3046 Engine for Caterpillar Built Machines Engine Oil Pressure - Test Caterpillar


Engine Oil Pressure - Test
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Table 1
Required Tools    
Part Number     Part Description     Qty    
1U-5470     Engine Pressure Group     1    

An oil pressure gauge that has a defect can indicate low oil pressure.

The 1U-5470 Engine Pressure Group can be used to check engine oil pressure.




Illustration 1g00296486

1U-5470 Engine Pressure Group

The 1U-5470 Engine Pressure Group has a gauge that measures the oil pressure in the engine. Refer to Special Instruction, SEHS8907 for more information on using the 1U-5470 Engine Pressure Group . The information is included in the tool group.

  1. Ensure that the engine is filled to the correct oil level.

  1. Connect the 1U-5470 Engine Pressure Group to a pressure tap location for engine oil.

  1. Operate the engine. Allow the engine to obtain normal operating temperature.

  1. Keep the oil temperature constant with the engine at the rated rpm. Read the pressure gauge.

  1. Refer to Table 2 in order to determine if the engine oil pressure is in tolerance.

Table 2
Oil Pressure (1)    
Oil Pressure at 1500 rpm    
300 to 500 kPa (44 to 73 psi)    
Oil Pressure at Idle    
100 kPa (15 psi)    
( 1 ) The oil temperature must be 60 ° to 88 °C (140 ° to 158 °F).

Find the cause of the problem and correct the problem if the results of the test do not fall within the pressure range in Table 2. Engine failure or a reduction in engine life can be the result if engine operation is continued with oil pressure outside this range.

Note: A record of engine oil pressure at regular intervals can be used as an indication of possible problems of the engine. A record of engine oil pressure at regular intervals can also be used as an indication of possible damage to the engine. The engine should be inspected and the problem should be corrected if there is a sudden increase or a sudden decrease of 70 kPa (10 psi) in oil pressure.

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