oil return tube, 5 1/4 in. (133mm)

Introduction
Note: This Special Instruction can only be used for the machines with certain engine arrangements.The engine serial number will not change after this procedure is completed. The arrangement number of the engine will change.
Table 1
966 Wheel Loader Engine Arrangement Numbers    
Original     Engine Serial Number     New    
6I-2965     (S/N: 082; 13Z)     274-9907    
6N-3055     (S/N: 082; 13Z)     274-9908    
7E-0082     (S/N: 082; 6NC; 13Z)     274-9909    
9Y-1719     (S/N: 082; 6NC; 13Z)     274-9910    This Special Instruction provides the information in order to install a 3306 Engine Emissions Upgrade Group for a 966 Wheel Loader. Tier I emission levels can be achieved by replacing certain components on the existing unregulated engine. This Emissions Upgrade procedure should be completed at the time of the engine overhaul.When the Emissions Upgrade procedure has been completed, a label will be provided by Caterpillar. This label will verify that the Emissions Upgrade procedure has been performed for that individual 3306 Engine.In order to obtain an Emissions Upgrade Label, the following criteria must be met:
All procedures in this Special Instruction must be completed by a Caterpillar dealer. The Caterpillar dealership will be required to verify the Emissions Upgrade procedure.
The FLS/FTS and FARC must be set to the proper specifications.
The engine that receives the Emissions Upgrade procedure must be tested on a dynamometer and the engine must pass the requirements.
The service manager must also sign the emission upgrade validation form.
The emission upgrade validation form and the dynamometer report must be mailed to the Emissions Retrofit Solutions Group.
A SIMS entry must be completed verifying that this procedure has been completed.Note: A label will not be issued for the Emissions Upgrade procedure if all of the criteria has not been met.Return the component cores according to Reman Policies and Core Management, SELD0122. Refer to the following web site for more information.https://reman.cat.com
This Special Instruction does not include all of the procedures that can be found in your existing manuals. Refer to the original Service Manual, Parts Manual, and Operation and Maintenance Manual for more information.When you have completed this procedure, prepare the machine for service. Refer to the Operation and Maintenance Manual.Note: Do not perform any procedure in this Special Instruction until the information has been read and understood.ReferenceService Manual, Parts Manual, Operation and Maintenance Manual, Engine Reusability GuidelinesSafety
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.
Do not attempt to assemble this machine until you read and you understand the assembly instructions.Improper assembly procedures could result in injury or death.
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.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Welding on Electronically Controlled Engines
Proper welding procedures are necessary in order to avoid damage to electronic controls. Perform welding on the engine according to the following procedure.
Set the engine control to the "STOP" mode.
Turn OFF the fuel supply to the engine.
Disconnect the negative terminal from the battery.
Disconnect the engine's electronic components from the wiring harnesses: ECM, throttle actuator, actuator for the turbocharger compressor's bypass, fuel metering valve and sensors.
Prote