BEARING GP-SPROCKET 2781240 - Caterpillar

You must read and understand the warnings and instructions contained in the Safety section of this manual before performing any operation or maintenance procedures.Scheduled Oil Sampling (S O S)
Obtain Sample
To compliment a good preventive maintenance program, Caterpillar recommends using S O S at regular scheduled intervals to monitor the condition and maintenance requirements of your engine. Each oil sample should be taken when the oil is warm and well mixed to ensure that the sample is representative of the oil in the compartment.There are several methods used to obtain S O S samples.* Use a sampling gun inserted into the sump.* Use a valve installed for samples.* Use the drain stream when changing oil.Caterpillar recommends using the first or second method. If these methods are not feasible, then use the drain stream. When using the drain stream to obtain the oil sample, do not sample from the first or final draining. The oil at the beginning or end of the drain stream is not mixed well enough to be representative of the oil in the crankcase. Consult your Caterpillar dealer for complete information and assistance in establishing an S O S program for your engine.Engine Oil and Filter
Replace Oil and Filter
Use the chart below to establish the oil and filter change interval based on the engine oil sump capacity, minimum API oil classification and diesel fuel sulfur content of 0.5% or less. This chart establishes the basis for the oil change interval only which affects the following: * S O S sampling* engine oil change* oil filters* initial valve lash adjustmentAll other items are to be performed at 250 Service Hours.Drain the crankcase with the oil warm and the engine stopped to allow for the draining of waste particles that are suspended in the oil. As the oil cools, suspended waste particles will settle on the bottom of the crankcase and will not be removed with the draining oil.Failure to follow this recommended procedure would result in these waste particles being recirculated through your engine lubrication system with the new oil. 1. Remove the crankcase drain plug, open the crankcase drain valve and allow the oil to drain.2. Install the crankcase drain plug and tighten it to 70 14 N m (50 10 lb ft), or close the crankcase drain valve. 3. Use a 2P8250 Filter Wrench to remove the oil filter. Element with debris.4. Use a 4c5084 Service Tool to cut the oil filter element open. Spread pleats apart and inspect the element for metal debris. An excessive amount of debris in the oil filter element may be indicative of a pending failure.Use a magnet to differentiate between the ferrous and non-ferrous metals found in your oil filter element.Ferrous metals may indicate wear on the steel and cast iron parts of your engine.Non-ferrous metals may indicate wear on the aluminum parts of your engine, such as main and rod or turbocharger bearings.Due to normal wear, friction, etc., it is not uncommon to find small