water pump MITSUBISHI ENDEAVOR 2004 Service Repair Manual

2004 ENGINE
Engine Cooling - Endeavor
GENERAL DESCRIPTION The cooling system is designed to keep every part of the engine at appropriate
temperature in whatever condition the engine may be operated. The cooling method
is of the water-cooled, pressure forced circulation type in which the water pump
pressurizes coolant and circulates it throughout the engine. If the coolant
temperature exceeds the prescribed temperature, the thermostat opens to circulate
the coolant through the radiator as well so that the heat absorbed by the coolant may
be radiated into the air. The water pump is of the centrifugal type and is driven by
the drive belt from the crankshaft. The radiator is the corrugated fin, down flow
type. CONSTRUCTION DIAGRAM Fig. 1: Identifying Engine Cooling Construction Diagram
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor


2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

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.
SPECIAL TOOLS Fig. 2: Identifying Engine Cooling Special Tools

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ENGINE COOLING DIAGNOSIS INTRODUCTION The system cools the engine so that it does not over-heat and maintains the engine
at an optimum temperature. The system components are the radiator, water pump,
thermostat, condenser fan assembly. Possible faults include low coolant,
contamination, belt loosening and component damage. TROUBLESHOOTING STRATEG
Y

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

Fig. 55: Checking Valve Lift

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WATER PUMP REMOVAL AND INSTALLATION
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

Fig. 56: Removing/Installing Water Pump Components

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INSTALLATION SERVICE POINT > >A<< O-RING INSTALLATION Fit the O-ring into the groove of the water pipe ends, and apply water to the
circumference of the O-rin
g and the
pipe bores to insert the
pipe assembl
y.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

MD998715: Pins MD998767: Tensioner Pulley Wrench MD998769: Crankshaft Spacer
REMOVAL SERVICE POINTS << A >> TIMING BELT REMOVAL 1. Mark the belt running direction for reinstallation.
2. Loosen the tensioner pulley bolt, and then remove
the timing belt.
CAUTION: Water or oil on the belt shortens its life drasticall
y, so
the removed timing belt, sprocket, and tensioner
must be kept free from oil and water. These parts
should not be washed or immersed in solvent.
Replace parts if contaminated. If there is oil or water
on any part, check the front case oil seal, camshaft
oil seal, and water pump for leaks.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Overhaul - Endeavor

Fig. 25: Align The Timing Mark On The Right Bank Camshaft Sprocket With Timing Mark On Rocker Cover

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5. Align the timing mark on the crankshaft sprocket with the timing mark on the
oil pump case.
6. Install the timing belt on each sprocket and pulley in the following sequence.
Do not leave the belt slack between each sprocket and pulley.
1. Crankshaft sprocket
2. Idler pulley
3. Left bank camshaft sprocket
4. Water pump pulley
5. Right bank camshaft sprocket
6. Tensioner
pulle
y

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Overhaul - Endeavor

4. Tighten the two bolts to the specified torque.
Tightening torque: 9.0+/-1.0 N.m (80+/-9 in-lb) WATER PUMP & WATER HOSE REMOVAL AND INSTALLATION
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Overhaul - Endeavor

Fig. 45: Removing/Installing Water Pump And Water Hose

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INSTALLATION SERVICE POINTS >>A<< O-RING AND WATER INLET PIPE INSTALLATION 1. Attach a new O-rin
g to each end of the water inlet
pipe.
CAUTION: Keep the O-ring free of oil or grease.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Overhaul - Endeavor

3. Insert the front end of the pipe into the water pump. >>B<< THERMOSTAT HOUSING GASKET INSTALLATION Install the thermostat housing gasket so that the tab is positioned as shown in the
illustration.
Fig. 47: Installing Thermostat Housing Gasket

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>>C<< THERMOSTAT INSTALLATION 1. Check that the rubber ring is free from damage and seated correctly in the
thermostat flange.
2. Install the thermostat as shown in the illustration. The jiggle valve must be at
the to
p position.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Overhaul - Endeavor

2. Install the timing belt by the following procedure so that there is no deflection
in the timing belt between each sprocket and pulley.
1. Crankshaft sprocket
2. Idler pulley
3. Camshaft sprocket (Left bank)
4. Water pump pulley
5. Camshaft sprocket (Right bank)
6. Tensioner pulley
3. Turn the camshaft sprocket (Right bank) counterclockwise until the tension
side of the timing belt is firmly stretched. Check all the timing marks again.
4. Use special tool MD998767 to push the tensioner pulley into the timing belt,
then temporarily tighten the center bolt.
Fi
g. 92: Pushin
g Tensioner Pulle
y Into Timin
g Bel
t

2004 Mitsubishi Endeavor Limited
2004 ENGINE Engine - Endeavor