20 Product Information Section Model Views Engine Cooling and Lubrication When auxiliary devices, accessories, or consumables (filters, additives, catalysts, etc) which are made by other manufacturers are used on Caterpillar products, the Caterpillar warranty is not affected simply because of such use. The cooling system consists of the following components: Centrifugal pump that is driven by belts Water temperature regulator which regulates the engine coolant temperature However, failures that result from the installation or use of other manufacturers’ devices, accessories, or consumables are NOT Caterpillar defects. Therefore, the defects are NOT covered under the Caterpillar warranty.
Oil cooler and radiator which incorporates a shunt system Welding and Caterpillar Electronic Engines The engine lubricating oil that is supplied is cooled. The engine lubricating oil is also filtered. Bypass valves provide unrestricted flow of lubrication oil to the engine components during the following conditions: NOTICE Because the strength of the frame may decrease, some manufacturers do not recommend welding onto a chassis frame or rail. Consult the OEM of the equipment or your Caterpillar dealer regarding welding on a chassis frame or rail.
High oil viscosity Plugged oil cooler or plugged oil filter elements (paper cartridge) Engine Service Life To help avoid damage to the electronic controls, proper welding procedures are necessary. Before welding on an engine that is equipped with an electronic engine, observe the following precautions: Engine efficiency and maximum utilization of engine performance depend on the adherence to proper operation and maintenance recommendations. In addition, use recommended fuels, coolants and lubricants. Use the Operation and Maintenance Manual as a guide for required engine maintenance. 1. Turn off the engine. Place the key start switch in the OFF position. 2.
If the machine has a battery disconnect switch, open the switch. Otherwise, disconnect the negative battery cable from the battery of the vehicle. Expected engine life is generally predicted by the average power that is demanded. The average power that is demanded is based on fuel consumption of the engine over a period of time. Reduced hours of operation at full throttle and/or operating at reduced throttle settings result in a lower average power demand. Reduced hours of operation will increase the length of operating time before an engine overhaul is required. For more information, refer to the Operation and Maintenance Manual, “Overhaul Considerations” topic (Maintenance Section).
NOTICE Do not ground the welder to electrical components such as the ECM or sensors. Improper grounding can cause damage to the drive train bearings, hydraulic components, electrical components, and other com- ponents. Clamp the ground cable from the welder to the com- ponent that will be welded. Place the clamp as close as possible to the weld. This will help reduce the pos- sibility of damage. Aftermarket Products and Caterpillar Engines NOTICE In order to maximize fuel system life and prevent premature wear out from abrasive particles in the fuel, a two micron absolute high efficiency fuel filter is required for all Caterpillar Electronic Unit Injectors.
Caterpillar High Efficiency Fuel Filters meet these requirements. Consult your Caterpillar dealer for the proper part numbers. 3. Clamp the ground cable from the welder to the component that will be welded. Place the clamp as close as possible to the weld. 4. Protect wiring harnesses from welding debris and spatter. Use proper welding procedures.