Doing a timing chain and vct on right bank nearest
04 Nissan Murano Doing a timing chain and vct on right bank nearest to fire wall. I need to remove 2nd oil pan (large pan) as i've got it loose. The problem I'm having is the transfer case is preventing it from coming down, the dealer said the transfer case must be removed. I have removed 8 t/case bolts (after draining oil and removing intermediate shaft)but the t/case is still tight. Am I missing bolts to be removed? or is it just on dowels ?
Thanks avmcgyver (ex nissan tech, not worked on 1 of these )
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Re: Doing a timing chain and vct on right bank nearest
You do not need to remove the upper oil pan. There are 2 bolts that go through the oil pan into the front cover that has to be removed. You do not need to remove the transfer case to remove the front timing cover. After you have the bolts under the front cover that go through that lower oil pan, and the bolts all around the timing cover off, just work the cover slowly till it pops free.
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Check your owner's manual for the recommended mileage for
replacing your timing chain. Replacement for a Nissan Altima is 60,000
Locate the timing chain. Replace it if the automatic chain adjuster (also known as the tensioner) is damaged or worn.
Drain the cooling system and disengage the negative battery
cable. Undo the spark plug wires and set the No. 1 piston at "Top Dead
Center" (TDC) of the compression stroke.
Disconnect the engine undercover, vacuum and fuel hoses,
harness and connectors, drive belts, power steering reservoir,
alternator and bracket, upper radiator hose, air duct, front exhaust
tube, intake manifold collector supports, collector and exhaust manifold
and the distributor.
Prop up the oil pan and take out the front engine mounting,
the valve cover, camshaft sprockets, cam bearing caps, camshafts,
cylinder head bolts (reverse the installation order), cam sprocket
cover, upper chain tensioner, chain guides and chain, idler sprocket
bolt, cylinder head, intake manifold and cylinder head gasket and the
steel oil pan.
Place a steel cutter between the steel and aluminum oil
pans. Slip the cutter around the oil pan's edge. Disengage the steel oil
pan, baffle plate, oil strainer and the front tube.
Secure the car on jack stands and place a seal cutter in
between the oil pan and cylinder block. Slip the cutter around the oil
Install Your Timing Chain
Reconnect the crankshaft sprocket, oil pump drive spacer,
idler sprocket and lower timing chain. Position the lower timing chain
on the sprockets and line up the mating marks.
Rub on an unbroken bead of liquid gasket and put in a new
front cover and oil seal. Secure the bolt at 105 to 112 foot pounds
(142 to 152 Nm).
Eliminate any old material from the pan and cylinder block
mounting surfaces. Rub on a 3.5 to 4.5mm bead of liquid gasket over the
oil pan and cylinder block.
Attach the upper timing chain to the idler sprockets and secure the cylinder head bolts.
Refill the cooling system and add clean oil in the engine.
Hook up the negative battery cable and any other disconnected parts or items. Start the engine and look for leaks.
Tips & Warnings
Procedures for replacing timing chains in Nissan Altimas vary slightly depending on engine size.
Make sure the new timing chain matches the chain you are removing.
I really hope you know what you're getting into.....Big & detailed job. I went on and posted the instructions as far as removal and installation of the timing chain. There is a whole other section that you need as far as removing the oil pan and strainer but way to much to post on here at this point. Anyhow, it's a 2 piece oil pan and just to let you know alot of the parts like the timing chain cover, oil pan, the cover on the timing chain cover does not have gaskets and Nissan doesn't either. You have to use some RTV and don't go cheap, get the good stuff because all the work that is involved in this you don't want to have to repeat because of a leak. Also the oil pump is in the timing chain cover and Nissan has had some problems in the past with them. I would suggest going online and finding a new oil pump that comes pre-installed in a new timing chain cover. You can pick the whole assembly including the cover for about $150.00 and worth it. Wish you were here I have one ready to go. Anyhow, email me at firstname.lastname@example.org and what I can do is send you the engine management section of my service manual in a PDF so you have the info on the oil pan removal.....You need it. It will also have all the stuff I am posting below so you can make it big enough to see or even print out if need be and no there isn't a cost for it. I'm in a good mood....lol. I hope this helps. Here is the timing chain instructions for you.
The VCT solenoid is located under the valve cover toward the front. There are a total of two solenoids, one on each bank (side). If you look at the valve cover you will see a harness and connector going to the solenoid with the top of the solenoid sticking through the valve cover. Remove the valve cover for the affected side, place a shop rag at the timing chain area to keep debris or bolts from falling in. Unfasten the solenoid and simply pull it straight out. Replace the solenoid, remove the rag and reinstall the cover. Be sure to remove the rag :o)
That being said, the main cause of VCT codes or a noise from the VCT is caused by the camshaft phaser. This is the mechanical part of the VCT system and mounts to the front of the camshaft. It operates by oil pressure that is controlled by computer signals to the solenoid.
If the solenoid is sticking, I've had luck taking a 12 volt power source and applying power and ground to the two pins at the solenoid, touching the terminals a few times. This sometimes frees the solenoid and brings the vehicle back to normal cam timing. A fresh oil change with a factory motorcraft filter will help keep the system clean and free from VCT concerns.
Some aftermarket oil filters will start to come apart, sending paper into the oil channels. This affects the oil pressure, the very pressure that the VCT system needs to work. I hope this info helps. If for any reason you can't give four thumbs up, please request more information. Good luck!
Hello windy....There are a few thing on the murano that could cause this... one is the exhaust gussets that go to the bottom of the oil pan to the exhaust, they can crack and cause a rattling noise. Also I have seen the rear exhaust heat shield spot welds come loose and cause a rattling noise, from exhaust manifold down pipe on the cat. converter. I would check them first, also the park brake cable will lose tension and rattle on the undercarriage. A more serious problem would be the timing chain and/or chain tensioners...these are known to make noise around 50-60k. The tensioners are operated from oil pressure, the face gets worn, the chain stretches and it results in a rattle or a slapping noise Useing a full synthetic oil with regular maintaince will help prevent premature wear. Good luck, i hope this helps..please rate me a fixya.
When you put incorrect fluid into a transmission it is absorbed by the clutch material (yes there are multiple clutches inside)...therefore it may not be possible to restore proper operation without replacing all internal friction material. One thing though: When you drop the pan to remove the oil, you are only changing about half of it.(the remainder is inside the torque converter) If you change it multiple times,permitting it to idle, then changing shift positions, you can reduce the concentration of incorrect fluid by doing so. You don't need to replace the filter or the gasket while doing this, and don't even need to pay attention to any minor pan leaks. It will require a lot of oil though. If near-normal operation does not return after three changes I'd give up. If it does get better, do it one more time and add some lucas additive in the final change, then service again in about 4,000 miles. The length of time driven and miles you drove before finding your mistake are important. If either are more than one day or a few miles, don't bother, and just have the unit rebuilt. One thing for sure is that you will never make that mistake again!!! Good luck!