345
TRIM AND TILT
ELECTRICAL CIRCUIT TESTS
14
C. Normal current draw, slow operating
speed – Check for:
• Manual release valve damaged
• Impact valves damaged
• Check valve or shuttle valve malfunctioning
Trim and Tilt Motor No Load Test
IMPORTANT: Securely fasten m otor i n a su it-
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 a mmeter in series with the
battery p ositive (+) terminal, ammete r red le ad
toward battery.
Attach or hold a vibration or mechanical tachome-
ter to the motor while performing this test.
Monitor motor RPM and current draw.
The motor shaft must rotate clockwise, as viewe d
from the pump end, when positive (+) is applied to
the blu e le ad, a nd ne gative (– ) is connected to
green lead.
The motor shaft must rotate counterclockwise, as
viewed from the pump end, when po sitive (+) is
applied to the green lead, and negative (–) is
applied to the blue lead.
If test results vary, replace the motor.
30957
DR4238r
Green lead (+)
Blue lead (-)
Blue lead (+)
Green lead (-)
To Next Page
Loading...
