ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 001-023   Crankshaft Seal, Front

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 battery. Refer to Procedure 013-009 in Section 13.
• Remove the belt guard, if equipped. Refer to Procedure 008-001 in Section 8.
• Remove the drive belt. Refer to Procedure 008-002 in Section 8.
• Remove the vibration damper, if installed. Refer to Procedure 001-051 in Section 1.
• Remove the vibration damper. Refer to Procedure 001-052 in Section 1.

CAUTION  The seal carrier must be removed as shown. Using other areas can cause damage to the front cover.

Remove the mounting nuts from the mounting studs.

Remove the front crankshaft seal carrier.

Remove the oil seal from the carrier. Drive the oil seal from the back side of the carrier toward the front side of the carrier, while supporting the carrier.

Clean the gear cover seal bore and the crankshaft surface of all oil and seal residue.

Inspect the crankshaft for excessive wear.

NOTE: If the crankshaft has excessive wear, a service wear sleeve is available. Refer to Procedure 001-025 in Section 1.

Leave the plastic pilot installation tool in the lubricating oil seal.

Position the seal on the service tool, Part Number 3824499, with the lubricating oil seal dust lip facing outward.

NOTE: Properly support the carrier lubricating oil seal flange to prevent damage to the lubricating oil seal and carrier.

Press the lubricating oil seal into the carrier from the back side of the carrier toward the front side of the carrier.

Press the lubricating oil seal until the seal is flush on front of the carrier.

Apply a bead of sealant, approximately 4 mm [0.16 in] thick and 4 mm [0.16 in] wide, around the inside of the seal carrier, between the mounting holes and the seal.

Apply a bead of sealant, approximately 4 mm [0.16 in] thick and 4 mm [0.16 in] wide, around all stud seams on the front cover.

Install the seal carrier on the front gear cover.

Remove the plastic installation tool.

Starting with the upper left stud (as shown in the graphic), tighten the carrier mounting nuts in a star pattern.

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 vibration damper, if installed. Refer to Procedure 001-051 in Section 1.
• Install the vibration damper, if installed. Refer to Procedure 001-052 in Section 1.
• Install the drive belt. Refer to Procedure 008-002 in Section 8.
• Install the belt guard, if equipped. Refer to Procedure 008-001 in Section 8.
• Connect the battery. Refer to Procedure 013-009 in Section 13.
• Operate the engine and check for leaks.