M11 Series – Service 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 filter for your engine. Refer to the Operation and Maintenance Manual, M11 Plus Series Engines, Bulletin 3666143 for correct oil filter.

CAUTION  The lack of lubrication during the delay until the filter is pumped full of oil at startup 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 Cummins Engine Oil Recommendations, Bulletin 3810340. The filter capacity is 2.6 liters [0.7 gal].

Apply a light film of 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.

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.

Operate the engine at idle speed for 3 minutes to inspect for leaks at the filter(s).