Power Steering; Poor, Erratic Or No Assist - Mercury MerCruiser D2.8L D-Tronic Service Manual

SERVICE MANUAL NUMBER 22

Power Steering

Poor, Erratic or No Assist

1. Drive belt
2. Low fluid level
3. Air in system
4. Leaking hoses
5. Steering cables and/or steering helm
6. Binding in sterndrive unit
7. Restriction in hydraulic hoses
8. Control valve not positioned properly,
not balanced properly, or the mounting nut
is loose
9. Mounting bracket adjusting screw
loose or mounting tube is loose
10. Faulty pump
11. Worn piston ring or scored housing
bore in cylinder
12. Leaking valve body or loose fitting
spool
90-860074--1 FEBRUARY 2002
Cause Special Information
1. Worn, broken or out of adjustment
3. Air leak in lines, pump, or air from
installation. Refer to SECTION 9A for
bleeding procedure.
4. Refer to SECTION 9A for bleeding
procedure.
5. Cable or helm partially frozen from
corrosion or rust; cable over-lubricated;
improper cable installation
6. Refer to appropriate Mercury
MerCruiser Sterndrive Service Manual
7. Causes a loss of pressure
10. Flow control valve may be sticking
11. Causes loss of pressure
TROUBLESHOOTING
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