coolant level MERCEDES-BENZ SPRINTER 2006 User Guide

SCOPE OF WORK FOR MAINTENANCE SERVICE
Oil Service
²Engine: Oil change and filter replacement
Check fluid levels of the following system, refill as neces-
sary.
²If fluid is lost, trace and eliminate cause - as a
separate order.
²Power-assisted steering
Lubrication work:
²Trailer tow hitch (original equipment)
Maintenance
²ASSYST maintenance computer reset
Function check
²Signalling system, warning and indicator lamps
²Headlamps, exterior lighting
²Windshield wipers, windshield washer system
Check for leaks and damage
²Check for abrasion points and ensure that lines
are correctly routed!
²All lines and hoses, sensor cables
²Rubber boots on front axle drive shafts, rubber
boots on front axle suspension ball joints, shock
absorbers
²Check fluid levels for the following systems, cor-
rect as necessary
NOTE: Should there be a loss of fluid which cannot
be explained by regular use, trace and eliminate the
cause.
²Engine cooling system. Check corrosion inhibi-
tor/antifreeze, refill as necessary.
²Hydraulic brake system
²Battery
²Windshield washer system
Engine
²Fuel filter renewal - Every oil service
²Air cleaner with maintenance indicator:
²Check degree of contamination.
²Air cleaner filter element renewed as necessary.
Chassis and body
²Trailer coupling: Check operation, play and
retaining fixtures
²Secondary rubber springs: Visual check
²Tire pressures: Correct as necessary, including
spare tire
²Check thickness of brake pads
²Brake test
²Check condition of steering mechanism
²Heating/ventilation dust filter renewal
ADDITIONAL MAINTENANCE WORK
Automatic transmission once only at 80,000 miles / 128000
km
²Oil and filter change
During every second maintenance service
²Air cleaner without maintenance indicator:
²Air cleaner filter element renewal
²Check poly-V-belt for wear and signs of damage
During every fourth maintenance service
²Change rear axle fluid
ADDITIONAL MAINTENANCE WORK AFTER YEARS
Every 2 years
²Change brake fluid.
Every 3 years
²Air cleaner filter element renewal (note installa-
tion date)
Every 15 years or 100,000 miles
²Coolant renewal
²Note coolant composition
INTERNATIONAL SYMBOLS
DESCRIPTION
DaimlerChrysler Corporation uses international
symbols to identify engine compartment lubricant
and fluid inspection and fill locations (Fig. 3).
Fig. 3 INTERNATIONAL SYMBOLS
VALUBRICATION & MAINTENANCE 0 - 9

COOLING SYSTEM
COOLING SYSTEM DIAGNOSIS - DIESEL ENGINE
CONDITION POSSIBLE CAUSES CORRECTION
TEMPERATUREGAUGE READS
LOW1. Vehicle is equipped with a
heavy duty cooling system.1. None. System operating norma-
ly.
2. Temperature gauge not connect-
ed2. Connect gauge.
3. Temperature gauge connected
but not operating.3. Check gauge. Refer (Refer to 8
- ELECTRICAL/INSTRUMENT
CLUSTER - DIAGNOSIS AND
TESTING)
4. Coolant level low. 4. Fill cooling system. (Refer to 7 -
COOLING - STANDARD PROCE-
DURE)
TEMPERATURE GAUGE READS
HIGH. COOLANT MAY OR MAY
NOT BE LEAKING FROM SYS-
TEM1. Vehicle overloaded, high ambi-
ent (outside) temperatures with
A/C turned on, stop and go driving
or prolonged operation at idle
speeds.1. Temporary condition, repair not
required. Notify customer of vehicle
operation instructions located in
Owners Manual.
2. Temperature gauge not function-
ing correctly.2. Check gauge. (Refer to 8 -
ELECTRICAL/INSTRUMENT CLUS-
TER - DIAGNOSIS AND TESTING)
3. Air traped in cooling 3. Drain cooling system (Refer to 7
- COOLING - STANDARD PROCE-
DURE) and refill (Refer to 7 -
COOLING - STANDARD PROCE-
DURE)
4. Radiator cap faulty. 4. Replace radiator cap.
5. Plugged A/C or radiator cooling
fins.5. Clean all debre away from A/C
and radiator cooling fins.
6. Coolant mixture incorrect. 6. Drain cooling system (Refer to 7
- COOLING - STANDARD PROCE-
DURE) refill with correct mixture
(Refer to 7 - COOLING - STAN-
DARD PROCEDURE).
7. Thermostat stuck shut. 7. Replace thermostat.
8. Bug screen or winter front being
used.8. Remove bug screen or winter
front.
9. Viscous fan drive not operating
properly.9. Check viscous fan (Refer to 7 -
COOLING/ENGINE/FAN DRIVE
VISCOUS CLUTCH - DIAGNOSIS
AND TESTING)
10. Cylinder head gasket leaking. 10. Check for leaking head gaskets
(Refer to 7 - COOLING - DIAGNO-
SIS AND TESTING).
11. Heater core leaking. 11. Replace heater core.
12. cooling system hoses leaking. 12. Tighten clamps or Replace
hoses.
7 - 2 COOLINGVA

ENGINE
TABLE OF CONTENTS
page page
COOLANT
DESCRIPTION..........................9
DIAGNOSIS AND TESTING
COOLING SYSTEM LEAKS..............10
STANDARD PROCEDURE
ADDING ADDITIONAL COOLANT.........12
DRAINING COOLING SYSTEM...........12
REFILLING COOLING SYSTEM...........13
COOLANT LEVEL SENSOR
REMOVAL.............................13
INSTALLATION.........................14
RADIATOR FAN
REMOVAL.............................14
INSTALLATION.........................14
ENGINE BLOCK HEATER
REMOVAL.............................14
INSTALLATION.........................15
ENGINE COOLANT TEMP SENSOR
DESCRIPTION.........................15REMOVAL.............................15
INSTALLATION.........................15
ENGINE COOLANT THERMOSTAT
REMOVAL.............................16
INSTALLATION.........................16
FAN DRIVE VISCOUS CLUTCH
REMOVAL.............................17
INSTALLATION.........................17
RADIATOR
REMOVAL.............................17
INSTALLATION.........................19
RADIATOR PRESSURE CAP
DESCRIPTION.........................19
OPERATION...........................20
DIAGNOSIS AND TESTING - RADIATOR
PRESSURE CAP......................20
WATER PUMP
REMOVAL.............................20
INSTALLATION.........................22
COOLANT
DESCRIPTION
Coolant flows through the engine water jackets
and cylinder heads absorbing heat produced by the
engine during operation. The coolant carries heat to
the radiator and heater core. Here it is transferred to
ambient air passing through the radiator and heater
core fins.
The required ethylene-glycol (antifreeze) and water
mixture depends upon the climate and vehicle oper-
ating conditions. The recommended mixture of 50/50
ethylene-glycol and water will provide protection
against freezing to -37É C (-35É F). The antifreeze
concentrationmust alwaysbe a minimum of 44 per-
cent, year-round in all climates.If percentage is
lower than 44 percent, engine parts may be
eroded by cavitation, and cooling system com-
ponents may be severely damaged by corrosion.
Maximum protection against freezing is provided
with a 68 percent antifreeze concentration, which
prevents freezing down to -67.7É C (-90É F). A higher
percentage will freeze at a warmer temperature.
Also, a higher percentage of antifreeze can cause the
engine to overheat because the specific heat of anti-
freeze is lower than that of water.100 Percent Ethylene - Glycol - Should Not Be Used in
Chrysler Vehicles
Use of 100 percent ethylene-glycol will cause for-
mation of additive deposits in the system, as the cor-
rosion inhibitive additives in ethylene-glycol require
the presence of water to dissolve. The deposits act as
insulation, causing temperatures to rise to as high as
149É C (300É F). This temperature is hot enough to
melt plastic and soften solder. The increased temper-
ature can result in engine detonation. In addition,
100 percent ethylene-glycol freezes at -22É C (-8É F ).
Propylene - glycol Formulations - Should Not Be Used in
Chrysler Vehicles
Propylene-glycol formulations do not meet
Chrysler coolant specifications.It's overall effec-
tive temperature range is smaller than that of ethyl-
ene-glycol. The freeze point of 50/50 propylene-glycol
and water is -32É C (-26É F). 5É C higher than ethyl-
ene-glycol's freeze point. The boiling point (protection
against summer boil-over) of propylene-glycol is 125É
C (257ÉF)at96.5 kPa (14 psi), compared to 128É C
(263É F) for ethylene-glycol. Use of propylene-glycol
can result in boil-over or freeze-up in Chrysler vehi-
cles, which are designed for ethylene-glycol. Propy-
lene glycol also has poorer heat transfer
characteristics than ethylene glycol. This can
increase cylinder head temperatures under certain
conditions.
VAENGINE 7 - 9

Propylene - glycol / Ethylene - glycol Mixtures - Should Not
Be Used in Chrysler Vehicles
Propylene-glycol/ethylene-glycol Mixtures can
cause the destabilization of various corrosion inhibi-
tors, causing damage to the various cooling system
components. Also, once ethylene-glycol and propy-
lene-glycol based coolants are mixed in the vehicle,
conventional methods of determining freeze point will
not be accurate. Both the refractive index and spe-
cific gravity differ between ethylene glycol and propy-
lene glycol.
CAUTION: Richer antifreeze mixtures cannot be
measured with normal field equipment and can
cause problems associated with 100 percent ethyl-
ene-glycol.
DIAGNOSIS AND TESTING
COOLING SYSTEM LEAKS
ULTRAVIOLET LIGHT METHOD
A leak detection additive is available through the
parts department that can be added to cooling sys-
tem. The additive is highly visible under ultraviolet
light (black light). Pour one ounce of additive into
cooling system. Place heater control unit in HEAT
position. Start and operate engine until radiator
upper hose is warm to touch. Aim the commercially
available black light tool at components to be
checked. If leaks are present, black light will cause
additive to glow a bright green color.
The black light can be used in conjunction with a
pressure tester to determine if any external leaks
exist (Fig. 1).
PRESSURE TESTER METHOD
The engine should be at normal operating temper-
ature. Recheck the system cold if cause of coolant
loss is not located during the warm engine examina-
tion.
WARNING: Hot, pressurized coolant can cause
injury by scalding.
Carefully remove coolant recovery pressure con-
tainer cap and check coolant level. Push down on cap
to disengage it from stop tabs. Wipe inside of con-
tainer and examine lower inside sealing seat for
nicks, cracks, paint, dirt and solder residue. Inspect
radiator-to- pressure container hose for internal
obstructions. Insert a wire through the hose to be
sure it is not obstructed.
Inspect cams on outside of pressure container. If
cams are damaged, seating of pressure cap valve and
tester seal will be affected.
Attach pressure tester (7700 or an equivalent) to
coolant pressure container (Fig. 2).
Fig. 1 Leak Detection Using Black Light - Typical
1 - TYPICAL BLACK LIGHT TOOL
7 - 10 ENGINEVA

Operate tester pump to apply 103.4 kPa (15 psi)
pressure to system. If hoses enlarge excessively or
bulges while testing, replace as necessary. Observe
gauge pointer and determine condition of cooling sys-
tem according to following criteria:
Holds Steady:If pointer remains steady for two
minutes, serious coolant leaks are not present in sys-
tem. However, there could be an internal leak that
does not appear with normal system test pressure. If
it is certain that coolant is being lost and leaks can-
not be detected, inspect for interior leakage or per-
form Internal Leakage Test.
Drops Slowly:Indicates a small leak or seepage
is occurring. Examine all connections for seepage or
slight leakage with a flashlight. Inspect radiator,
hoses, gasket edges and heater. Seal small leak holes
with a Sealer Lubricant (or equivalent). Repair leak
holes and inspect system again with pressure
applied.
Drops Quickly:Indicates that serious leakage is
occurring. Examine system for external leakage. If
leaks are not visible, inspect for internal leakage.
Large radiator leak holes should be repaired by a
reputable radiator repair shop.
INTERNAL LEAKAGE INSPECTION
Remove engine oil pan drain plug and drain a
small amount of engine oil. If coolant is present in
the pan, it will drain first because it is heavier than
oil. An alternative method is to operate engine for a
short period to churn the oil. After this is done,
remove engine dipstick and inspect for water glob-ules. Also inspect transmission dipstick for water
globules and transmission fluid cooler for leakage.
WARNING: WITH RADIATOR PRESSURE TESTER
TOOL INSTALLED ON RADIATOR, DO NOT ALLOW
PRESSURE TO EXCEED 110 KPA (20 PSI). PRES-
SURE WILL BUILD UP QUICKLY IF A COMBUSTION
LEAK IS PRESENT. TO RELEASE PRESSURE,
ROCK TESTER FROM SIDE TO SIDE. WHEN
REMOVING TESTER, DO NOT TURN TESTER MORE
THAN 1/2 TURN IF SYSTEM IS UNDER PRESSURE.
Operate engine without pressure cap on coolant
container until thermostat opens. Attach a Pressure
Tester to container. If pressure builds up quickly it
indicates a combustion leak exists. This is usually
the result of a cylinder head gasket leak or crack in
engine. Repair as necessary.
If there is not an immediate pressure increase,
pump the Pressure Tester. Do this until indicated
pressure is within system range of 110 kPa (16 psi).
Fluctuation of gauge pointer indicates compression or
combustion leakage into cooling system.
Because the vehicle is equipped with a catalytic
converter,do notremove spark plug cables or short
out cylinders to isolate compression leak.
If the needle on dial of pressure tester does not
fluctuate, race engine a few times to check for an
abnormal amount of coolant or steam. This would be
emitting from exhaust pipe. Coolant or steam from
exhaust pipe may indicate a faulty cylinder head gas-
ket, cracked engine cylinder block or cylinder head.
A convenient check for exhaust gas leakage into
cooling system is provided by a commercially avail-
able Block Leak Check tool. Follow manufacturers
instructions when using this product.
COMBUSTION LEAKAGE TEST - WITHOUT PRES-
SURE TESTER
DO NOT WASTE reusable coolant. If solution is
clean, drain coolant into a clean and suitably marked
container for reuse.
WARNING: Do not remove cylinder block drain
plugs or loosen radiator drain with system hot and
under pressure. serious burns from coolant can
occur.
Drain sufficient coolant to allow thermostat
removal.
Remove accessory drive belt.
Add coolant to pressure container to bring level to
within 6.3 mm (1/4 in) of top of thermostat housing.
CAUTION: Avoid overheating. Do not operate
engine for an excessive period of time. Open drain-
cock immediately after test to eliminate boil over.
Fig. 2 PRESSURE TESTING
1 - PRESSURE RESERVOIR CAP
2 - PRESSURE RESERVOIR
3 - PRESSURE TESTER
VAENGINE 7 - 11

REFILLING COOLING SYSTEM
(1) Tighten the radiator drain and the cylinder
block drain plug(s) (if removed). Tighten the engine
drain plug to 30 N´m (22 lbs. ft.).
(2) Fill system using a 50/50 mixture of ethylene-
glycol antifreeze and low mineral content water. Fill
radiator to top and add sufficient coolant to the cool-
ant recovery pressure container to raise level to
COLD MINIMUM mark.
(3) With heater control unit in the HEAT position,
operate engine with container cap in place.
(4) After engine has reached normal operating
temperature, shut engine off and allow it to cool.
When engine is cooling down, coolant will be drawn
into the radiator from the pressure container.
(5) Add coolant to pressure container as necessary.
Only add coolant to the container when the
engine is cold. Coolant level in a warm engine
will be higher due to thermal expansion.To
purge the cooling system of all air, this heat up/cool
down cycle (adding coolant to cold engine) must be
performed three times. Add necessary coolant to raisecontainer level to the COLD MINIMUM mark after
each cool down period.
COOLANT LEVEL SENSOR
REMOVAL
WARNING: Risk of injury to skin and eyes due to
scalding from hot coolant. Do not open the cooling
system unless the temperature is below 194Éf
(90Éc). Wear protective clothing and eye wear. Risk
of poisoning if coolant is swallowed. Store coolant
in proper and appropriately marked containers.
NOTE: Drain coolant from radiator drain plug only.
(1) Drain coolant until the coolant reservoir is
emptied.
(2) Disconnect the wiring harness electrical con-
nector.
Fig. 3 DRAINING COOLANT SYSTEM
1 - DRAIN HOSE 3 - RADIATOR DRAIN PLUG
2 - ENGINE DRAIN PLUG 4 - DRAIN HOSE
VAENGINE 7 - 13

(3) Turn the level sensor 90 degrees clockwise, lift
up and out of the container (Fig. 4).
INSTALLATION
(1) Align coolant level sensor with coolant
reservior access whole, press down while turning
counterclockwise 90 degrees to seat sensor (Fig. 4).
(2) Connect coolant level sensor electrical connec-
tor (Fig. 4).
(3) Refill cooling system to proper level (Refer to 7
- COOLING/ENGINE/COOLANT - STANDARD PRO-
CEDURE).
(4) Inspect for leaks.
RADIATOR FAN
REMOVAL
(1) Disconnect the negative battery cable.
(2) Detach coolant line from lower radiator shroud.
(3) The radiator fan assembly is attached
(threaded) to the water pump hub shaft (Fig. 5).
Remove the fan blade/viscous fan drive assembly
from the water pump by turning the mounting nut
counterclockwise as viewed from the front. Threads
on the radiator fan drive areRIGHT-HAND.A36
MM Fan Wrench should be used to prevent pulley
from rotating (Fig. 5).(4) Remove radiator fan shroud and radiator fan.
(Fig. 5).
NOTE: Store the viscous fan clutch in the upright
position. DO NOT place down flat.
INSTALLATION
(1) Install fan blade to viscous clutch. Tighten
bolts to 9 N´m (80 lbs. in.). (Fig. 5).
(2) Install fan and clutch along with fan shroud in
to engine bay area (Fig. 5).
(3) Install the center bolt of the viscous clutch.
Tighten bolt to 45 N´m (33 lbs. ft.). (Fig. 5)
(4) Attach coolant line to lower radiator shroud.
(5) Properly align and clip the fan shroud into
place.
(6) Connect negative battery cable.
ENGINE BLOCK HEATER
REMOVAL
WARNING: Risk of injury to skin and eyes due to
scalding from hot coolant. Do not open the cooling
system unless the temperature is below 90ÉC
(194ÉF). Wear protective clothing and eye wear. Risk
of poisoning if coolant is swallowed. Store coolant
in proper and appropriately marked containers.
Fig. 4 COOLANT LEVEL SENSOR
1 - COOLANT LEVEL SENSOR
2 - COOLANT RESERVIOR
3 - ELECTRICAL CONNECTOR
Fig. 5 RADIATOR FAN
1 - VISCOUS CLUTCH
2 - COUNTERHOLDER
3 - CLUTCH BOLT
4 - FAN BOLT
5-FAN
7 - 14 ENGINEVA

(3) Refill coolant system to proper level with
proper mixture of coolant (Refer to 7 - COOLING/
ENGINE/COOLANT - STANDARD PROCEDURE).
(4) Install engine cover (Refer to 9 - ENGINE -
INSTALLATION).
(5) Connect negative battery cable.
WARNING: Use extreme caution when engine is
operating. Do not stand in a direct line with fan. do
not put your hands near pulleys, belts or fan. Do
not wear loose clothes.
(6) Start engine and inspect for leaks.
ENGINE COOLANT THERMO-
STAT
REMOVAL
WARNING: RISK OF INJURY TO SKIN AND EYES
FROM SCALDING WITH HOT COOLANT. RISK OF
POISONING FROM SWALLOWING COOLANT. DO
NOT OPEN COOLING SYSTEM UNLESS COOLANT
TEMPERATURE IS BELOW 90ÉC (194ÉF). OPEN CAP
SLOWLY TO RELEASE PRESSURE. STORE COOL-
ANT IN SUITABLE AND APPROPRIATELY MARKED
CONTAINER. WEAR PROTECTIVE GLOVES,
CLOTHES AND EYE WEAR.
NOTE: Inspect condition of all clamps and hoses,
replace as necessary.
(1) Disconnect negative battery cable.
(2) Partially drain engine coolant (Refer to 7 -
COOLING/ENGINE/COOLANT - STANDARD PRO-
CEDURE).
(3) Unplug connector, pull off locking element and
pull out coolant temperature sensor.
(4) Detach air intake hose at charge air distribu-
tion pipe.
(5) Detach coolant hoses at thermostat housing.
(6) Unscrew cap at oil filter housing.
(7) Remove thermostat housing (Fig. 8).(8) Clean all sealing surfaces.
INSTALLATION
(1) Clean all sealing surfaces.
(2) Position and install thermostat housing with
new gasket (Fig. 8). Tighten bolts to 9N´m (80
lbs.in.).
NOTE: Inspect condition of all clamps and hoses,
replace as necessary.
(3) Install cap at oil filter housing.
(4) Connect coolant hoses and vent hose (Fig. 8).
(5) Attach air intake hose at charge air distribu-
tion pipe.
(6) Close coolant drain.
(7) Connect negative battery cable.
(8) Fill coolant system to proper level with appro-
priate coolant mixture (Refer to 7 - COOLING/EN-
GINE/COOLANT - STANDARD PROCEDURE).
WARNING: USE EXTREME CAUTION WHEN ENGINE
IS OPERATING. DO NOT STAND IN DIRECT LINE
WITH FAN. DO NOT PUT YOUR HANDS NEAR PUL-
LEYS, BELTS OR FAN. DO NOT WEAR LOOSE
CLOTHES.
(9) Start engine and inspect for leaks.
Fig. 8 THERMOSTAT HOUSING ASSEMBLY
1 - O-RING
2 - CLAMP
3 - COOLANT TEMPERATURE SENSOR
4 - FUEL LINE W/BRACKET
5 - THERMOSTAT HOUSING ASSEMBLY
6 - COOLANT HOSE
7 - CLAMP
8 - COOLANT HOSE
9 - GASKET
7 - 16 ENGINEVA

(8) Unplug wiring connector at coolant level sensor
(Fig. 9).
(9) Detach coolant hose at bottom right of radiator
(Fig. 9).
(10) Detach transmission cooler lines at radiator
(Fig. 9).
(11) Remove the radiator trim from the left and
right (Fig. 9).
(12) Remove radiator fan (Refer to 7 - COOLING/
ENGINE/RADIATOR FAN - REMOVAL).
(13) Remove bolts securing intercooler to radiator.
(14) Remove screws and upper radiator trim from
radiator.
(15) Move condenser/intercooler/power steering
cooler assembly forward.
(16) Lift the radiator assembly up and out of the
rubber grommets (Fig. 9).
Fig. 9 RADIATOR ASSEMBLY
1 - COOLANT HOSE 8 - ATF LINE
2 - SENSOR HARNESS CONNECTOR 9 - LEFT RADIATOR TRIM PANEL
3 - HYDRAULIC HOSE 10 - RIGHT RADIATOR TRIM PANEL
4 - CHARGE AIR HOSE 11 - RADIATOR
5 - HYDRAULIC HOSE 12 - ATF LINE
6 - RUBBER GROMMET 13 - COOLANT HOSE
7 - COOLANT HOSE 14 - COOLANT RESERVOIR
7 - 18 ENGINEVA

(17) Take off charge air cooler together with cool-
ing loop of the steering at the radiator (Fig. 10).
(18) Remove bottom radiator trim (Fig. 10).
(19) Detach coolant hose at radiator.
(20) Detach coolant pipe together with coolant
hose at the fan shroud.
(21) Remove radiator fan shroud (Fig. 10).
INSTALLATION
(1) Install fan shroud to radiator (Fig. 10).
(2) Attach coolant pipe with hoses to fan shroud
(Fig. 10).
(3) Attach coolant hose at radiator (Fig. 10).
(4) Install bottom radiator trim (Fig. 10).
(5) Install charge air cooler along with cooling loop
of the power steering, to radiator (Fig. 10).
(6) Install radiator assembly into the rubber grom-
mets (Fig. 9).
(7) Install both right and left side radiator trim
panels (Fig. 9).
(8) Attach the transmission cooler lines (Fig. 9).
(9) Attach coolant hose to the bottom right of the
radiator (Fig. 9).
(10) Attach both power steering hydraulic lines
(Fig. 9).
(11) Connect coolant level sensor electrical connec-
tor (Fig. 9).
(12) Connect coolant hoses to the coolant reservoir,
radiator and water pump (Fig. 9).(13) Attach air intake pipe at the body.
(14) Attach charge air hose at air intake.
(15) Attach charge air hose at turbocharger.
(16) Install A/C condenser.
(17) Install front bumper.
(18) Install front end cross member.
(19) Refill power steering to proper level.
(20) Refill transmission to proper level.
(21) Close radiator drain plug and refill the cooling
system (Refer to 7 - COOLING/ENGINE/COOLANT -
STANDARD PROCEDURE).
(22) Recharge air conditioning (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE).
(23) Run engine until warm and check for leaks.
RADIATOR PRESSURE CAP
DESCRIPTION
All vehicles are equipped with a pressure cap (Fig.
11). This cap releases pressure at some point within
a range of 124-145 kPa (18-21 psi). The pressure
relief point (in pounds) is engraved on top of the cap
The cooling system will operate at pressures
slightly above atmospheric pressure. This results in a
higher coolant boiling point allowing increased radi-
ator cooling capacity. The cap contains a spring-
loaded pressure relief valve. This valve opens when
system pressure reaches the release range of 124-145
kPa (18-21 psi).
A rubber gasket seals the radiator filler neck. This
is done to maintain vacuum during coolant cool-down
and to prevent leakage when system is under pres-
sure.
Fig. 10 RADIATOR AND FAN SHROUD
1 - CLIP
2 - SHROUD
3 - RADIATOR
4 - BOTTOM RADIATOR TRIM PANEL
5 - CHARGE AIR COOLER
6 - TOP RADIATOR TRIM PANEL
7 - POWER STEERING COOLER LOOP
VAENGINE 7 - 19