Timing Chain Cover, Chain, Sprockets, replacement

May be its problem with timing chain and it has to be inspected and replaced.Or its possible that timing chain is got misaligned.

There are few help,links provided related to timing chain assembly and dis-assembly. Go through it and confirm proper inspecting of timing chain.

Click the required help link below:----How to Replace Timing Chain Cover & Seal on Audi A4 ? http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-timing-chain-cover-seal.html
----------1982 Toyota Pickup: Set ignition timing, engine overheating, timing chain issue, dist off? http://whatisbyme.blogspot.in/2012/05/1982-toyota-pickup-set-ignition.html
----------How to Remove Timing Chain Cover and Seal on Toyota Previa?

http://technoanswers.blogspot.com/2011/12/how-to-remove-timing-chain-cover-and.html

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How to Remove Timing Chain and Gears on Toyota Previa?

http://technoanswers.blogspot.com/2011/12/how-to-remove-timing-chain-and-gears-on.html

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Ford Mondeo ST220 camshaft Timing specifications? http://technoanswers.blogspot.in/2012/02/ford-mondeo-st220-camshaft-timing.html
------------Replacing Timing Chain Cover For 2009 Ford?

http://repairhelpcenter.blogspot.in/2012/03/replacing-timing-chain-cover-ford-2009.html

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Timing Chains & Front Cover Removal on 2008 Ford Taurus? http://repairhelpcenter.blogspot.in/2012/03/timing-chains-front-cover-removal-on.html
----------How to Replace Timing Chain Cover, Chain, Sprockets, & Seal On Ford Taurus? http://repairhelpcenter.blogspot.in/2012/03/how-to-replace-timing-chain-cover-chain.html
---------How to Replace Timing Chain & Sprockets on Ford Windstar? http://repairhelpcenter.blogspot.in/2012/03/how-to-replace-timing-chain-sprockets.html
---------Timing Chain & Sprockets Replacing on Ford, Mercury and Lincoln? http://fordrepairhelp.blogspot.in/2012/03/timing-chain-sprockets-replacing-on.html
----------How to Replace Timing Chain & Sprockets on Ford Edge and Lincoln MKX? http://howtobyme.blogspot.in/2012/03/how-to-replace-timing-chain-sprockets.html
------How To Replace Timing Chain, Sprockets & Front Cover on Ford Expedition and Lincoln Navigator? http://repairhelpcenter.blogspot.in/2012/03/how-to-replace-timing-chain-sprockets_356.html
---------Timing Chain, Sprockets, Front Cover & Seal removal for Ford Mustang? http://schematicsdiagram.blogspot.in/2012/03/timing-chain-sprockets-front-cover-seal.html
---------How to Replace Timing Chain on Buick LaCrosse? http://howtobyme.blogspot.in/2012/03/how-to-replace-timing-chain-on-buick.html
---------These details will help.For more help keep updated.Thanks.

Instructions

1. Remove Your Timing Chain
   • 1 Check your owner's manual for the recommended mileage for replacing your timing chain. Replacement for a Nissan Altima is 60,000 miles.
     
   • 2 Locate the timing chain. Replace it if the automatic chain adjuster (also known as the tensioner) is damaged or worn.
     
   • 3 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.
     
   • 4 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.
     
   • 5 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.
     
   • 6 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.
     
   • 7 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 pan's edge.
     
   Install Your Timing Chain
   • 8 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.
     
   • 9 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).
     
   • 10 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.
     
   • 11 Attach the upper timing chain to the idler sprockets and secure the cylinder head bolts.
     
   • 12 Refill the cooling system and add clean oil in the engine.
     
   • 13 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.
  

Timing Chain and Gears REMOVAL & INSTALLATION 2.2L Engine Fig. 1: The timing marks on the sprockets should be in alignment. If not, turn the crankshaft until the marks are aligned
Fig. 2: The timing chain tensioner is retained by a Torx head bolt (1) and a regular hex head bolt (2)
Fig. 3: Unfasten the camshaft sprocket bolt
Fig. 4: Remove the camshaft sprocket and the timing chain at the same time . . .
Fig. 5: . . . then remove the tensioner assembly
Fig. 6: Compress the tensioner spring and insert a cotter pin or nail in the hole provided to hold the tensioner in position

1. Disconnect the negative battery cable.
2. Remove the front cover as previously detailed.
3. Place the No. 1 piston at TDC of the compression stroke so that the marks on the camshaft and crankshaft sprockets are in alignment (see illustration).
4. Loosen the timing chain tensioner nut as far as possible without actually removing it.
5. Remove the camshaft sprocket bolts and remove the sprocket and chain together. If the sprocket does not slide from the camshaft easily, a light blow with a soft mallet at the lower edge of the sprocket will dislodge it.
6. Using a suitable gear puller, remove the crankshaft sprocket. To install:
   
7. Press the crankshaft sprocket back onto the crankshaft.
8. Install the timing chain over the camshaft sprocket and then around the crankshaft sprocket. Make sure that the marks on the two sprockets are in alignment (see illustration). Lubricate the thrust surface with Molykote® or its equivalent.
9. Align the dowel in the camshaft with the dowel hole in the sprocket and then install the sprocket onto the camshaft. Use the mounting bolts to draw the sprocket onto the camshaft and then tighten to 66-68 ft. lbs. (91-95 Nm).
10. Lubricate the timing chain with clean engine oil. Tighten the chain tensioner.
11. Installation of the remaining components is in the reverse order of removal. Fig. 7: Exploded view of the timing chain and sprockets - 2.2L OHV engine
    

Hi Friend:

Your Timing Chain Tensioner is located in the Lower Front of your engine.

#1) you'll have to disconnect your negative Battery cable.

#2) Remove the Top Engine cover to give you better access to the Front of Engine.

#3) Then you'll need to remove your alternator and with wiring attached put it off to the Side you might have to tie it with a wire to secure it.

#4) then you'll need to remove your Power Steering Leave the Lines on it and Put it to the sideas well , Tie off if necessary.

#5) then Jack up the front of your car,make sure you Put Good Stands under the car to keep it secure.while you work under it.

#6) then remove the TWO front Oil Pan Bolts Only the very 2-Front ones.

#7) Then directly above the Oil pan front of the Engine you'll see your Crank Shaft Pulley Remove it, You will need a Puller to Remove it.then the Timing Chain Cover, There are Several bolts Holding it on to the front of the Engine.

#8) Remove ALL the Bolts on Timing over, then Take cover Off,It could be a Little Stubborn ,if All bolts are out for sure, Take a Small plastic mallet and Tap the Cover Easily,until it comes off.

#9) Now before you remove anything else there is a Timing Mark on the Cam Shaft and one on the Crank Shaft,NOTE: BESURE you line them marks up,The Cam Shaft Mark should be pointing Straight Down--And the Crankshaft Mark needs to be Pointing Straight up.and Lined up with the Top Timing Mark.If the are Not

NOTE: Rotate the Engine by Hand Turning the Sprockets until they are LINED Up.

Then Take off the Top Cam Shaft Mounting Bolts,then Pull Sproket and timing Chain at the Same Time.

Then Loosen the Chain Tensioner Bolt with out taking it ALL the Way OUT. then remove your Chain Tensioner.

If your this far i Recommend that you Replace The Timing Chain,Cam Sproket and Crankshaft Sproket as well.

If not the Install your new Chain Tensioner,And Just Simply Reverse the Un-Install Directions.To Put All back Together.

Do Replace the Timing Cover Seal. Using Proper Seal Remover and Installer.

Also before you put your Timing cover back on CLEAN the Surfaces of the Engine and the Cover.And Use a Gasket Sealer and Mount to Block ==Lining Up ALL your Timing Cover Bolt Holes. Let it set a Short time a Few Minutes at Least. To prevent Slipping when installing your Timing Case Cover.

1- Last Thing Torque your Timing Chain Tensioner at 89 Inch Pounds.Which rewuires a Torque Wrench.

And Torque ALL your Timing Cover Bolts at 97 Inch Pounds.Do NOT Over Tighten You'll Strip them.

MAKE Sure the Timing Marks are Still lined up.

This will get your Timing Chain Tensioner Replaced. Thanks for using FixYa From: d_hubbs

Timing Chain and Gears REMOVAL & INSTALLATION 2.2L Engine Fig. 1: The timing marks on the sprockets should be in alignment. If not, turn the crankshaft until the marks are aligned
Fig. 2: The timing chain tensioner is retained by a Torx head bolt (1) and a regular hex head bolt (2)
Fig. 3: Unfasten the camshaft sprocket bolt
Fig. 4: Remove the camshaft sprocket and the timing chain at the same time . . .
Fig. 5: . . . then remove the tensioner assembly
Fig. 6: Compress the tensioner spring and insert a cotter pin or nail in the hole provided to hold the tensioner in position

1. Disconnect the negative battery cable.
2. Remove the front cover as previously detailed.
3. Place the No. 1 piston at TDC of the compression stroke so that the marks on the camshaft and crankshaft sprockets are in alignment (see illustration).
4. Loosen the timing chain tensioner nut as far as possible without actually removing it.
5. Remove the camshaft sprocket bolts and remove the sprocket and chain together. If the sprocket does not slide from the camshaft easily, a light blow with a soft mallet at the lower edge of the sprocket will dislodge it.
6. Using a suitable gear puller, remove the crankshaft sprocket. To install:
   
7. Press the crankshaft sprocket back onto the crankshaft.
8. Install the timing chain over the camshaft sprocket and then around the crankshaft sprocket. Make sure that the marks on the two sprockets are in alignment (see illustration). Lubricate the thrust surface with Molykote® or its equivalent.
9. Align the dowel in the camshaft with the dowel hole in the sprocket and then install the sprocket onto the camshaft. Use the mounting bolts to draw the sprocket onto the camshaft and then tighten to 66–68 ft. lbs. (91–95 Nm).
10. Lubricate the timing chain with clean engine oil. Tighten the chain tensioner.
11. Installation of the remaining components is in the reverse order of removal. Fig. 7: Exploded view of the timing chain and sprockets — 2.2L OHV engine
    

Timing Chain, Sprockets, Front Cover and Seal REMOVAL & INSTALLATION 2.5L and 4.0L Engines

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   • Negative battery cable
   • Accessory drive belt
   • Cooling fan and shroud
   • Crankshaft damper
   • Front crankshaft seal
   • Accessory brackets
   • Front cover
   • Oil slinger
3. Rotate the crankshaft so that the timing marks are aligned. Fig. 1: Timing chain alignment marks — 2.5L and 4.0L engines
   
   
4. Remove the timing chain and sprockets. To install:
   
5. For 2.5L engines, turn the timing chain tensioner lever to the unlock (down) position. Pull the tensioner block toward the tensioner lever to compress the spring. Hold the block and turn the tensioner lever to the lock (up) position. Fig. 2: Timing chain tensioner — 2.5L engines
   
   
6. Install the timing chain and sprockets with the timing marks aligned. Tighten the camshaft sprocket bolt to 80 ft. lbs. (108 Nm) for 2.5L engines or to 50 ft. lbs. (68 Nm) for 4.0L engines.
7. For 2.5L engines, release the timing chain tensioner.
8. Install or connect the following:
   • Oil slinger
   • New front crankshaft seal to the front cover
   • Front cover, using a new gasket
   • Timing Case Cover Alignment and Seal Installation Tool 6139 in the crankshaft opening to center the front cover Fig. 3: Timing Case Cover Alignment and Seal Installation Tool 6139 — 2.5L and 4.0L engines
     
   
   
9. Tighten the front cover bolts as follows:
   1. Step 1: Cover-to-block 1⁄4 inch bolts to 60 inch lbs. (7 Nm)
   2. Step 2: Cover-to-block 5⁄16 inch bolts to 16 ft. lbs. (22 Nm)
   3. Step 3: Oil pan-to-cover 1⁄4 inch bolts to 85 inch lbs. (9.5 Nm)
   4. Step 4: Oil pan-to-cover 5⁄16 inch bolts to 11 ft. lbs. (15 Nm)
10. Install or connect the following:
    • Accessory brackets
    • Crankshaft damper. Tighten the bolt to 80 ft. lbs. (108 Nm).
    • Cooling fan and shroud
    • Accessory drive belt
    • Negative battery cable
11. Start the engine and check for leaks.

For 1996 Chevrolet Cavalier 2.2L SFI OHV 4cyl the check the next Head Bolt Torque sequence...

------------ front | 8 4 1 5 9 | of | | engine | 7 3 2 6 10 | ------------

Step 1: torque long bolts 8,4,1,5, & 9 to 46 Ft/Lbs torque short bolts 7,3,2,6, & 10 to 43 Ft/Lbs
Step 2: torque all bolts an additional 90 degrees Recheck final torque in sequence

*** CAUTION *** engine uses Torque To Yield head bolts (TTY) that permanently stretch during the initial installation. New head bolts must be used when cylinder head is replaced or re-installed to obtain proper torque.

Hope helps (remnember rated this).

During most engine rebuilds, a completely new timing assembly should be installed. If wear exists on any component, replacement of the entire assembly is necessary. Wear in the chain, gears, or sprockets means a timing lag, which results in poor engine performance.
The timing chain or belt is generally installed with the gears in their correct positions. Before installing a new chain, soak it in oil.
OHC (Overhead Cam) Engines
Some OHC engines use a chain drive; others use a belt drive. Removing the cover on some OHC engines that have timing chains is more difficult, because the cover often fits between the oil pan and the cylinder head. There are special procedures for replacing cam timing components in these engines.
Before a chain repair job, perform a leakage test on non-freewheeling engines to check for bent valves, so that an accurate repair estimate can be made.
OHV (Overhead Valve) Pushrod Engines
On many OHV pushrod engines, the crankshaft sprocket is installed on the crankshaft nose and the crankshaft is rotated to position piston #1 at TDC. At this point, a mark stamped onto the crankshaft sprocket is pointing directly upward (toward the camshaft).
The camshaft sprocket is then temporarily bolted to the cam and used to rotate the cam until a mark stamped on the cam sprocket is pointing directly downward (toward the crankshaft). The sprocket is then removed from the cam (without allowing the cam to rotate).
The timing chain is looped over the cam gear, the mark on the cam gear is positioned directly downward, and the chain is looped around the crankshaft sprocket. When the cam sprocket is attached to the cam, the timing marks on the crank and cam sprockets should be pointing toward one another. NOTE THIS IS FOR 2WD 4.0

2002 Chevrolet Cavalier 2.2L SFI OHV 4cyl

2.2L VIN 4



Fig. Remove the thermostat outlet bolts and outlet



Fig. Remove the thermostat


2.2L VIN F


Fig. Remove the thermostat


Hope helps (remember rated this)

1998 Chevrolet Cavalier 2.2L SFI OHV 4cyl



Fig. 1: The timing marks on the sprockets should be in alignment. If not, turn the crankshaft until the marks are aligned



Fig. 2: The timing chain tensioner is retained by a Torx head bolt (1) and a regular hex head bolt (2)



Exploded view of the timing chain and sprockets-2.2L OHV engine
( Where A = Timing Marks ).

I hope help you with this, good luck (remember rated this help).