JET, Piston Oil Cooler

DESCRIPTION

DESCRIPTION

The 3.6 liter engine has three engine blocked-mounted oil jets (1) installed to cool the underside of each piston. The oil jets are fed by the main oil gallery, and spray upward on the bottom of the pistons and cylinder walls. Each set of jets has a check valve which closes below 2.5 bar (35 psi) to maintain ample oil pressure at idle. All three sets of oil jets are identical and seal to the engine block using an o-ring and fastener.

REMOVAL

REMOVAL

1. Remove the crankshaft (Refer to 09 - Engine/Engine Block/CRANKSHAFT - Removal) .

 
2. Remove the bolt (1) and the piston oil cooler jet(s) (2) from the engine block.
   
   

 
3. Remove and discard the O-ring seal (1) from the piston oil cooler jet(s).
   

 

INSTALLATION

INSTALLATION

1. Lubricate a new O-ring seal (1) with engine oil and install on the piston oil cooler jet(s).
   
   
   
   

   NOTE:

   Piston oil cooler jet for cylinders one/two shown. Piston oil cooler jets for cylinders three/four and five/six are similar.


 
2. Install the piston oil cooler jet(s) (2) into the engine block and tighten the retaining bolt (1) to 6 N·m (53 in. lbs.).

 
3. Install the crankshaft (Refer to 09 - Engine/Engine Block/CRANKSHAFT - Installation) .

 
4. If removed, install the oil filter and fill the engine crankcase with the proper oil to the correct level (Refer to 09 - Engine/Lubrication/OIL - Standard Procedure)

 
5. Fill the cooling system (Refer to 07 - Cooling - Standard Procedure) .

 
6. Connect the negative battery cable and tighten nut to 5 N·m (45 in. lbs.).

 
7. Run the engine until it reaches normal operating temperature. Check cooling system for correct fluid level (Refer to 07 - Cooling - Standard Procedure)