289
TRIM AND TILT
ELECTRICAL CIRCUIT TESTS
13
Connect a 0 to 100 A DC ammeter in series
between the battery side of the starter solenoid
and the red lead to the trim/tilt relay module.
Observe ammeter and a stopwatch while running
hydraulic unit through several complete cycles.
Compare test results to the values listed:
Performance Chart
Test results include three basic possibilities:
A. Low current draw – Check for:
•
Valves leaking
•
Relief valve springs weak
•
Pump damaged
•
O-rings leaking
•
Check valves fouled or damaged
•
Manual release valve damaged
B. High current draw – Check for:
•
Pump binding
•
Motor binding
•
Cylinder binding
•
Valves sticking
C. Normal current draw, slow operating
speed – Check for:
•
Impact valves damaged
•
Check valve or shuttle valve malfunctioning
•
Manual release valve damaged
Trim and Tilt Motor No Load Test
IMPORTANT:
Securely fasten motor in a suit-
able fixture before proceeding with this test.
Use a battery rated at 360 CCA (50 Ah) or higher
that is in good condition and fully charged to per-
form this test.
Connect a 0 to 50 A ammeter in series with the
battery positive (+) terminal, ammeter red lead
toward battery.
Attach or hold a vibration or mechanical tachome-
ter to the motor while performing this test.
1.
Red lead
005441
Mode
Normal
Current Draw
Time in
Seconds
Full Range UP
<30 A
12-18
Full Range DOWN
<30 A
<18
Stall
<40 A
–
1
Содержание E-tec 75 HP
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Страница 16: ...16 INTRODUCTION NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other ...
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Страница 154: ...154 ELECTRICAL AND IGNITION NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other ...
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Страница 237: ...237 POWERHEAD POWERHEAD VIEWS 10 Top ...
Страница 238: ...238 POWERHEAD NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other ...
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