SERVICE MANUAL NUMBER 28
TROUBLESHOOTING
Power Trim Pump Motor Will Not Run In The OUT/UP Or IN/DOWN Direction
BOTH SOLENOIDS CLICK
Cause
Special Instructions
Check for battery voltage at terminals
5
OUT/UP. If no voltage is
indicated, check connections 2, 3,
while trimming
Faulty solenoids or loose or corroded
connections.
4
and 5 and/or replace solenoids.
Pump motor brushes stuck, corroded
or worn out.
Clean or replace as required.
Armature commutator dirty.
Clean or replace armature as required.
Test for shorted, open or grounded
condition and replace if needed.
Armature faulty.
Check for open or grounded condition.
Replace field and frame assembly if
needed.
Field and frame faulty.
Water or oil in motor.
Pump gears frozen.
Replace motor assembly.
Replace pump valve body and gear
assembly.
Power trim pump harness or trim
control harness shorted between
OUT/UP and IN/DOWN circuit
(pump trying to run in OUT/UP and
IN/DOWN direction simultaneously).
Disconnect BLU/WHI lead from
solenoid terminal 8. If pump motor
will now run in the OUT/UP
direction, a short in the harness exists.
Repair or replace harness as needed.
Power Trim Pump Motor Runs In The OUT/UP Direction, But Not In The
IN/DOWN Direction
IN/DOWN SOLENOID DOES NOT CLICK
Cause
Special Instructions
Loose or dirty solenoid connections.
Check connections 6 and 7 and
clean and/or tighten as required.
Open IN/DOWN circuit in trim control
or pump wiring harness.
Check for battery voltage at terminal
6 while trimming OUT/UP. If no
voltage is indicated, check for a loose
or corroded OUT/UP circuit
connection, damaged OUT/UP
circuit lead or a faulty OUT/UP trim
switch. Repair or replace as required.
Solenoid faulty.
Replace solenoid.
INDEX
90-863160
MAY 2000
Page 1C-13
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | MerCruiser Sterndrives 90-863160 |
| Model Year | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(1 votes, average: 3 out of 3)
Marine readers have rated Mercury MerCruiser Bravo Outdrives Sterndrives Marine Engines Service Manual Number 28 3.0 out of 3.0 based on 1 product reviews. I could not find any mention of the seawater pump assembly.
Maybe I have the wrong unit