M11 Series – Service Manual – 007-015   Lubricating Oil Filter Head

Remove the oil filter.

Refer to Procedure 007-013.

Remove the turbocharger oil supply line from the oil filter head.

Remove the turbocharger oil drain line from the turbocharger. Remove the two support brackets from the filter head.

Drain the cooling system.

Refer to Procedure 008-018.

Remove the lubricating oil cooler.

Refer to Procedure 007-003.

Remove the nine filter head capscrews and the filter head.

Remove the gaskets.

Use snap ring pliers to remove the snap ring in the thermostat bore.

Remove the lubricating oil thermostat.

CAUTION  To avoid personal injury, use care while removing the bypass valve. The valve spring is under compression. Wear face and eye protection.

Remove the snap ring from the bypass valve bore.

Remove the washer, spring, and bypass valve.

Remove the remaining plugs and fittings from the filter head.

Clean the filter head and cylinder block gasket surfaces.

Use solvent to clean the filter head. Dry with compressed air.

Inspect for cracks or other damage.

Inspect the lubricating oil thermostat.

Refer to Procedure 007-039.

Inspect the thermostat and bypass valve for cracks or other damage.

If the bypass valve or thermostat are damaged, they

must
be replaced.

Install the bypass valve into the filter head. The notched end of the valve (1)

must face the engine side of the filter head.

Insert the spring into the bore. Check to be sure the spring is properly located over the notched end of the valve (1).

CAUTION  The valve spring must be compressed to install the snap ring. To avoid personal injury, wear face and eye protection

Place the washer on top of the spring.

Using snap ring pliers, install the snap ring into the groove inside the bore.

Insert the oil thermostat into the filter head. The beveled end of the thermostat goes in first.

Install the snap ring into the groove using snap ring pliers.

Install the following fittings into the filter head:

Use a new gasket and install the filter head to the cylinder block.

Install the nine capscrews and tighten.

Install the lubricating oil cooler.

Refer to Procedure 007-003.

Install the turbocharger oil supply and drain lines and support brackets.

Install the lubricating oil filter.

Refer to Procedure 007-013.

Operate the engine at idle speed for 3 minutes to inspect for leaks at the filter head.

NOTE: Engine oil pressure

must be indicated on the gauge within 15 seconds after starting. If oil pressure is

not registered within 15 seconds, shut off the engine immediately to avoid engine damage. Confirm the correct oil level in the oil pan.