Table of Contents
Advertisement
•
COOLING SYSTEM
7 - 1
COOLING SYSTEM
C O N T E N T S
Page
ACCESSORY DRIVE BELTS . .
21
COOLING SYSTEM DIAGNOSIS
4
DIAGNOSIS
3
GENERAL INFORMATION
T h r o u g h o u t t h i s group, references m a y be made t o
a p a r t i c u l a r vehicle b y letter or number designation.
A c h a r t showing t h e breakdown o f these designations
is included i n t h e I n t r o d u c t i o n Section a t t h e f r o n t o f
t h i s service m a n u a l .
COOLING
SYSTEM
The cooling system regulates the engine operating
t e m p e r a t u r e by; a l l o w i n g the engine t o reach n o r m a l
operating t e m p e r a t u r e as q u i c k l y as possible, m a i n -
t a i n i n g n o r m a l operating temperature, and prevent-
i n g overheating.
The cooling system also provides a means o f heat-
i n g the passenger compartment and cooling t h e auto-
m a t i c t r a n s m i s s i o n f l u i d ( i f equipped). T h e cooling
system i s pressurized a n d uses a centrifugal w a t e r
p u m p to circulate coolant throughout t h e system.
Page
ENGINE BLOCK HEATERS
24
SERVICE PROCEDURES
. . . 8
SPECIFICATIONS . . . . . . . . .
. . . . . . . . 25
A n optional factory i n s t a l l e d m a x i m u m d u t y cool-
i n g package is available o n most models. T h i s pack-
age
w i l l
provide
a d d i t i o n a l cooling capacity for
vehicles
used under extreme
conditions such as
t r a i l e r t o w i n g i n h i g h a m b i e n t temperatures.
As
coolant
temperature
reaches
approximately
220°F t h e engine idle speed i s increased b y t h e en-
gine controller to provide increased cooling system
performance.
COOLING SYSTEM
COMPONENTS
The cooling system consists of: a down-flow r a d i a -
tor, engine d r i v e n cooling f a n , f a n spacer ( w i t h o u t a i r
conditioning), f l u i d fan drive ( w i t h a i r conditioning),
fan shroud, radiator pressure cap, thermostat, cool-
ant
reserve
system,
t r a n s m i s s i o n o i l cooler
( i f
equipped w i t h a n automatic transmission), coolant,
water p u m p (to circulate coolant), hoses a n d hose
clamps.
Advertisement
Table of Contents
