1990 D21 Hardbody 2WD 24L SOHC Timing Chain Service Precautions
Front Cover Oil Seals
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Do not forget oil seal.
10. Install rubber plug. See: Cylinder Head Assembly/Service and Repair/Removal and Installation
11. Install oil pan. See: Engine Lubrication/Oil Pan/Service and Repair
12. Install oil pump and distributor driving spindle with new gasket in front cover.
Installing Oil Pump
a. Assemble oil pump and driving spindle, aligning punchmark on driving spindle with oil hole.
Distributor Driving Spindle
b. Make sure that driving spindle is set as shown in image.
13. Install distributor.