QuestionI have a 2000 Hyundai Sonata 2.4L dOHC engine which I am curently working on and I need to set the timing allignment. The timing belt is the orgiinal and it slipped its timing after I installed a cranking sensor and now it needs to be re-set. If you could email me the proper way to set the timing along with a diagram showing how it is done, I would appreciate it very much?
Thanks Jim
Answer SERVICE MANUAL
Applies to: Sonata 1999-2001
GROUP
Engine Mechanical System Timing System
REMOVAL
Remove the crankshaft pulley, engine coolant pump pulley and drive belt.
Remove the timing belt cover.
Turn the crankshaft clockwise and align the timing marks so as to bring the No. 1 cylinder to compression top-dead-center position. At this time the timing marks of the camshaft sprocket and the upper surface of the rocker cover should coincide, and the dowel pin of the camshaft sprocket should be at the upper side. Remove the auto tensioner.
CAUTION
Rotate the crankshaft clockwise.
Remove the timing belt.
NOTE
If the timing belt is reused, make an arrow mark indicating the turning direction (or the front of the engine) to make sure that the belt is reinstalled in the same direction as before.
Remove the camshaft sprockets.
NOTE
Be careful not to damage the cylinder head with the wrench.
When the oil pump sprocket nut is removed, first remove the plug at left side of the cylinder block and insert a screwdriver to check the left counter balance shaft in position. Screwdriver used for this purpose should have a shaft 8 mm (0.3 in.) in diameter which can be inserted more than 60 mm (2.36 in.)
Remove the oil pump sprocket retaining nut and remove the oil pump sprocket.
Loosen the right counter balance shaft sprocket mounting bolt until it can be loosened by hand.
Next, remove tensioner "B" and remove timing belt "B".
CAUTION
After timing belt "B" has been removed, do not attempt loosening bolt, while holding sprocket with pliers, etc.
Remove the crankshaft sprocket "B" from crankshaft.
SERVICE MANUAL
Applies to: Sonata 1999-2000
GROUP
Engine Mechanical System Timing System
INSTALLATION
Install crankshaft sprocket "B" into crankshaft.
CAUTION
Pay special attention to the direction of the flange. If it is installed in the wrong direction, a broken belt could result.
Lightly apply engine oil to the outer surface of spacer, and then install spacer to the right counter balance shaft. Be sure to install in the direction as shown in illustration.
Install counter balance shaft sprocket onto right counter balance shaft, and then tighten flange bolt finger tight.
Align timing mark on each sprocket with corresponding timing mark on the front case.
When timing belt "B" is installed, make certain that tension side has no slack. Install tensioner "B" with center of pulley located on the left side of mounting bolt and with pulley flange directed toward front of engine. Align timing mark on the right counter balance shaft sprocket with the timing mark on the front case.
Lift tensioner "B" to tighten timing belt "B" so that its tension side will be pulled tight. In this condition, tighten bolt to secure tensioner "B". When bolt is tightened, use care to prevent shaft from turning together. If shaft is turned together, belt will be over tightened.
Check to ensure that timing marks are in alignment.
Check to ensure that when center of span on the tension side is depressed with index finger in direction of arrow, deflection of belt is within specification.
SPECIFICATION
Belt deflection 5-7 mm (0.2-0.3 in.)
Install flange and crankshaft sprocket onto crankshaft. Be sure to install in the direction as shown in illustration.
CAUTION
Pay attention to direction of flange. If it is installed in wrong direction, a broken belt could result.
Install special washer and sprocket bolt to crankshaft, and then tighten the sprocket bolt.
TORQUE SPECIFICATION
Crankshaft sprocket bolt 110-130 Nm 1100-1300 kg·cm 80-94 lb·ft
Insert screwdriver through plug hole in left side of cylinder block to keep shaft in position.
Install the oil pump sprocket, and tighten the nut to the specified torque.
Install the camshaft sprocket and tighten the bolt to the specified torque.
TORQUE SPECIFICATION
Camshaft sprocket bolt 80-100 Nm 800-1000 kg·cm 56-72 lb·ft
Install the auto tensioner.
CAUTION
Leave the set pin installed in the auto tensioner
NOTE
If the auto tensioner rod is in its fully extended position, reset it as follows.
Clamp it in the vise with soft jaws in a level position. Apply a plain washer if there is a plug at the bottom of the auto tensioner.
Push in the rod slowly with the vise until the set hole A in the rod is aligned with the set hole B in the cylinder.
Install the tensioner pulley onto the tensioner arm.
CAUTION
Leave the wire installed in the auto tensioner.
After installing the crankshaft sensor, set the timing mark of sprocket correctly.
NOTE
Before installing timing belt, if the timing marks of cam sprocket and rocker cover are not coincide, do not rotate the cam sprocket more than 2 teeth of sprocket in any direction. Rotating sprocket more than 2 teeth makes valve and piston be touched each other.
In case of rotating the cam sprocket in avoidably more than 2 teeth, rotate the cam sprocket after rotating crank sprocket counter clock wise on basis of timing mark.
Align the crankshaft sprocket timing marks.
Align the oil pump sprocket timing marks.
Install the timing belt around the tensioner pulley and crankshaft sprocket. Then secure the timing belt onto the tensioner pulley with your left hand.
Pulling the belt with your right hand, install it around the oil pump sprocket.
Install the belt around the idler pulley.
Install it around the intake camshaft sprocket.
Turn the exhaust camshaft sprocket one tooth clockwise to align its timing mark with the cylinder head top surface [see illustration in step 15]. Then, pulling the belt with both hands, install it around the exhaust camshaft sprocket.
Gently raise the tensioner pulley as shown by the arrow, so that the belt does not sag, and temporarily tighten the center bolt.
Check again whether the timing marks of each sprocket is correct or not.
Remove the fixed wire that is attached on auto tensioner.
Rotate the crankshaft two complete turns clockwise and leave it as is for about 15 minutes. Then, measure the auto tensioner protrusion "A" (distance between the tensioner arm and auto tensioner body) to ensure that it is up to specification.
MEASUREMENT SPECIFICATION
Auto tensioner protrusion 6-8 mm 0.15-0.18 in
Install the timing belt lower cover and the timing belt upper cover.
