Westerbeke 38B FOUR Manual do Operador Página 30
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Exhaust
System
Failures
When the engine's sea water
is
fed into an exhaust system so that the full stream
of
this water strikes a sur-
face, erosion takes place. This erosion may cause premature failures. The proper design
of
either a water
jacketed
or
water injected "wet" exhaust system
to
prevent this problem requires that the sea water inlet be
positioned so that the entering stream of sea water does not directly strike a surtace.
In addition, the velocity
of the entering sea water stream should be
as
low as possible, which can be achieved by having inlet fittings
as
big
in
diameter as possible.
The best protection against exhaust system leaks
is
to
routinely inspect the complete exhaust system. Check
for leaks around manifolds, gaskets, and welds. Make sure exhaust lines are not heating surrounding areas
excessively.
If excessive heat is present, correct the situation immediately. If you notice a change in the
sound or appearance of the exhaust system, inspect the exhaust system and correct the cause.
Exhaust risers
installed off the exhaust manifold should not exceed 8 Ibs
in
total weight when rigidly con-
nected. Excessive weight and vibration can result
in
a manifold failure and/or the fracturing of the riser from
the manifold at its attachment. Dry portions of the exhaust connected
to
the manifold, which lay before the
water injected exhaust system,
MUST
be properly insulated
to
retain the exhaust heat within the exhaust
pipe.
Although diesel engine exhaust gases are not as toxic
as
exhaust fumes from gasoline en-
gines, carbon monoxide is present in diesel exhaust fumes in less concentration. Carbon
monoxide is a dangerous gas that can cause unconsciousness and
is
potentially lethal. Some
of
the symptoms
or
signs
of
carbon monoxide inhalation
or
poisoning are as follows:
o Dizziness
o Vomiting
o
Intense Headache
o Muscular Twitching
o Weakness and
Sleepiness
o Throbbing in Temples
If you experience any
of
the above symptoms, get out into fresh air immediately.
Make sure there are
no
unnecessary objects suspended from any portion of the exhaust lines. Excessive
weight could cause deflection or distortion of the
lines, resulting
in
damage or leaks. Inspect insulated por-
tions
of
the exhaust system
to
make sure there
is
no deterioration
of
the insulation.
Westerbeke
Diesel
Engines
28
- WESI'ERBEKE 1
- SAFETY PRECAUTIONS 2
- 1 Westerbeke Diesel 3
- . 4
- Diesel Engines 5
- Marine Diesel Engine 10
- Lift pump 11
- Oil Fill 12
- 90° Exhaust Elbow 12
- THREE MARINE DIESEL ENGINE 14
- GENERAL SPECIFICATIONS 14
- 6 ft (1.8 m) 15
- + 000 - 100) at full open 16
- + 000 - 100) at full open 19
- ± 0.5' BTDC (Static) 21
- AlnIl:Nan:~~~~~B~~==~' 23
- Rigging and 24
- Engines 24
- Westerbeke Diesel Engines 27
- Exhaust System 28
- ." 29
- * Manufactured 31
- + ) battery connection 34
- 190' 35
- Westerbeke 38
- 30 seconds at a time 41
- Break-In 43
- FITTING 45
- Iills. Prevent 46
- ,-----/---€,i\l--\ 49
- ----+fT 50
- ,----:---"1;" 51
- ~1l1)~,i 52
- 1'1 53
- FUNCTION 55
- MANIFOLD 55
- PRESSURE 55
- '1 56
- : i: ' 56
- REPLACE 57
- IMCOMING 59
- Crankcase 64
- NEUTRAL 66
- "j/ 68
- I I i 69
- 10-13/10-14 70
- Starling the Engine 71
- Shifting 71
- Freewheeling 71
- Cooling Problems 72
- Annual Checks 73
- Daily Checks 73
- Winter Checks 73
- General Checks 73
- Walter V-Drives 75
- RV'IO 76
- ~/LOCKING 77
- "H" 78
- Maintenance 79
- I terminal on the 81
- + and - ground 82
- + 140 psi 86
- W 42B FOUR Engine) 87
- ADJUST VALVES 88
- ~'"'' 89
- 50-50 solution 91
- 38B, and page 19 for 91
- Batleries 93
- 4. Check the condition 94
- QapSQ[9W 95
- A Starter 97
- Weslerbeke Diesel Engines 100
- YOUR NOTES 104
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