O6108 08/01
COOLING REQUIREMENTS
1. To meet cooling system protection requirements,
the coolant solution must consist of:
a. Quality water
b. Ethylene glycol concentrate (EGC ) com-
monly known as antifreeze.
c. Supplemental coolant additives (SCA's).
2. A coolant solution of ethylene glycol concentrate
(EGC-antifreeze), quality water and supplemen-
tal coolant additives (SCA's)
MUST
be used
YEAR ROUND
to protect against freezing,
boil-over, liner erosion or pitting and to provide
a stable, noncorrosive environment for cooling
system components.
3. Ethylene glycol coolant concentrate (anti-
freeze) normally DOES NOT contain the SCA
chemical inhibitors needed to control liner
pitting or erosion, rust, scale, and acidity.
4. Your engine is equipped with a spin-on coolant
fi lter conditioner element which provides the
SCA's to protect your cylinder liners.
5. The coolant fi lter conditioner element performs
two functions at once:
• The outer paper element fi lters out rust, scale
or dirt particles in the coolant.
• The inner element releases chemicals into
the coolant to maintain a proper acid/alkaline
balance, inhibit corrosion and suppress erosion
pitting which is discussed below.
A - Cylinder Liner Walls
B - Engine Coolant
C - Vapor Bubbles
LINER EROSION (PITTING)
1. Cylinder liner walls (A) which are in contact
with engine coolant (B) can be eroded or pitted
unless the proper concentration and type of
SCA's are present in the coolant. Water pump
impellers are also susceptible to pitting.
2. Vapor bubbles (C) are formed when the piston's
impact causes the liner walls to vibrate, sending
pressure waves into the coolant.
3. These tiny vapor bubbles collect on the surface
of metal parts. As the bubbles collapse (pop) a
microscopic piece of metal is eroded from the
metal part. Over a period of time, this pitting
may progress completely through the cylinder
liner of a wet-sleeve, heavy-duty diesel engine.
This allows coolant to enter the combustion
chamber. Engine failure or other serious damage
will result.
4. Unprotected engines with low quality water as
coolant can have liner failure in as few as 500
hours.
5. The SCA's released by the fi lter will signifi cantly
reduce erosion and pitting. The chemicals in the
additives reduce the quantity of vapor bubbles. It
also forms a protective fi lm on the metal engine
parts which act as a barrier against collapsing
vapor bubbles.
WATER QUALITY
1. Distilled, deionized, soft water is preferred for
use in cooling systems. Bottled distilled water
from a food store or water supplier is recom-
mended. Tap water often has a high mineral
content. Tap water should NEVER
be put in
a cooling system unless fi rst tested by a water
quality laboratory. Do not use water made by
the reverse osmosis method unless it has been
PH neutralized.
2. Here are acceptable water quality specifi cations
3. If chlorides, sulfates or total dissolved solids are
higher than the above given specifi cation, the
water must be distilled, demineralized, or deion-
ized before it is used in a cooling system.
20
Servicing
Содержание LUGGER L6108
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Страница 40: ...O6108 08 01 Wiring Diagrams DC Wiring Schematic Standard Ground Lugger Propulsion Engine 24V C 4358 38...
Страница 41: ...O6108 08 01 39 Wiring Diagrams DC Wiring Schematic Standard Ground Lugger Propulsion Engine 12V C 4318B...
