M11 Plus Series Engines Operation and Maintenance Manual – 007-013   Lubricating Oil Filter (Spin-On)

A combination oil filter is used on the M11 engine. The upper section of the filter contains the full flow filter element while the lower section contains the bypass element.

During normal engine operation, oil circulates through the full flow section of the combination filter and into the main oil rifle. If the full flow section becomes plugged to the point that a 655 kPa [95 psi] pressure difference exists across the filter, the bypass valve opens in the oil filter head and routes unfiltered oil to the main oil rifle.

NOTE: Engine oil pressure will not decrease as restriction in the full flow oil filter increases.

Clean the area around the lubricating oil filter head.

Use oil filter wrench, Part Number 3375049, or equivalent, to remove the filter.

Clean the gasket surface of the filter head.

The o-ring can stick on the filter head. Make sure it is removed.

Use the correct oil for your engine.

Refer to Procedure 018-002 (Lubricating Oil Recommendations and Specifications) in Section V for correct lubricating oil specifications.

CAUTION  The lack of lubrication caused by an empty oil filter is harmful to the engine.

CAUTION  Mechanical overtightening of the filter can distort the threads or damage the filter element seal.

Fill the filter with clean oil. Choose the correct oil for your operating climate. Refer to Procedure 018-024 (Cummins/Fleetguard® Filter Specifications) in Section V.

Apply a light film of clean engine oil to the gasket sealing surface before installing the new filter.

Install the filter on the filter head. Tighten the filter until the gasket contacts the filter head surface.

Use oil filter wrench, Part Number 3375049, or equivalent, to tighten the filter to the specifications supplied with the filter.