GEAR AS-IDLER 9Y1981 - 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.All PM Level 1 maintenance is to be performed at the intervals specified in the Maintenance Management Schedule for the power rating of the engine being maintained.Before proceeding with PM Level 1 maintenance, perform all Daily maintenance requirements.Scheduled Oil Sampling (S O S)
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.Obtain Sample
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 crankcase.There are two methods recommended to obtain S O S samples from the engine crankcase. * Use a sampling valve installed on the engine for samples.* Use a sampling gun inserted into the sump.Caterpillar recommends using one of the above methods. If these methods are not feasible, then use the drain stream method when changing oil. 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. Refer to "How to Take a Good Oil Sample," Form PEHP6001 for a step-by-step explanation if using this method of sampling crankcase oil.Consult your Caterpillar dealer for complete information and assistance in establishing an S O S program for your 3406B truck engine.Engine Oil and Filter
The vehicle must be parked on a level surface to perform this maintenance procedure.
Change Oil
Refer to the Lubricant Specifications section of this manual for the recommended oil to use for this engine.As the oil cools, suspended waste particles will settle on the bottom of the crankcase or oil pan and will not be removed with the draining oil. 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.Failure to follow this recommended procedure would result in these waste particles being recirculated through your engine lubrication system with the new oil. 1. After the engine has been run at normal operating water temperature, STOP the engine. Remove the crankcase drain plug and allow the oil to drain.An oil sample for S O S (Scheduled Oil Sampling) analysis should have been obtained from the S O S valve or by a sample from the crankcase drain at this time.2. Install the crankcase drain plug and tighten it to 50 10 lb ft (70 14 N m).Change Filter
1. Use a 2P8250 Filter Wrench to remove the oil filter and optional bypass filter (if equipped).
Element with debris.2. Use a 6V7905 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