Manual de servicio

Caterpillar 3126B HEUI Engines Service Manual. The Caterpillar 3126B HEUI Engine introduces a new era of the diesel engine in the bus industry using the medium duty diesel engine. The basic engine takes advantage of the 3116′s best features and years of experience and combines this with an electronically controlled fuel system, larger displacement, and other new features to produce the 3126B. The fuel delivery system is controlled entirely by the Electronic Control Module, hereafter called the ECM. The actual delivery of the fuel into the combustion chambers is accomplished by the Hydraulic Electronic Unit Injector system (HEUI), which will be discussed later. The ECM will identify short/open sensors or operating conditions out of the normal range. It will alert the driver/mechanic through the use of failure codes that are displayed on the dash. At this point be advised that all subjects related to the operation and maintenance of the engine are covered in the 3100 HEUI manual provided with the chassis manual. Therefore no attempt is made herein to cover engine repairs. Service and operating instructions found in the Caterpillar manuals should be followed. When in need of information concerning the engine, contact your local Caterpillar dealer or distributor who is fully qualified and capable of handling all engine warranty and service repairs. The ECM controls its various functions through signals from the
following sensors:
Injection Actuation Pressure
Turbo Boost Pressure
Engine Speed
Engine Timing
Coolant Temperature
Air Intake Temperature
Throttle Position
Vehicle Speed
The ECM provides total electronic control of the start and duration of fuel injection. Data furnished by the sensors enable the ECM to control the fuel injected into each cylinder, which optimizes performance related to Normal and Cold weather starting, warm up, emissions, noise, fuel economy, and driveability. Top Engine Limit The ECM controls the top rpm of the engine, which is 2640 set at the factory, by limiting the fuel to the injectors. The engine does not have a mechanical governor. Start-Up and Emission Control White smoke is reduced by controlling injection timing and delivery during cold operation and acceleration. The ECM uses various sensor inputs to calculate timing and delivery that will not produce smoke.

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Caterpillar 3116 and 3126 Marine Engine Operation & Maintenance Manual. The message that appears under the warning explains the hazard and can be either written or pictorially presented. Operations that may cause product damage are identified by “NOTICE” labels on the product and in this publication. Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The warnings in this publication and on the product are, therefore, not all inclusive. If a tool, procedure, work method or operating technique that is not specifically recommended by Caterpillar is used, you must satisfy yourself that it is safe for you and for others. You should also ensure that the product will not be damaged or be made unsafe by the operation, lubrication, maintenance or repair procedures that you choose. The information, specifications, and illustrations in this publication are on the basis of information that was available at the time that the publication was written. The specifications, torques, pressures, measurements, adjustments, illustrations, and other items can change at any time. These changes can affect the service that is given to the product. Obtain the complete and most current information before you start any job. Caterpillar dealers have the most current information available. For a list of the most current publication form numbers available, see the Service Manual Contents Microfiche, REG1139F.

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caterpillar 3116 and 3126 Marine engines Maintenance manual. Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The warnings in this publication and on the product are, therefore, not all inclusive. If a tool, procedure, work method or operating technique that is not specifically recommended by Caterpillar is used, you must satisfy yourself that it is safe for you and for others. You should also ensure that the product will not be damaged or be made unsafe by the operation, lubrication, maintenance or repair procedures that you choose. The information, specifications, and illustrations in this publication are on the basis of information that was available at the time that the publication was written. The specifications, torques, pressures, measurements, adjustments, illustrations, and other items can change at any time. These changes can affect the service that is given to the product. Obtain the complete and most current information before you start any job. Caterpillar dealers have the most current information available. For a list of the most current publication form numbers available, see the Service Manual Contents Microfiche, REG1139F.Caterpillar equipment and replacement parts that are shipped from Caterpillar are asbestos free. Caterpillar recommends the use of only genuine Caterpillar replacement parts. Use the following guidelines when any replacement parts that contain asbestos or debris that contains asbestos are handled. The asbestos in these components is usually sealed or bonded in a resin. Handling these materials normally is not hazardous unless airborne dust that contains asbestos is generated. Do not inhale dust that might be generated when components that contain asbestos fibers are handled. Inhaling this dust can be hazardous to your health.

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caterpillar 3406 Truck Engine Brake Installations manual PDF

caterpillar 3406 Truck Engine Brake Installations manual. Identify the engine model. The P-36 Engine Brake is designed for 3406 applications. Examine the valve cover. An identification tag is attached to the valve cover showing all the necessary information. NOTE 1: Early 3406 Engines prior to Ser.# 92U17820 require special fuel lines and may require a special turbo to manifold crossover pipe if equipped with a low mount turbo. These items are available through Caterpillar Distributors. NOTE 2: The P-36 kit is packaged as a basic kit without most wiring and switch components. An electrical group must be ordered separately and will have the items necessary for the specific application. i.e. Mechanical, PEEC II or PEEC III.The model P-36 uses a unique distribution system that allows a free flow of oil between the master and the slave pistons. (All drillings between master and slave radiate 360°(around the centre of the brake housing to a distributor body). This free flow of oil means there is less restriction to the opening and closing of the engine exhaust valves during engine brake operation. This translates into a more precise engine exhaust valve operation and less tendency to float, particularly at higher RPM’s, timing and full stroke are important: the exhaust valves are operated by the engine brake at a rate of 17.5 times per second and open only .070. The result is higher turbo pressure, yielding higher braking power. Moreover, with the exceptionally long stroke of the master piston (.400 on the Cat as opposed to .140 on the Cummins) special care must be taken to align the housings with the rocker arm adjusting screws and prevent distortion of the housing that the Cummins units are not subject to. Therefore, a number of mounting changes have been made over conventional design to ensure long life and minimum wear.

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General Service and Repair Information for Caterpillar Machines.Proper repair is important to the safe operation and the reliable operation of this machine. This document outlines basic recommended procedures. Some of the procedures require special tools, devices, or work methods. Before you perform any repairs or before you perform any maintenance, read all safety information. Understand all safety information before you perform any repairs or before you perform any maintenance. Safety information can be found in this document and the following documents for your machine:
• Operation and Maintenance Manual
• Testing and Adjusting Manual
• Disassembly and Assembly Manual
• Warning labels that are located on the machine and engine
If these hazard warnings are not heeded, bodily injury or death could occur to you or other persons.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 to perform these functions properly. Improper operation, lubrication, maintenance or repair of this product can be dangerous and could result in injury or death. Do not operate or perform any lubrication, maintenance or repair on this product, until you have read and understood the operation, lubrication, maintenance and repair information. Safety precautions and warnings are provided in this manual and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons. The hazards are identified by the “Safety Alert Symbol” and followed by a “Signal Word” such as “DANGER”, “WARNING” or “CAUTION”. The Safety Alert “WARNING” label is shown below.

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