3. Apply cup grease to the outside diameter of the oil seal spacers, then slide them on the shafts.
Current engines use an oil slinger between the oil seal spacer and the shoulder on the camshaft, and between
the spacer and the end bearing on the balance shaft (in-line engine). Addition of the oil slinger improves
sealing by reducing the amount of oil in the area of the oil seals.
If oil slingers are installed on inline engines built prior to serial number 4D-944, check the distance from the
holes to the gasket flange (Fig. 1). If necessary, machine or grind the cover to provide sufficient clearance for
Figure 1. In-Line Engine Upper Front Cover
4. Install a woodruff key in each shaft.
5. Install the pulleys on the shafts.
6. Install and tighten the pulley retaining nuts to 300-325 lb ft (407-441 Nm) torque.