Trim And Tilt Motor No Load Test - BRP Evinrude E-Tec Series Service Manual

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

Securely fasten motor in a suit-
IMPORTANT:
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.
ELECTRICAL CIRCUIT TESTS
Monitor motor RPM and current draw.
The motor shaft must rotate clockwise, as viewed
from the pump end, when positive (+) is applied to
the blue lead, and negative (–) is connected to
green lead.
The motor shaft must rotate counterclockwise, as
viewed from the pump end, when positive (+) is
applied to the green lead, and negative (–) is
applied to the blue lead.
Blue lead (+)
Green lead (-)
If test results vary, replace the motor.
TRIM AND TILT
30957
Green lead (+)
Blue lead (-)
DR4238r
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