ELBOW 3R4820 - Caterpillar

Removal Procedure
Do not remove the priority valve while the engine is hot. Hot oil can cause burns.
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, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Allow the engine to cool after shutdown. Allow the volume of engine oil above the priority valve, the engine oil filters, and the engine oil cooler to drain to the engine oil pan.
Illustration 1 g00555876
Disconnect tube assembly (3) from elbow (2). Drain the engine oil from the elbow. Open the drain valves on the engine oil filters.
Remove elbow (2) from tube (1).
Remove elbow (4) from tube (5) and the priority valve. Remove the bolt that holds the bracket for tube (5) to the priority valve.
Illustration 2 g00555879
Remove priority valve (6) from the front housing.
Illustration 3 g00555912
Remove O-ring seals (7) from the front housing.