Sonata 2.4L Timing Belt Complete Step by Step
The timing belt that i used was $50 dayco from
Pepboys. The removed Hyundai timing belt was made by bando. The new balance belt
was $22 goodyear from kragen/oriley (Pepboys was out it would have been a $20
dayco). The removed Hyundai balance belt was made by Gates(powergrip). The
dealership in Pasadena wanted $515 for the job and that include all belts (both
timing and 2 accessory belts).
1.(optional) Spray out the passenger side
front wheel well so that all the brake dust is removed. Make sure everything is
dry before continuing.
2.Put the car on a jack stand(1) and take off the
right front (passenger side front) wheel (don't forget wheel chocks and the
3.Remove 2 sets of splash covers on the passenger
4.Loosen Crankshaft pulley bolt - 22mm impact socket + breaker bar +
long pipe braced against the ground. Click Engine for 0.5 seconds and the bolt
should break free (or use and impact wrench).
5.Support the engine by the oil
pan using 2 wood blocks and a floor jack.
6.Remove engine mount on the
passenger side. Pop power steering reservoir up and use a 17mm impact socket and
breaker bar to loosen the right (radiator) bolt holding the engine mount (after
breaking free the bolt you can use a regular socket wrench to turn the bolt
out). Remove that bolt. Use the 17mm socket + breaker bar + pipe to remove the 3
bolts attaching the engine mount to the engine.
7.Remove the bolt securing
the power steering line (so you get a little more room).
8.Raise the engine
till the water pump pulley bolts are accessible by a socket wrench and then
loosen those 4 x 10mm bolts (at this time the belts should still be on which
will help hold the pulley from turning).
9.Remove the power steering belt
(turn the screw holding the belt tensioner closest to the radiator counter
clockwise) and alternator belt (loosen the side bolt holding the slide on the
10.Remove the Upper timing cover.
11.On the crankshaft pulley
remove the 4 x 12mm bolts and take off the crankshaft pulley. (an impact wrench
really helps for these 4 bolts but you have to use a regular deep socket because
the impact sockets are too thick)
12.Remove the lower timing cover (jack the
engine up and down to make accessing the bolts easier).
13.Rotate the crank
shaft clockwise to set the timing marks. Intake cam, exhaust cam, left balance
shaft, right balance shaft/oil pump, and crankshaft sensing blade. 5 sets of
timing marks in total.
14.Use a permanent marker and mark a few timing spots
onto the timing belt. This is for reference just in case you need to put this
belt back on the exact same spot. I used the 2 cam shaft timing marks and an
arbitrary place on the crankshaft. This technique is also helpful when
installing the new timing belt by transferring the marks on the old belt to the
15.Unbolt the auto tensioner (2) screws. Be careful when this thing
releases the tension on the timing belt just about every cam/sprocket will
16.Check the auto tensioner it should have a 14.5mm extension (top of
the housing to the top of the plunger). If not it probably needs to be
17.To reuse a the auto tensioner get a 100mm (minimum) clamp and
slowly compress the plunger. When it is fully compressed put a pin into the
18.Remove the crankshaft sprocket.
19.Pop off the crankshaft
position sensor (2 screws) and move it out of the way.
20.Pop off the
crankshaft sensing blade to get to the balance belt.
21.Loosen the balance
belt tensioner and remove the balance belt.
22.Install the new balance
23.Put back on the balance belt tensioner. The side with the lip and
the protruding center should face out. On my car the bolt looked like it was at
about 4 o'clock when the tensioner was put back on.
24.Put back on the
crankshaft sensing blade and the crankshaft position sensor.
25.Put back on
the crankshaft sprocket.
26.Install the new timing belt. Do your best to line
up the timing marks. For this step it helps to move the intake cam forward a
few(1-2) teeth and have someone hold the exhaust cam with a wrench. That way
then the auto tensioner is put in the slack rolls the intake cam into it's
27.Install the auto tensioner with the pin still
28.Once all the timing marks are verified you can pull the pin in the
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