Mitsubishi Eclipse. Technical Information Manual (1994) - part 7

ENGINE <NON-TURBO>   Base Engine

Prior to installing tensioner on the engine, it is 

cylinder head expansion and contraction and for

sary to preload the tensioner plunger. This 

timing belt stretch over the life of the belt. If the

plished by installing the tensioner in a vise and

tensioner fails, it is not serviceable and should be

slowly compressing the plunger. A tensioner plunger

replaced.

pin is installed through the body of the tensioner
and plunger. When the tensioner is installed on the

Timing belt guides are cast into the oil pump and

engine, it is necessary to preload the tensioner pivot

molded into the timing belt cover on engines. The

bracket assembly with a torque wrench prior to 

purpose of the guides is to help with installation

curing the retaining bolts. The automatic tensioner

of the timing belt. They prevent the belt from falling

makes up for fluctuations in temperature through

off the sprockets.

Exhaust cam
sprocket

Intake cam

sprocket

Timing belt
tensioner

ENGINE <NON-TURBO>   Base Engine

OIL PAN

The oil pan is a single-plane design, and is
constructed of stamped antiphon steel.

The rear main oil seal is a one-piece lip seal that

requires a special sleeve for installation. A new seal

comes equipped with the special sleeve that it used
to prevent seal rollover.

Rear 
oil seal

Bed plate

OIL PUMP

The oil pump is located at the front of the engine

block, and is driven by the crankshaft. The pump
housing is made of cast aluminum, provides a guide

for the timing belt, and includes the crankshaft front
seal.

ENGINE <NON-TURBO>   Cooling System

COOLING SYSTEM

The cooling system is of the water-cooled, forced
circulation type with the following features:

l

The water pump is mounted onto the front of
the cylinder block, and is driven by the cogged
side of the timing belt. The drive sprocket is
sintered metal. The pump body is made of die
cast aluminum; and a stamped-steel impeller
is used to pump coolant through the engine.

l

The thermostat housing is located on the left
front side of the engine. The thermostat is
mounted under the thermostat housing, and
the center element is offset from the center
of its diameter. Therefore, it can only be installed

one way. The thermostat has an air bleed (jiggle

pin) located in the flange, and an O-ring with

a locating dimple. the bleed faces upward. The
thermostat temperature rating is 90.5%
(195°F).

Coolant enters the water pump, where it is

routed through the engine block and into the

cylinder head. Then, the coolant is routed from
cylinder head to both heater core and the radia-
tor (engine hot) or through bypass (engine cold)

to the water pump where the cycle starts over
again.
A small-size, high-performance radiator has
been adopted for better cooling efficiency and
less weight.

Reduction in size of the automatic transaxle

oil cooler had resulted in a lowered radiator
position, which has permitted the “slant nose”
design of the body.
The cooling fan control has been integrated
into the centralized control by the engine control
module for better cooling efficiency, better fuel

consumption, less noise, and better accelera-
tion.

COOLANT FLOW

Radiator 

Water pump

Block

CEN0102

ENGINE  <NON-TURBO>  - Cooling System

SPECIFICATIONS

Cooling method

Radiator

Thermostat
Water pump

Drive method

Items

Specifications

Water-cooled pressurized, forced circulation
with electrical fan

Pressurized corrugated fin type

Wax pellet type with jiggle valve

Centrifugal impeller
Timing belt

CONSTRUCTION

Radiator

Reserve tank

Radiator

 oil cooler

(Dual pipe type)

 oil cooler hose and 

pipe