Infiniti I30 (A33). Manual — part 547
SLC116B
9.
Tighten M8 bolts by turning half turn alternately until they reach
timing chain rear case.
I
In order to prevent damages to water pump or timing chain rear
case, do not tighten one bolt continuously. Always turn each
bolt half turn each time.
10. Lift up water pump and remove it.
I
When lifting up water pump, do not allow water pump gear to
hit timing chain.
SLC943A
INSPECTION
NHLC0019
1.
Check for badly rusted or corroded body assembly.
2.
Check for rough operation due to excessive end play.
SLC244B
INSTALLATION
NHLC0020
1.
Apply engine oil and coolant to O-rings as shown in the figure.
GI
MA
EM
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ENGINE COOLING SYSTEM
Water Pump (Cont’d)
LC-13
SLC031B
2.
Install water pump.
I
Do not allow cylinder block to nip O-rings when installing
water pump.
SLC944A
3.
Before installing, remove all traces of liquid gasket from mat-
ing surface of water pump cover and chain tensioner cover
using a scraper.
Also remove traces of liquid gasket from mating surface of
front cover.
SLC945AA
4.
Apply a continuous bead of liquid gasket to mating surface of
chain tensioner cover and water pump cover.
SLC156B
5.
Return the crankshaft pulley to its original position by turning
it 20° forward.
SLC961A
6.
Install timing chain tensioner, then remove the stopper pin.
I
When installing the timing chain tensioner, engine oil
should be applied to the oil hole and tensioner.
I
After starting engine, let idle for three minutes, then rev
engine up to 3,000 rpm under no load to purge air from the
high-pressure chamber of the chain tensioners. The
engine may produce a rattling noise. This indicates that
air still remains in the chamber and is not a matter of
concern.
7.
Install drain plug on cylinder block.
8.
Reinstall any parts removed in reverse order of removal.
ENGINE COOLING SYSTEM
Water Pump (Cont’d)
LC-14
Thermostat
REMOVAL AND INSTALLATION
NHLC0021
SLC310B
SLC962AA
1.
Drain coolant from drain plugs on radiator and both sides of
cylinder block.
2.
Remove drive belts and idler pulley bracket.
3.
Remove water pump drain plug on pump side of cylinder block.
4.
Remove lower radiator hose.
5.
Remove water inlet and thermostat assembly.
I
Do not disassemble water inlet and thermostat. Replace
them as a unit, if necessary.
SLC948A
6.
Install thermostat with jiggle valve facing upward.
I
After installation, run engine for a few minutes, and check
for leaks.
I
Be careful not to spill coolant over engine compartment.
Use a rag to absorb coolant.
SLC949A
INSPECTION
NHLC0022
1.
Check valve seating condition at ordinary room temperatures.
It should seat tightly.
2.
Check valve opening temperature and maximum valve lift.
Standard
Valve opening temperature
82°C (180°F)
Valve lift
More than 8.6 mm/95°C
(0.339 in/203°F)
GI
MA
EM
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ENGINE COOLING SYSTEM
Thermostat
LC-15
3.
Then check if valve closes at 5°C (9°F) below valve opening
temperature.
Water Control Valve
REMOVAL AND INSTALLATION
NHLC0032
SLC242B
1.
Air relief plug
2.
Water connector
3.
Water control valve
4.
Water outlet
5.
Water hose
6.
Cylinder block water outlet
1.
Drain coolant from drain plugs on radiator and both sides of
cylinder block.
2.
Remove water connector and water control valve.
3.
Install water control valve and water connector.
I
After installation, run engine for a few minutes, and check
for leaks.
I
Be careful not to spill coolant over engine compartment.
Use a rag to absorb coolant.
SLC252B
INSPECTION
NHLC0033
1.
Check valve seating condition at ordinary room temperatures.
It should seat tightly.
2.
Check valve opening temperature and maximum valve lift.
Standard
Valve opening temperature
95°C (203°F)
Valve lift
More than 8.0 mm/108°C
(0.315 in/226°F)
ENGINE COOLING SYSTEM
Thermostat (Cont’d)
LC-16
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