SEBU8337 77
Maintenance Section
Jacket Water Heater - Check
•
Outer covering
that is chafed or cut
•
Exposed wire that is used for reinforcement
•
Outer covering that is ballooning locally
•
Flexible part
ofthehosethatiskinkedorcrushed
•
Armoring that is embedded in the outer covering
A constant torque hose clamp can be used in place
of any standard hose clamp. Ensure that the constant
torque hose cl
amp is the same size as the standard
clamp.
Duetoextreme
temperature changes, the hose will
heat set. Heat setting causes hose clamps to loosen.
This can result in leaks. A constant torque hose
clamp will he
lp to prevent loose hose clamps.
Each installation application can be different. The
differences
depend on the following factors:
•
Type of hose
•
Type of fitting material
•
Anticipated
expansion and contraction of the hose
•
Anticipated expansion and contraction of the
fittings
Replace the
Hoses and the Clamps
Pressurized System: Hot coolant can cause seri-
ous burns. To open the cooling system filler cap,
stop the engine and wait until the cooling system
components are cool. Loosen the cooling system
pressure cap slowly in order to relieve the pres-
sure.
1. Stop the engine. Allow the engine to cool.
2. Loosen the cooling system filler cap slowly in
order to relieve any pressure. Remove the cooling
system filler cap.
Note: Drain the coolant into a suitable, clean
container. The coolant can be reused.
3. Drain the coolant from the cooling system to a
level that is below the hose that is being replaced.
4. Remove the hose clamps.
5. Disconnect the old hose.
6. Replace the old hose with a new hose.
7. Install the hos
eclamps.
8. Refill the cooling system.
9. Clean the cooling system filler cap. Inspect the
cooling system filler cap’s gaskets. Replace
thecoolingsy
stem fi ller cap if the gaskets are
damaged. Install the cooling system filler cap.
10. Start the engi
ne. Inspect the cooling system for
leaks.
i02486400
Jacket Water Heater - Check
Jacket water heaters help to improve startability in
ambient temp
eratures that are below 21 °C (70 °F).
All installations that require automatic starting should
have jacket water heaters.
Check the operation of the jacket water heater. For
an ambient temperature of 0 °C (32 °F), the heater
should main
tain the jacket water coolant temperature
at approximately 32 °C (90 °F).
i03039820
Overhaul Considerations
(Top End Overhaul)
A scheduled 6000 hour overhaul that is based on
prime operation of the top end can limit down time
of the engine.
Prime Power
Operating Parameters
70% average load factor that is Limited to a maximum
of 4% of use at rated load (Prime point).
i03039981
Overhaul
Consideration s
(Major Overhaul)
A scheduled 12000 hour major overhaul can limit
down time
of the engine.
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