Troubleshooting - Mercury BRAVO Service Manual

SERVICE MANUAL NUMBER 28
Table of Contents
Table of Contents . . . . . . . . . . . . . . . . . . . . .

Troubleshooting

. . . . . . . . . . . . . . . . . . . . . . .
Sterndrive Unit Troubleshooting
Sterndrive Unit Will Not Slide Into
Bell Housing . . . . . . . . . . . . . . . . . . . . . . .
Drive Unit Does Not Shift Into Gear;
Remote Control Shift Handle Moves
Drive Unit Does Not Shift Into Gear;
Remote Control Shift Handle Does
Not Move . . . . . . . . . . . . . . . . . . . . . . . . .
Drive Unit Shifts Hard
Drive Unit In Gear, Will Not Shift
Out Of Gear . . . . . . . . . . . . . . . . . . . . . . .
Gear Housing Noise
Drive Shaft Housing Noise
Drive Shaft Housing Noise
(Continued) . . . . . . . . . . . . . . . . . . . . . . .
Drive Shaft Housing Noise
(Continued) . . . . . . . . . . . . . . . . . . . . . . .
Power Shift . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Does Not React
System Binds . . . . . . . . . . . . . . . . . . . . . .
Performance Troubleshooting
Low WOT Engine RPM
High WOT Engine RPM
90-863160 MAY 2000
IMPORTANT INFORMATION
Section 1C - Troubleshooting
1C-1
1C-2
. . . . . . . . . 1C-2
1C-2
. . 1C-2
1C-3
. . . . . . . . . . . . . . . 1C-3
1C-3
. . . . . . . . . . . . . . . . 1C-4
. . . . . . . . . . . 1C-4
1C-5
1C-6
1C-7
. . . . . . . . . . . . . 1C-7
1C-7
. . . . . . . . . . . 1C-8
. . . . . . . . . . . . . . 1C-8
. . . . . . . . . . . . . 1C-8
Propeller Ventilating/Cavitating
Poor Boat Performance And/Or Poor
Maneuverability-Bow Too Low
Poor Boat Performance And/Or Poor
Maneuverability-Bow Too High
Power Steering . . . . . . . . . . . . . . . . . . . . . .
Hard Steering - Helm And Cable
Hard Steering (Engine Running)
- Power Steering System
Power Steering System External
Fluid Leaks . . . . . . . . . . . . . . . . . . . . . . .
Compact Hydraulic Steering
Important Information
Helm Becomes Jammed During Filling 1C-11
System Difficult To Fill
Steering Hard To Turn
Helm Unit Bumpy
- Requires Too Many Turns
Power Trim Electrical System
Power Trim System Wiring Diagram
Power Trim Hydraulic System
Power Trim Hydraulic Schematic
Auto Trim II Electrical System
Auto Trim II System Wiring Diagram
Corrosion Protection . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING
. . . . . . . 1C-8
. . . . . . . 1C-9
. . . . . . . 1C-9
1C-10
. . . . . 1C-10
. . . . . . . . . . . 1C-10
1C-10
. . . . . . . . . . . 1C-11
. . . . . . . . . . . . . . 1C-11
. . . . . . . . . . . . . . 1C-11
. . . . . . . . . . . . . . 1C-11
. . . . . . . . . 1C-11
. . . . . . . . . . 1C-12
. . . . 1C-16
. . . . . . . . . . 1C-17
. . . . . . . 1C-21
. . . . . . . . . . 1C-22
. . . . 1C-28
1C-29
Page 1C-1
1
C