Mercury 90-863160

OILDYNE TRIM PUMP
SERVICE MANUAL NUMBER 28
90-863160 MAY 2000 Page 5A-37
Pump Shaft Oil Seal Replacement
1. Remove the pump attaching screws with a hex lobular socket or standard 3/16 in.
(5 mm) socket.
2. Remove pump. Do NOT loosen or remove the pump assembly screws.
70870
a
b
a-Screw
b-Pump Assembly Screw
3. Remove the oil seal by prying out with a screwdriver.
50371
a
a-Oil Seal
4. Remove and replace the O-rings on the pump base if they are worn.
5. Install a new seal with the lips toward the pump. The oil seal can be pressed in by hand.