Cummins ISX11.9 CM2250 – Service Manual 001-117   Front Cover Seal Plate

WARNING  To reduce the possibility of personal injury, avoid direct contact of hot oil with your skin.

WARNING  Some state and federal agencies have determined that used engine oil can be carcinogenic and cause reproductive toxicity. Avoid inhalation of vapors, ingestion, and prolonged contact with used engine oil. If not reused, dispose of in accordance with local environmental regulations.

• Drain the lubricating oil. Refer to Procedure 007-037 in Section 7.
• Remove the lubricating oil pan and gasket. Refer to Procedure 007-025 in Section 7.
• Remove the cooling fan drive belt. Refer to Procedure 008-002 in Section 8.
• Remove the crankshaft pulley and vibration damper. Refer to Procedure 001-022 in Section 1.
• Remove the front crankshaft seal. Refer to Procedure 001-023 in Section 1.

Remove the capscrews and front cover seal plate.

Remove and discard the seal from the groove in the front cover seal plate.

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  When using a steam cleaner, wear protective clothing and safety glasses, or a face shield. Hot steam can cause serious personal injury.

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

Use steam or solvent to clean the crankshaft seal carrier and seal carrier mounting surface on the front of the cylinder block.

Dry with compressed air.

Use a crocus cloth or emery cloth to remove any rust or other deposits from the crankshaft flange. Visible scratches can result in seal leakage.

Use a clean cloth and a safety solvent, Part Number 3823717 or equivalent, to clean the crankshaft flange and to remove all traces of oil film.

Inspect the front cover seal plate for signs of leakage or other damage.

Inspect the seal groove of the front cover seal plate for debris or damage that would create a leak path.

Replace the front cover seal  plate if it is damaged.

Inspect the crankshaft seal carrier for cracks or other damage. If the carrier is cracked, it must be replaced.

Inspect the inner diameter of the seal carrier for scratches, nicks, burrs, or other damage.

Remove any burrs with a fine grade abrasive pad such as Scotch-Brite™ 7448, or crocus cloth.

Clean off any dust or debris released while using the abrasive pad.

If the scratch or burr can still be felt with a fingernail, replace the seal carrier.

Install a new seal into the groove on the back of the front cover seal plate.

Make sure the tabs on the seal mate with the notches in the grooves and press the seal into place.

Install the front cover seal plate and the eight mounting capscrews onto the cylinder block.

Tighten the capscrews just enough to hold the front cover seal plate in position.

NOTE: Make sure the two sealing feet at the bottom of the seal are installed and seated correctly.

Use crankshaft oil seal driver (1), Part Number 4918991, to align the front cover seal plate with the crankshaft.

Install the seal driver onto the crankshaft flange and into the bore of the front cover seal plate.

Use a non-metallic hammer to align the front cover seal plate with the oil pan flange, so it is parallel (flush) to the cylinder block pan rail within 0.127 mm [0.005 in].

Tighten the capscrews in the sequence illustrated.

Remove the crankshaft oil seal driver, Part Number 4918991.

WARNING  This component or assembly weighs greater than 23 kg [50 lb]. To prevent serious personal injury, be sure to have assistance or use appropriate lifting equipment to lift this component or assembly.

• Install the front crankshaft seal. Refer to Procedure 001-023 in Section 1.
• Install the crankshaft pulley and vibration damper. Refer to Procedure 001-022 in Section 1.
• Install the cooling fan drive belt. Refer to Procedure 008-002 in Section 8.
• Install the lubricating oil pan and gasket. Refer to Procedure 007-025 in Section 7.
• Fill the engine with lubricating oil. Refer to Procedure 007-037 in Section 7.
• Operate the engine to normal operating temperature and check for leaks.