0319291 JOHNSON CHOKE KNOB

Introduction
This Special Instruction contains the procedure to install engine enclosure duct group on machines listed above. The engine enclosure door ducts are intended for machines in dredging applications, to prevent sand and seawater from being drawn through the enclosure doors and plugging the radiator.Important Safety Information
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 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. A person must be alert to potential hazards. This person should also have the necessary training, skills, and tools in order 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 that might involve a potential hazard. Therefore, the warnings in this publication and the warnings that are on the product are not all inclusive. If the tools, the procedure, the work method, or your actions are not recommended by Caterpillar, ensure that the tools and your actions are safe for you and for 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.
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.
Parts Required
Table 1
Required Parts List    
Item     Qty     Part     Description    
1     1     478-9006     Duct As    
2     16     8T-4136     Bolt    
3     16     344-5675     Nut    
4     32     7X-7729     Washer    
-     1     478-9007     Duct As    Procedure to Install Enclosure Duct Group
Illustration 1 g03873696
Left side view of machine
Illustration 2 g03873607
View of area A (B) 20 mm (0.8 inch) (C) 25 mm (1.0 inch)
Lay out enclosure duct group locations on engine enclosure doors as per dimensions shown in Illustration 2.
Mark eight mounting hole locations from duct group to door.
Illustration 3 g03873608
Drill eight mounting holes of dimension 12.5 mm (0.49 inch) (D) at marked places in the engine enclosure door. Refer to Illustration 3.
Illustration 4 g03873609
Fasten duct assembly (1) to engine enclosure door using bolt (2), nut (3), and washer (4). Refer to Illustration 4.
Repeat Step 1 through Step 4 to install other duct assembly at opposite side.