Centinel System – Repair Manual – 007-007   Lubricating Oil Cooler Element

Remove the lubricating oil cooler. Refer to Procedure 007-003.

Remove the element from the lubricating oil filter head.

Discard the gaskets.

Remove the elements from the lubricating oil filter head.

Remove the oil cooler tube.

Discard the gaskets.

CAUTION  Do not damage the oil cooler tube when cutting the vibration isolators to remove them. Engine damage can occur.

Remove the vibration isolators by cutting a slit in them.

Discard the isolators.

WARNING  When using solvents, acids, or alkaline materials for cleaning, follow the manufacturer’s recommendations for use. Wear goggles and protective clothing to reduce the possibility of personal injury.

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

CAUTION  Do not allow dirt or foreign material to enter oil passages in the cooler element when cleaning. Rod bearing failures can be caused if debris is introduced into the lube cooler housing oil passages.

Use solvent to clean the element.

Remove all old gasket material from the element.

Dry with compressed air.

Inspect the oil cooler tube for cracks. Replace the cooler tube if cracks are found.

NOTE: An oil cooler element pressure test plate can be constructed from a thin aluminum plate that allows the oil cooler element to be mounted and air pressure applied to the element inlet. An oil cooler pressure test tool does not exist.

Install the oil cooler element and gaskets to the pressure test plate.

Apply 689 kPa [100 psi] regulated shop air.

Inspect the test plate and gaskets for leaks.

Submerge in a tank of room temperature water.

Replace the oil cooler element if a steady stream of bubbles is observed from the element.

Slow forming bubbles (less than one rising to the surface of the water every 30 seconds) do not constitute a leaking oil cooler element.

Do not replace non-leaking oil cooler elements. If no oil cooler element leaks are found install the existing oil cooler element with new gaskets and new capscrews.

To clean contaminated lubricating oil from the engine, refer to Procedure 007-037.

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

CAUTION  Do not allow dirt or foreign material to enter the oil cooler element passages when cleaning. Engine damage can result.

Remove the cooler element from the tank.

Remove the test equipment and dry with compressed air.

CAUTION  The single-element oil cooler assembly is for use only on ISX1 and ISX2 engines. Engine oil overheating can result if used on ISX3, and Signature 600 engines.

Install non-leaking lubricating oil cooler elements onto the lubricating oil filter head with new gaskets and capscrews.

Assemble the cooler element(s) to the housing with the following parts from the engine oil cooler kit.

Install and tighten the capscrews.

Install the lubricating oil cooler assembly. Refer to Procedure 007-003.

NOTE: The vibration isolators must be cut to allow assembly over the cooler tube. Make sure the vibration isolators are oriented so the slit is not tightened against the oil cooler housing or the oil cooler elements.

Install two new vibration isolators onto the oil cooler tube as shown.

Install new gaskets.

Install the oil cooler tube.

Re-install non-leaking lubricating oil cooler elements onto the lubricating oil filter head.

Install new capscrews and tighten.

Install the lubricating oil cooler. Refer to Procedure 007-003.

Operate the engine to normal operating temperature and check for leaks.