Mercury 40 Service Manual

5
B
POWER TRIM
90-828631R3 MARCH 1999 Page 5B-1
MID-SECTION
Section 5B – Power Trim
1998 and Earlier Non-Bigfoot
Table of Contents
Special Tools 5B-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Trim Mounting 5B-3. . . . . . . . . . . . . . . . . . . . . .
Power Trim 5B-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theory Of Operation 5B-6. . . . . . . . . . . . . . . . . . . . . . .
Adjustments 5B-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trimming Characteristics 5B-6. . . . . . . . . . . . . . . .
Trailering Outboard 5B-7. . . . . . . . . . . . . . . . . . . . .
Tilting Outboard Up and Down Manually 5B-7. . .
Trim “In” Angle Adjustment 5B-8. . . . . . . . . . . . . .
Power Trim Flow Diagrams 5B-10. . . . . . . . . . . . . . . .
Trim Up 5B-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tilt Up 5B-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Tilt 5B-15. . . . . . . . . . . . . . . . . . . . . . . . .
Down Mode 5B-17. . . . . . . . . . . . . . . . . . . . . . . . . .
Shock Function Up 5B-19. . . . . . . . . . . . . . . . . . . .
Shock Function Return 5B-21. . . . . . . . . . . . . . . . .
Manual Tilt 5B-23. . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 5B-24. . . . . . . . . . . . . . . . . . . . . . . . . .
Preliminary Checks 5B-24. . . . . . . . . . . . . . . . . . . .
Hydraulic System Troubleshooting
Flow Chart 5B-25. . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting the Power Trim
Electrical System 5B-29. . . . . . . . . . . . . . . . . . . . . .
Power Trim System Removal 5B-31. . . . . . . . . . . . . .
Disassembly 5B-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shock Rod Removal 5B-32. . . . . . . . . . . . . . . . . . .
Shock Rod Disassembly 5B-33. . . . . . . . . . . . . . . . . .
Memory Piston Removal 5B-35. . . . . . . . . . . . . . .
Trim Motor Removal 5B-36. . . . . . . . . . . . . . . . . . .
Oil Pump Removal 5B-37. . . . . . . . . . . . . . . . . . . .
Tilt Relief Valve Removal 5B-37. . . . . . . . . . . . . . .
Suction Seat Removal 5B-39. . . . . . . . . . . . . . . . .
Pilot Check Valve Assembly Removal 5B-39. . . .
Cleaning/Inspection/Repair 5B-41. . . . . . . . . . . . . . . .
Trim Motor Electrical Tests 5B-41. . . . . . . . . . . . . .
Reassembly 5B-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O-Ring and Seal Placement 5B-42. . . . . . . . . . . .
Power Trim Reassembly 5B-44. . . . . . . . . . . . . . . . . .
Tilt Relief Valve Reassembly 5B-44. . . . . . . . . . . .
Suction Seat Reassembly 5B-45. . . . . . . . . . . . . .
Pilot Check Valve Reassembly 5B-45. . . . . . . . . .
Oil Pump Reassembly 5B-46. . . . . . . . . . . . . . . . .
Trim Motor Reassembly 5B-47. . . . . . . . . . . . . . . .
Shock Rod Reassembly 5B-48. . . . . . . . . . . . . . . .
Shock Rod Installation 5B-49. . . . . . . . . . . . . . . . .
Manual Release Valve Installation 5B-50. . . . . . .
Bleeding Power Trim Unit 5B-51. . . . . . . . . . . . . .
Power Trim System Installation 5B-51. . . . . . . . . . . .

Mercury 40 Specifications

General

Brand	Mercury
Model	40
Category	Outboard Motor
Language	English