ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 001-067   Crankshaft Wear Sleeve, Rear

If the crankshaft seal has worn a groove in the crankshaft flange, a wear sleeve must be installed to prevent oil leakage.

WARNING  Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To reduce the possibility of arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last.

• Disconnect the batteries. Refer to Procedure 013-009 in Section 13.
• Disconnect the driveline and remove the transmission, if equipped. Refer to the OEM service manual.
• Remove the clutch and flywheel, if equipped. Refer to Procedure 016-005 in Section 16.
• Remove the flywheel housing. 016-006 in Section 16.
• Loosen the lubricating oil pan mounting capscrews four revolutions.

WARNING  Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To reduce the possibility of arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last.

NOTE: On some vessels, it can be necessary to lift the engine to replace the rear crankshaft seal.

• Disconnect the batteries. Refer to Procedure 013-009 in Section 13.
• Shut off the sea water supply valve. Refer to the OEM service manual.
• Remove the air crossover from the turbocharger to the aftercooler. Refer to Procedure 010-019 in Section 10.
• Remove the propeller driveshaft, marine gear and drive plate. Refer to the OEM service manual.
• Remove the starting motor. Refer to Procedure 013-020 in Section 13.
• Remove the flywheel. Refer to Procedure 016-005 in Section 16, if installed.
• Remove the flywheel housing. Refer to Procedure 016-006 in Section 16.
• Loosen the lubricating oil pan mounting capscrews four revolutions.

CAUTION  Use extreme care when releasing the oil pan gasket from the rear cover to prevent damage to the gasket. If the gasket is damaged, the oil pan must be removed and the gasket replaced. 007-025 in Section 7.

Remove the four lubricating oil pan mounting capscrews which secure the oil pan to the rear cover.

Insert a feeler gauge or shim stock between the rear cover and the oil pan gasket. Move the feeler gauge or the shim stock back and forth to release the gasket from the rear cover.

Remove the capscrews from the rear cover, and remove the cover from the crankshaft flange.

Remove the seal from the rear cover.

CAUTION  Do not nick or gouge the crankshaft with the chisel. If the crankshaft is damaged, it must be replaced.

Use a dull chisel that is only as wide as the wear sleeve.

Make one or two soft blows with a hammer to make chisel marks across the wear sleeve. This will expand the wear sleeve allowing the sleeve to be removed.

Clean the gasket surface of the cylinder block and rear cover.

Use a crocus cloth to remove any rust or other deposits from the crankshaft flange.

Use a clean cloth to clean the crankshaft flange.

Inspect the crankshaft flange for dirt or nicks.

Inspect the rear cover for cracks or other damage.

NOTE: Do not use any kind of lubricant to install the seal. The oil seal must be installed with the lip of the oil seal and the crankshaft clean and dry to make sure of proper oil sealing.

Clean any lubricant from the lip of the oil seal.

The combination crankshaft oil seal (A) wear sleeve (B) replacement kit for service usage is installed on the crankshaft as an assembly. The crankshaft rear oil seal should not be removed from the crankshaft rear seal wear sleeve.

NOTE: If the oil pan is installed, loosen the oil pan capscrews to allow clearance for rear cover and gasket clearance.

Install the rear cover and gasket.

The seal installation is being used to properly align the rear cover. Do not push or force the cover in any direction to prevent irregular seal lip position after seal installation.

The oil seal for a wet flywheel housing requires soap on the outside diameter of the seal case. Nothing is required on the outside diameter of the seal case for dry housings.

Use a Rear Seal/Sleeve Installer, Part Number 3824078, to install oil seal/wear sleeve assembly. Install two (2) threaded studs into the crankshaft capscrew holes.

Apply a small amount of clean 15W-40 engine oil to the crankshaft, threaded studs, and inside diameter of the crankshaft rear seal/wear sleeve installation tool.

Position the chamfered end of the wear sleeve (A) onto the end of the crankshaft (B).

Position the counterbore end of installation tool (C) over threaded studs and align with wear sleeve, perpendicular to the end of the crankshaft.

Install the washers (D) and nuts (E) onto the threaded studs.

Alternately tighten the nuts until the installation tool contacts the end of the crankshaft.

Do not exceed 1/2 revolution on each nut to prevent wear sleeve binding and irregular stretch.

Remove the installation tool and threaded studs.

Align the rear cover even with both sides of the oil pan rail on the cylinder block.

Tighten the rear cover capscrews.

The chart below shows the proper torque value when using either a 9.8 or a 10.9 grade bolt. The grade is embossed on the top of each bolt.

Apply Dri Lock™ to both part numbers below during installation. Dri Lock™ 205 is recommended. Use Dri Lock™ 204 or 211, when 205 is not available.

Install the four (4) rear oil pan mounting capscrews to the pan.

Tighten the oil pan capscrews. 007-025 in Section 7.

WARNING  Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To reduce the possibility of arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last.

• Install the flywheel housing. 016-006 in Section 16.
• Install the clutch and flywheel, if equipped. Refer to Procedure 016-005 in Section 16, if installed.
• Install the transmission and connect the driveline, if equipped. Refer to the OEM service manual.
• Connect the batteries. Refer to Procedure 013-009 in Section 13.
• Operate the engine and check for leaks.

WARNING  Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To reduce the possibility of arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last.

• Install the flywheel housing. Refer to Procedure 016-006 in Section 16.
• Install the flywheel. Refer to Procedure 016-005 in Section 16, if installed.
• Install the starting motor. Refer to Procedure 013-020 in Section 13.
• Install the drive plate, marine gear and propeller shaft. Refer to the OEM service manual.
• Install the air crossover from the turbocharger to the after cooler. Refer to Procedure 010-019 in Section 10.
• Connect the batteries. Refer to Procedure 013-009 in Section 13.
• Open the sea water supply valve. Refer to the OEM service manual.
• Operate the engine it idle for 5 to 10 minutes and check for leaks or loose parts.