40 Sundancer
®
(425 Sundancer
®
)
4.10
SECTION 4 • BILGE & UNDERWATER GEAR
B. SHAFTS
The shaft coupling is the connecting point
between the shaft and the engine. The alignment
should be set at a maximum of .005" (0.13mm).
A slight misalignment will cause loss of power,
excessive wear, noise and vibration and should
not be tolerated. When checking for parallel
coupling faces (the proof of proper alignment),
use a feeler gauge not more than .003 to .005 of
an inch thick (0.08 – 0.13mm).
With coupling faces brought together by hand –
not bolted – the feeler gauge should be tightly
gripped at all points around the edges of the
couplings. Next, hold the engine coupling flange
stationary and rotate the shaft coupling flange
90 degrees in either direction. The feeler gauge
should still be tightly gripped at all points around
the edges of the couplings.
SHAFT LOG & STRONG SEAL
™
The shaft log is a fiberglass tube which
provides an opening through the bottom of the
boat for the propeller shaft. The Strong Seal
™
is connected to it by a short length of special
flexible hose which serves to absorb normal
shaft vibration. The Strong Seal
™
prevents
water from leaking around the shaft and into
the boat. Shaft alignment and straightness
must be correct to assure proper operation of
the Strong Seal
™
. Refer to the Strong Seal
™
information for the seal carrier kit in the
Owner’s Manual packet.
C. CARRIER SEAL KIT
Your boat is equipped with spare carrier seals
located on the port and starboard engine shafts.
Seal failure can be corrected by replacing the seal
with the spare seals provided.
SHAFT LOG & STRONG SEAL
(FIG. 4.10.3)
A
C
B
SHAFT LOG TUBE
HOSE CLAMPS
WATER INJECTION
FITTING
D
E
A
C
B
D
E
CARRIER SEAL KIT
HULL BOTTOM
SHAFT LOG & STRONG SEAL
™
ASSEMBLY
(FIG. 4.10.2)
A
C
B
D
E
F
H
G
HOSE CLAMPS
WATER INJECTION
FITTING
CARRIER SEAL KIT
STRONG SEAL
STAINLESS STEEL
BANDS
FLEXIBLE HOSE
SHAFT LOG
HULL
SHAFT MISALIGNMENT
(FIG. 4.10.1)
MAX .005
TRANSMISSION
SHAFT
COUPLING
SHAFT
C
D
E
F
G
H
A
B
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