Question about 1995 Nissan Maxima

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I am replacing the water pump of my 1995 3.0 v6 infinity (same as altima) but my son removed the chain with out marking it, now I need to set the timing. How do I do this? There's marking on the valve sprockets and on the chain. Thanks

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This should be the same engine as the Maxima. If that is the case, there is no reason to remove timing chain or get it out of time. The pump is driven by the timing chain, but is not "in time".

The pump is under its own cover. The chain tensioner is under its own cover. The pump is removed after the tension is released on the chain, the tensioner pinned in its retracted position to take tension off chain, and the crank is rotated about 20 degrees counter clockwise to slacken the chain at the pump sprocket without coming off the cam sprockets. Then, the pump is remove by removing its mounting bolts and then screwing in three long M8 bolts as jack bolts into 3 holes (carefully and evenly) to jack out pump. The pump is sealed from the engine case by two o-rings that must be replaced. I think the pump mount bolts are sealed with silicone when replaced. I would get a Haynes or other reliable manual.

If you truly have to reset or check timing, definitely get a book.

Posted on Jan 15, 2009

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REMOVAL - 2.7L

NOTE: It is normal for the water pump to weep a small amount of coolant from the weep hole (black stain at weep passage). Do not replace the water pump if this condition exists. Replace the water pump if a heavy deposit or a steady flow of engine coolant is evident on side of the cylinder block from the weep hole passage (shaft seal failure). Be sure to perform a thorough analysis before replacing water pump.

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CAUTION: When the timing chain is removed and the cylinder heads are still installed, DO NOT rotate the camshafts or crankshaft without first locating the proper crankshaft position. Failure to do so will result in valve and/or piston damage.
Remove power steering pump and bracket as an assembly. Do not disconnect power steering lines from pump. Reposition pump and support with suitable retaining strap.
Remove primary timing chain tensioner retainer cap and tensioner from right cylinder head (PRIMARY TIMING CHAIN TENSIONER).
Disconnect and remove camshaft position sensor from left cylinder head (TIMING DRIVE SYSTEM - PRIMARY).
Remove timing chain guide access plugs from cylinder heads (TIMING DRIVE SYSTEM - PRIMARY).

NOTE: When camshaft sprocket bolts are removed, the camshafts will rotate in a clockwise direction.
Starting with the right camshaft sprocket, remove the sprocket attaching bolts. Remove camshaft damper (if equipped) and sprocket (TIMING DRIVE SYSTEM - PRIMARY).
Remove left side camshaft sprocket attaching bolts and remove sprocket (TIMING DRIVE SYSTEM - PRIMARY).
Remove lower chain guide and tensioner arm (TIMING DRIVE SYSTEM - PRIMARY).
Remove the primary timing chain.

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Zoom Image link HERE


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Remove bolts attaching water pump to block (WATER PUMP - 2.7L).
Remove water pump and gasket.

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This is the proceedure from the chrysler shop manual if you have any problems let me know. Do yourself a favor and avoid potential bent valves!!!

REPLACE THE PRIMARY CHAIN TENSIONER ASSEMBLY, DON'T WASTE YOUR TIME ATTEMPTING TO RESET IT, IT DOESN'T ALWAYS WORK.

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Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

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