Question about Nissan Altima
THE 2.4L AND 2.5L ENGINES.YOU HAVE TO SAFELY RAISE VECHICLE SUPPORT IT USING JACK STANDS.YOU HAVE TO REMOVE THE RIGHT HAND SPLASH SHIELD.THEN LOOSEN WATER PUMP PULLEY BOLTS LEAVE DRIVE BELT IN PLACE TO KEEP WATER PULLEY FROM TURNING WHILE LOOSEN PULLEY BOLTS.THEN YOU HAVE TO MOVE AC COMPRESSOR DONT DISCONNECT ANY REFRIGERANT LINES.JUST SET IT ASIDE THE ALTERNATOR AND ITS MOUNT ALSO HAS TO MOVED.THEN YOU ARE AT WATER PUMP.NOW THE 3.5L ENGINE WATER PUMP IS IN A TOUGH SPOT.YOU HAVE TO REMOVE ENGINE SPLASH SHIELD.REMOVE THE SUBFRAME BRACKET FROM THE RIGHT SIDE OF THE SUBFRAME ASSEMBLY. REMOVE THE INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM FROM THE ENGINE COMPARTMENT.REMOVE THE IPDMER UPPER COVER AND HARNESS COVER RELEASE THE TWO CLIPS.DISCONNECT THE ELECTRICAL CONNECTORS AND LIFT THE ASSEMBLY FROM THE CASE.REMOVE THE RADIATOR SHROUDS REMOVE THE DRIVE BELTS.REMOVE THE ENGINE COOLING FAN.REMOVE THE RADIATOR AND THE COOLANT RESERVOIR.REMOVE THE IDLER PULLEY AND THE POWER STEERING AND ALTERNATOR ADJUSTMENT BRACKETS.REMOVE THE FRONT ENGINE MOUNT.REMOVE COOLANT DRAIN PLUG FROM THE WATER PUMP SIDE OF THE ENGINE BLOCK.REMOVE CHAIN TENSIONER COVER AND THE WATER PUMP COVER FROM THE ENGINE FRONT COVER.REMOVE THE CHAIN TENSIONER.PULL THE LEVER DOWN TO RELEASE THE PLUNGER STOPPER TAB.INSERT A STOPPER PIN INTO THE TENSIONER BODY HOLE TO RETAIN THE LEVER IN THE RELEASED.NO CHAIN TENSION POSITION.MOVE THE PLUNGER INTO THE TENSIONER BY PRESSING THE CHAIN GUIDE AND PUSHING WITH A SCREWDRIVER.MAKE A GAP BETWEEN THE WATER PUMP GEAR AND THE TIMING CHAIN BY ROTATING THE CRANKSHAFT PULLEY 20 DEGREES COUNTERCLOCKWISE.REMOVE THE THREE WATER PUMP MOUNTING BOLTS.INSTALL 2 BOLTS SIZE M8 1.25 X 50 MM INTO THE WATER PUMP BOLT HOLES AND TIGHTEN THEM EQUALLY UNTIL THEY BOTTOM AGAINST THE CHAIN COVER.IT WILL BE NECESSARY TO ROTATE THE WATER PUMP SLIGHTLY TO ALLOW THE BOLTS TO DRIVE AGAINST THE REAR TIMING CHAIN CASE COVER INSTEAD OF THE BOLT HOLES.REMOVE THE WATER PUMP.CLEAN THE SEALANT FROM THE MATING SURFACE AND REPLACE THE O-RINGS.INSTALL THE OUTER O-RING WITH THE WHITE PAINT MARK FACING THE FRONT OF THE ENGINE AND THE INNER O-RING BLACK NEXT.APPLY A LIGHT AMOUNT OF OIL TO THE O-RINGS.TIGHTEN THE WATER PUMP BOLTS TO 62 - 89 INCH POUNDS.TIGHTEN WATER PUMP BOLTS EVENLY DONT OVER TIGHT OR YOU WILL DAMAGE WATER PUMP AND HAVE LEAKS.REINSTALL THE POWER STEERING AND ALTERNATOR ADJUSTMENT BRACKETS AND ANY OTHER COMPONENTS REMOVED FOR ACCESS TO THE WATER PUMP.REFILL THE COOLING SYSTEM.RUN THE ENGINE AND CHECK FOR LEAKS.YOU NEED TO BUY THE HAYNES REPAIR MANUAL.SO THE PHOTOS WILL HELP YOU WHEN REMOVING AND INSTALLING WATER PUMP.
Posted on Nov 14, 2009
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Posted on Jan 02, 2017
sounds like where the water pump meets the engine has warped or the gasket has been blown. Since the water pump has to come out anyway to fix it then i would suggest replacing the pump. It is 30 to 40 more.
Posted on Jul 09, 2009
SOURCE: how do you change a
Just did this over the weekend with my 2001 Nissan Altima. First, remove the negative battery cable to prevent shorting. Drain the radiator by removing the drain screw. To gain access to the water pump, I had to remove the upper radiator hose to the engine, unattach the reserve tank hose from the radiator and take out the reserve tank, remove the alternator and the lower alternator bracket because it blocks access to one of the water pump bolts and move the serpentine belt out of the way. This should give you free access to the six bolts that attach the water pump. You will probably have to hit the water pump with a rubber mallet or some other tool to break the sealant on the water pump, but it should then just come off. The hardest part of the job for me was removing the bolts for the alternator bracket because they were on extremely tight. Reinstall your new water pump after applying sealant to all parts that will attach to the bracket, and your ready to put it all back together. If you have the right tools, this should take probably 4 or 5 hours to complete.
Posted on Aug 09, 2010
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