Mercury INSTALLATION MANUAL D7.3L D-TRONIC - Finding Crankshaft Horizontal Centerline (“X” Dimension)

D7.3L D-TRONIC DIESEL ENGINES - BRAVO MODELS
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Finding Crankshaft Horizontal Centerline (“X” Dimension)
“X” Dimension can be measured by the “90° Tool Method” or by the “Tape Measure Method.”
90
° TOOL METHOD
1. Construct 90° tool.
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90°
b
a
a-Dimension from Chart Below
b-Measurement: 4 ft. (1.2 m)
To Lower Drive Unit - Subtract
from dimension “a”.
To Raise Drive Unit - Add
to dimension “a”.
90° TOOL VERTICAL DIMENSION CHART
Sterndrive Unit Location
Bravo One/Two/Three 13-9/16 in. (345mm)
IMPORTANT: This dimension should only be raised or lowered after proper testing.
2. Determine “X” Dimension location of crankshaft centerline(s).
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c
a
b
c
b
a
Single Engine Dual Engine
a-Place 90
° Tool Along Boat Bottom at Vertical Centerline
b-Point at Which Top of Tool Contacts Transom on Vertical Centerline is Crank-
shaft Horizontal Centerline.
c-Draw a Line Perpendicular to Vertical Centerline at Crankshaft Horizontal
Centerline.