ROCKER ARM AS 9Y1741 - Caterpillar

Personal injury or death can result from improper troubleshooting and repair procedures.The following troubleshooting and repair procedures should only be performed by qualified personnel familiar with this equipment.
Refer to Safety Section, "Generator Isolating for Maintenance" for information regarding the procedure to safely isolate the generator.A visual inspection should be initially directed at the areas that are most prone to damage and deterioration. The most prone areas to damage and deterioration are listed below:
Ground Insulation. Ground insulation is insulation that is intended to isolate components that are carrying current from components that are not carrying current.
Support Insulation. Support insulation is usually made from one of the following items: a compressed lamination of fibrous materials, polyester, or felt pads that have been impregnated with various types of bonding agents.There are many different types of damage that can occur in these areas. Several of the different types of damage are listed below:Thermal Aging - Thermal aging can cause the degradation of insulation or the deterioration of insulation. An examination of the coils may reveal that the insulation has expanded into the ventilation ducts. This is the result of a loss of bond which will cause the insulation material to separate. The insulation material could also separate from the conductors on the windings.Abrasion - The surfaces of coils and the surfaces of connectors may be damaged by abrasion. These surfaces may also be damaged by contamination from other sources. An example of these sources would be chemicals or abrasive substances.Cracking - Cracking of insulation may result from mechanical stress. The structure that is used to brace the stator winding will become loose if the problem is not corrected. Further mechanical damage or electrical damage may also result.Erosion - Erosion can be caused when foreign substances rub against the insulation that is on the surface of the coil . The items that follow should be checked in order to ensure that the items are free of debris: the rain water drains, the air inlet duct screen, the fuel tank vent, the emergency fuel tank vent and the interior of the enclosure. This will ensure proper performance and safety of the power package.The personnel doors and the roof should be checked in order to make sure that the seals are working properly. The seals should be free of cracks and the seals should show no weathering.Inspect the Engine for Leaks and for Loose Connections
A walk-around inspection should only take a few minutes. When the time is taken to perform these checks, costly repairs and accidents can be avoided.For maximum engine service life, make a thorough inspection of the engine compartment before starting the engine. Look for items such as oil leaks or coolant leaks, loose bolts, worn belts, loose connections and trash buildup. Make repairs, as needed:
The guards must be in the proper place. Repair damaged guards or replace missing guards.
Wipe all caps and plugs before the engine is serviced in order to reduce the chance of system contamination.
For any type of leak (coolant,