CO-1
ENGINE COOLING SYSTEM
B ENGINE
CONTENTS
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Revision: 2006 November2007 350Z
ENGINE COOLING SYSTEM
PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
Precautions for Battery Service ................................ 2
Precautions for Liquid Gasket .................................. 2
REMOVAL OF LIQUID GASKET SEALING .......... 2
LIQUID GASKET APPLICATION PROCEDURE ..... 2
PREPARATION ........................................................... 4
Special Service Tools ............................................... 4
Commercial Service Tools ........................................ 5
OVERHEATING CAUSE ANALYSIS .......................... 6
Troubleshooting Chart .............................................. 6
COOLING SYSTEM .................................................... 8
Cooling Circuit .......................................................... 8
System Chart ........................................................... 9
ENGINE COOLANT .................................................. 10
Inspection ............................................................... 10
LEVEL CHECK ................................................... 10
LEAK CHECK ..................................................... 10
Changing Engine Coolant ...................................... 10
DRAINING ENGINE COOLANT ......................... 10
REFILLING ENGINE COOLANT ......................... 11
FLUSHING COOLING SYSTEM ......................... 12
RADIATOR ................................................................ 13
Removal and Installation ........................................ 13
REMOVAL ........................................................... 13
INSTALLATION ................................................... 15
INSPECTION AFTER INSTALLATION ............... 15
Checking Radiator Cap .......................................... 15
Checking Radiator .................................................. 15
RADIATOR (ALUMINUM TYPE) .............................. 17
Disassembly and Assembly ................................... 17
PREPARATION ................................................... 17
DISASSEMBLY ................................................... 17
ASSEMBLY ......................................................... 18
INSPECTION ...................................................... 20COOLING FAN .......................................................... 21
Removal and Installation ........................................ 21
REMOVAL ........................................................... 21
INSTALLATION ................................................... 21
Disassembly and Assembly .................................... 22
DISASSEMBLY ................................................... 22
INSPECTION AFTER DISASSEMBLY ................ 22
ASSEMBLY ......................................................... 22
WATER PUMP .......................................................... 23
Removal and Installation ........................................ 23
REMOVAL ........................................................... 23
INSPECTION AFTER REMOVAL ....................... 24
INSTALLATION ................................................... 24
INSPECTION AFTER INSTALLATION ................ 25
WATER INLET AND THERMOSTAT ASSEMBLY .... 26
Removal and Installation ........................................ 26
REMOVAL ........................................................... 26
INSPECTION AFTER REMOVAL ....................... 26
INSTALLATION ................................................... 27
INSPECTION AFTER INSTALLATION ................ 27
WATER OUTLET AND WATER PIPING ................... 28
Removal and Installation ........................................ 28
REMOVAL ........................................................... 28
INSTALLATION ................................................... 29
INSPECTION AFTER INSTALLATION ................ 29
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 30
Standard and Limit .................................................. 30
ENGINE COOLANT CAPACITY (APPROXI-
MATE) .................................................................. 30
RADIATOR .......................................................... 30
THERMOSTAT .................................................... 30
ENGINE COOLANT
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Revision: 2006 November2007 350Z
3. Remove reservoir tank as necessary, and drain engine coolant and clean reservoir tank before installing.
4. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to CO-12, "
FLUSHING COOLING SYSTEM" .
REFILLING ENGINE COOLANT
1. Install reservoir tank if removed, and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring.
If water drain plugs on cylinder block are removed, close and tighten them. Refer to EM-111,
"ASSEMBLY" .
2. Make sure that each hose clamp has been firmly tightened.
3. Remove air relief plug (1) on heater hose.
4. Fill radiator and reservoir tank to specified level.
Pour engine coolant through engine coolant filler neck
slowly of less than 2 (2-1/8 US qt, 1-3/4 lmp qt) a minute
to allow air in system to escape.
Use Genuine NISSAN Long Life Antifreeze/Coolant or
equivalent mixed with water (distilled or demineralized).
Refer to MA-11, "
RECOMMENDED FLUIDS AND LUBRI-
CANTS".
When engine coolant overflows air relief hole on heater hose,
install air relief plug with new O-ring.
5. Install radiator cap.
6. Warm up until opening thermostat. Standard for warming-up time is approximately 10 minutes at 3,000
rpm.
Make sure thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat engine.Radiator drain plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)
2 : Heater hose
: Vehicle front
PBIC5029E
Engine coolant capacity
(with reservoir tank at “MAX” level)
: Approx. 9.0 (9 - 1/2 US qt, 7- 7/8 lmp qt)
PBIC5073E
Reservoir tank capacity (at “MAX” level)
: 0.8 (7/8 US qt, 3/4 lmp qt)
Air relief plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)
SMA412B
CO-30
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2006 November2007 350Z
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00100
Standard and LimitNBS00025
ENGINE COOLANT CAPACITY (APPROXIMATE)
Unit: (US qt, Imp qt)
RADIATOR
Unit: kPa (kg/cm2 , psi)
THERMOSTAT
Engine coolant capacity (With reservoir tank at “MAX” level) 9.0 (9-1/2, 7- 7/8)
Reservoir tank engine coolant capacity (At “MAX” level) 0.8 (7/8, 3/4)
Cap relief pressureStandard 108 - 127 (1.1 - 1.3, 16 - 18)
Limit 88 (0.9, 13)
Leakage test pressure157 (1.6, 23)
Valve opening temperature 82°C (180°F)
Maximum valve lift 9.0 mm / 95°C (0.354 in / 203°F)
Water closing temperature 77°C (171°F)