Timing chain installation

Getting the engine to top dead center (TDC) on the compression stroke is an important step when replacing the timing chain on a 2008 Hyundai Sonata 2.4L. Here are the general steps to follow:
1. Locate the timing marks: Look for the timing marks on the crankshaft pulley and the camshaft sprocket. The crankshaft pulley should have a mark on it, and the camshaft sprocket should have two marks that need to be aligned.
2. Rotate the engine: Rotate the engine by hand using a socket wrench on the crankshaft bolt. Turn the engine clockwise until the timing marks on the camshaft sprocket are aligned.
3. Check the piston position: Remove the spark plug from the number one cylinder and use a long screwdriver to feel for the position of the piston. When the piston is at the top of its stroke, you will feel resistance.
4. Adjust the position: If the piston is not at TDC on the compression stroke, rotate the engine again until it is. You may need to rotate the engine several times to get it in the correct position.
5. Double-check the timing marks: Once the piston is at TDC on the compression stroke, double-check the timing marks on the crankshaft pulley and the camshaft sprocket to ensure they are still aligned.
Once you have confirmed that the engine is at TDC on the compression stroke, you can proceed with installing the new timing chain. It's important to follow the manufacturer's instructions carefully and to torque all bolts to the correct specifications. If you are unsure about any step of the process, it may be best to consult with a mechanic or seek further guidance from an expert source.

Stop!!!! Unless you fully understand what to do you should take the car to a qualified technician. You can destroy the motor if it is not assembled correctly. You would need to get the number one cylinder at top dead center (Insert a screwdriver into the cylinder and hand turn the crankshaft until the piston is at the very top. Line up the two marks on the crank pulleys then assemble the belt. Check online or get a repair manual to confirm the proper procedure.

piston must be top dead center
need to be specific , make ,model, year vehicle name( caddy does not compute in the books for either chain or belt) belt or chain
post again with all the details
posts are not linked

Timing belt. This engine is an interference engine. Ensure the belt is replaced before it breaks to prevent internal engine damage. If replacing it as a DIY project, be sure to follow all procedures carefully as improper procedure can also result in valve or piston damage. If the belt has already broken, the odds are better than 90% that the cylinder head will need to be repaired or replaced and the pistons will need to be inspected for damage.

Basically, #1 piston should be all the way up, with the intake valve past opening and now closed and the exhaust valve just about to start opening. Buy a cheap shop manual to insure you get this correct or you will be very sorry.

SET?
is this a ground zero, never looked question
our 1.8 has a belt and chain.
called the AEB engine. 20 valves.... or is it the 16valve>?

1.8 R4 20vT

ours is the DOHC head,
there are 47 steps. in the FSM.
and photos , (log in to alldata.com and look?)

the engine as s chain at the rear of the 2 cams, linking them.
and a front drive belt all must be timed by the book.
the first, fact to discover, is if it is and INTERFERENCE engine.
Im told it IS>!
if yes, do not crank engine over, util you are 3 times sure of timing
or boom, kiss off valves, or more..... damage has no limits.
the book tells you to match mark, the rear chain sprockets.
ill skip this, you implied front of engine belt.
there are 2 chapters one for rear chain
and one for belt.
here is the belt side.

quote. removal.

1. Note the radio security code and disconnect the negative battery cable.
2. Place the (hood) lock carrier in the service position. For additional information, please refer to the following topic(s): Body And Trim, Service Position, Front Bumper, Hood Lock Carrier.
3. Remove the engine accessory drive belts. For additional information, please refer to the following topic(s): General Information And Maintenance, Routing Maintenance And Tune-up.
4. Using a 5 x 60mm bolt, secure the viscous fan pulley. Using a hex wrench, remove the viscous fan-to-pulley bolts. Remove the viscous fan assembly.
5. Turn the engine by hand to Top Dead Center (TDC) on the firing stroke for cylinder No. 1.
6. Remove the upper timing belt cover.

usually a dumb idea this.... but is stated.
If reusing the timing belt, mark its rotational direction so it may be installed in its original position.

1. Using the center bolt, rotate the crankshaft in the direction of engine rotation to position the No. 1 cylinder at Top Dead Center (TDC) of its compression stroke.
2. Remove the damper pulley-to-crankshaft bolts and the damper.
3. Remove the lower timing belt cover.
4. Using a Torx Wrench T45, or equivalent, loosen the timing belt tensioner, push the tensioner downward and remove the timing belt.

SEE 5 MISSING PHOTOS THEN,.
iNSTALL

1. Align the camshaft sprocket timing mark with the cylinder head cover mark.
2. Install the timing belt on the crankshaft sprocket with the arrow facing the rotational direction.
3. Install the lower timing belt cover.
4. Using a bolt, secure the damper/belt pulley on the crankshaft.
5. Align the crankshaft damper/belt pulley with the housing timing mark so that the No. 1 cylinder is at TDC of its compression stroke.
6. Install the timing belt on the camshaft sprocket and belt tensioner.
7. Using a 2-pin Spanner Matra Tool No. V159 Wrench, or equivalent, lift (turn clockwise) the timing belt tensioner cylinder No. 1 until it is fully extended and tensioner cylinder No. 2 is raised approx. 1mm (3/8 inch); then, hand-tighten the mounting bolt.
8. Rotate the crankshaft 2 complete rotation in the running direction.
9. Inspect area 'A' for proper alignment with the upper edge of piston No. 2 and adjust if necessary.
10. Area 'A' - adjustment OK
11. Area 'B' - wear limit
12. Area 'C' - re-adjust and check belt drive including tensioner for wear.

details, (devil?)
If the piston edge is located in area 'A', measurement 'D' is 25-29mm (31/32-1 1/8 inches).

1. After adjustment has been verified, secure the tensioner with a 2-pin Spanner Matra Tool No. V159 Wrench, or equivalent, and tighten the mounting bolt.
2. Complete the damper to crankshaft installation.
3. Using the center bolt, rotate the crankshaft 2 rotations in the direction of engine rotation until the camshaft and crankshaft marks align with their respective reference points.
4. Install the upper timing belt cover.
5. Install the drive belts.
6. The balance of assembly is in reverse order of removal.
7. Install the negative battery cable last.
8. Test drive the vehicle.

login to alldata.com and just look, its $15 bucks.
the cost is about 1/10 of 1hour shop labor charges, stateside,
free IMO..
PS : a savvy mech will not do step 8 ,until he:
1: spins engine over by hands sparks out, to feel if the valves hit the pistons, ( a DUH factor if ever. there was)
and TRIPLE checking. all timing marks again before close up.

there is no forgiveness, like on free runners. not at all.

u need to bring piston number 1 to top dead center and then line up your timing marks and put chain on

TDC is an acronym for Top Dead Center. It is when the piston has reached the very top of its travel and there is nowhere for the piston to go but down. If you align the timing marks on the engine, the piston will be at TDC with the valves on #1 closed.

To position your crankshaft and cam to the correct position, it should be done BEFORE removing the belt if possible. If the belt has already been removed and/or the belt was broken, the same principles apply, but you will have to go about it completely different.

Turn the engine clockwise to align the "O" on the crankshaft pulley with the "O" on the outer timing belt cover.
Remove the plug in the outer timing belt cover and look through the hole. The timing marks on the camshaft pulley should align with the cover pointer. If they do not align, rotate the crankshaft one full revolution and align the "Os" again. They should now align. When every thing is lined up like this, your engine is timed to #1 at TDC and the valves on #1 cylinder will be closed.

Now if the belt has already been removed or if the belt was broken, You may have to temporarily put the outer cover back on. You may have to put it on and take it off several times until you get things lined up. Time the crankshaft "Os" first. It will not matter which rotation you are on if the belt is not installed. (TDC is TDC - the piston doesn't really care where the valves are - that's the camshaft's problem LOL)
After the crank shaft is lined up, turn the camshaft so the timing marks line up with the pointer. Then remove the front cover and install your belt.

After setting the timing belt tensioner, rotate the engine two full turns clockwise and recheck to make sure that all the timing marks still line up. If they do not - repeat the procedure.

Engines backfire when timing has slipped. You might need a new timing belt. \

Timing belt goes from Crankshaft on bottom of engine to Camshaft on top of engine. Both have to be synchronized to the correct timing.

Check repair manual or internet for correct timing. You'll probably have to find top dead center on first piston.

This is a job for an experienced technician. Probably about a $300 job. Maybe more.

Here is procedure for 1996:

Removal

1. Drain the cooling system. Refer to Section 03-03 for the procedure.
   

1. Disconnect the battery ground cable (14301).
   

1. Remove the generator drive belt, water pump and power steering pump drive belt, and the A/C compressor drive belt (if equipped). Refer to Section 03-05 for the removal procedure.
   

1. If equipped, remove the three A/C compressor drive belt idler pulley bolts and the A/C compressor drive belt idler pulley.
   

1. Remove the upper radiator hose bracket bolt.
   

1. Loosen the two upper radiator hose clamps and remove the radiator hose bracket bolt. Remove the upper radiator hose (8260) and the upper radiator hose bracket from the vehicle.
   

1. Remove the water bypass hose (8597) from between the thermostat housing and the water hose connection (8592).
   

1. Remove the main wiring harness from the upper engine front cover (6019).
   

1. Remove the eight upper engine front cover bolts and the upper engine front cover.
   

1. Raise and support the vehicle.
   

1. Remove the RH front wheel and tire assembly.
   

1. Remove the four RH outer engine and transmission splash shield bolts and two screws and remove the RH outer engine and transmission splash shield (6775).
   

1. Use Strap Wrench D85L-6000-A or equivalent to hold the water pump pulley (8509) while removing the four water pump pulley bolts.
   

1. Remove the water pump pulley from the water pump (8501).
   

1. Remove the crankshaft pulley (6312). Refer to the procedure in this section.
   

1. Remove the five lower engine front cover bolts and the lower engine front cover.
   
2. Ensure that the timing marks between the crankshaft sprocket (6306) and the oil pump housing line up.
   

18. NOTE: The directional arrow is necessary to ensure that the timing chain/belt (6268) can be reinstalled in the same direction.

If the timing chain/belt is to be reused, mark the direction of rotation on the timing chain/belt.

19. Loosen the timing chain/belt tensioner nut.

1. Remove the timing chain/belt.
   

Installation
NOTE: Ensure that the timing marks on the camshaft sprockets (6256) and the seal plate are properly aligned. Ensure that the timing marks on the crankshaft sprocket and the oil pump housing are still aligned.



CAUTION: Pay special attention to the tooth shape of the timing belt. The current timing belts are not interchangeable with the timing belts from the 1993 model year. The 1993 model year uses a square or trapezoidal tooth timing belt while the current model year uses a rounded tooth design. The design change was made to extend the service life of the timing belt from 60,000 miles for the square or trapezoidal toothed belt to 105,000 miles for the rounded tooth belt. If the proper timing belt is not used, the customer may complain of a "whining" noise coming from the engine compartment. If the camshaft sprocket has a square cut in the valley of the gear tooth, it will require a square or trapezoidal tooth timing belt. If the camshaft sprocket has a rounded cut in the valley of the gear tooth, it will require a rounded tooth timing belt.
NOTE: If a new timing chain/belt is to be installed, make sure that the arrow is pointing away from the engine. If a timing chain/belt is to be reused, make sure that the directional arrow that was marked during disassembly is facing the correct direction.

NOTE: A new timing chain/belt has three white timing marks that indicate the correct timing positions of the camshafts and the crankshaft. These marks will help ensure that the engine (6007) is timed properly. When the engine is properly timed each white timing mark on the timing chain/belt will be aligned with the corresponding camshaft and crankshaft timing mark on the sprocket. Because the white timing marks are not evenly spaced you will need to refer to the following illustration for proper timing chain/belt placement. There should be 40 timing belt teeth between the timing marks of the front and rear camshaft sprockets and 43 teeth between the timing mark on the front camshaft sprocket and the timing mark on the crankshaft sprocket.

NOTE: Verify that the camshaft timing marks are aligned with the timing marks on the seal plate, and that the crankshaft sprocket timing mark is aligned with the timing mark on the oil pump (6600).

Install the timing chain/belt starting at the crankshaft sprocket and moving around to the camshaft sprockets following a counterclockwise path. Do not allow any slack in the timing chain/belt between the timing sprockets. After all of the timing marks are matched up with the timing chain/belt installed, slip the timing chain/belt onto the timing chain/belt tensioner.

1. While holding the timing chain/belt tensioner with an Allen wrench, loosen the timing chain/belt tensioner nut.
   

1. Allow the timing chain/belt tensioner to put pressure on the timing chain/belt.
   

1. Use an Allen wrench to turn the timing chain/belt tensioner 70-80 degrees clockwise and tighten the timing chain/belt tensioner nut to 43-58 Nm (32-43 lb-ft).
   
2. 
   
   1. Rotate the crankshaft (6303) clockwise twice and align the No. 1 piston to Top Dead Center (TDC) on its compression stroke.
      
1. Apply 98N (22 lbs) of force on the timing chain/belt between the rear camshaft sprocket and the timing chain/belt tensioner.
   
2. NOTE: An assistant may be needed to adjust the timing chain/belt.
   
   While holding the timing chain/belt tensioner steady with an Allen wrench, loosen the timing chain/belt tensioner nut. Remove the Allen wrench and adjust the timing chain/belt tensioner as follows:
   
1. Install a 0.35mm (0.0138 inch) thick and 12.7mm (0.500 inch) wide feeler gauge as shown.
   

1. Turn the crankshaft clockwise to position the feeler gauge between the timing chain/belt tensioner and the timing chain/belt

1. Tighten the timing chain/belt tensioner nut to 43-58 Nm (32-43 lb-ft).

1. Turn the crankshaft clockwise to remove the feeler gauge from between the timing chain/belt tensioner and the timing chain/belt.

1. Rotate the crankshaft clockwise twice and align the No. 1 piston to TDC on its compression stroke.
   

1. Apply 98N (22 lbs) of force on the timing chain/belt between the rear and front camshaft sprocket.
   
1. Measure the timing chain/belt deflection. Timing chain/belt deflection should be between 13-15mm (0.51-0.59 inch). If timing chain/belt deflection is not within specification, repeat steps 3-11. If the timing chain/belt cannot be adjusted to within specification, the timing chain/belt will have to be replaced.
   
1. Position the lower engine front cover and install the five lower engine front cover bolts. Tighten the five lower engine front cover bolts to 3-5 Nm (27-44 lb-in).
   
1. Install the outer timing chain/belt guide and the crankshaft pulley. Refer to the procedure in this section.
   
1. Position the water pump pulley on the water pump and install the four water pump pulley bolts
   
1. Use Strap Wrench D85L-6000-A or equivalent to hold the water pump pulley, and tighten the four water pump pulley bolts to 16-21 Nm (12-15 lb-ft).
   
1. Position the RH outer engine and transmission splash shield and install the four RH outer engine and transmission splash shield bolts and two screws.
   
1. Install the RH front wheel and tire assembly. Tighten the lug nuts (1012) to 98-118 Nm (72-87 lb-ft).