RELAY AS 3T2170 - Caterpillar

Measuring Engine Oil Pressure
Work carefully around an engine that is running. Engine parts that are hot, or parts that are moving, can cause personal injury.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Table 1
Tools Needed
Part Number Part Name Quantity
1U-5470 Engine Pressure Group 1
Illustration 1 g00296486
1U-5470 Engine Pressure Group
The 1U-5470 Engine Pressure Group measures the oil pressure in the system. This engine tool group can read the oil pressure inside the oil manifold.Note: Refer to Special Instruction, SEHS8907, "Using the 1U-5470 Engine Pressure Group" for more information on the use of the 1U-5470 Engine Pressure Group.Note: The engine oil pressure can also be measured by the use of an electronic service tool. Refer to Troubleshooting for information on the use of the electronic technician.
Illustration 2 g01098032
(1) Pressure test location
Install the 1U-5470 Engine Pressure Group into oil gallery plug (1).
Start the engine. Run the engine with SAE 10W30 or SAE 15W40 oil. The information in