Filling And Bleeding - Mercury MerCruiser D2.8L D-Tronic Service Manual

MAINTENANCE

Filling and Bleeding

1. With engine stopped, center sterndrive unit.
2. Remove dipstick from power steering reservoir.
IMPORTANT: Use only Power Trim and Steering Fluid or Dexron III automatic
transmission fluid (ATF) in power steering system.
3. Add fluid to bring the fluid level up to full cold mark on dipstick.
IMPORTANT: All air must be removed from the system or fluid in pump may foam
during operation and be discharged from pump reservoir. Foamy fluid also may
cause power steering system to become spongy, which may result in poor boat
control.
4. With engine stopped, turn the steering wheel at a moderate rate, to end of travel in each
direction, pausing a few seconds at end of travel. Do this a minimum of 5 complete
cycles, then recheck fluid level and add fluid, if necessary.
5. Install dipstick.
6. Supply cooling water to water inlet.
7. Start engine and operate at IDLE until engine reaches normal operating temperature.
During this time, slowly turn steering wheel to end of travel in each direction several
times.
IMPORTANT: Sterndrive unit must be centered and power steering fluid must be hot
to accurately check fluid level.
8. With engine stopped, center sterndrive unit. Remove dipstick fluid reservoir. Allow any
foam in reservoir to disperse, then check fluid level. Do NOT overfill.
9. If fluid is still foamy in Step 8., repeat Steps 6. and 7. until fluid does not foam and level
remains constant.
10. Install dipstick.
Page 1B-48
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002