|
BOOKS |
|
| |
|
B
O
A
T
B
U
Y
E
R
S
G
U
I
D
E
|
| |
|
|
|
M
A
R
I
N
E
S
U
R
V
E
Y
B
U
S
I
N
E
S
S |
|
|
| |
by
David Pascoe |
|
|
From
Article
Troubleshooting Problems
Involving Engine/Shaft Alignment Photos by David
H. Pascoe, Marine Surveyor
Photo #2 |
This type of mount
is fine for gas engines but not for heavy diesels.
This mount, on a brand new 45 footer, is badly distorted.
Note how it is cocked toward the engine and forward.
In this case, the mounts allowed the engine to move
so much that the shaft coupling came apart. |
Photo #1 |
Judging by the large gap at the top, his
bearing looks like it is worn. Actually it is new but the
shaft is badly misaligned with the strut. This is determined
because the gaps are on the opposite side of the bearing
at the front side of the strut. Thus, the shaft is "cocked"
in the bearing. |
Photo #3 |
The strut in photo #4 below carries
the same size shaft and prop as in #3, both of which are
in a 40' boat. But the #4 is double
the thickness in both width and cross-sectional area,
with a substantiallly wider base. There is no doubt that
this strut will hold the shaft steady. Also notice that
the length of the strut bore is double the length of that
in photo #3. |
Photo #4 |
Go to Article
|
|
|
|
