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Re: Hyundai Sonata Timing belt replacment
1.Align the timing marks of the camshaft sprockets (on the front and rear sides) and the crankshaft sprocket (At the top dead center position of the No.1 cylinder compression stroke.)
2.Route the timing belt on the crankshaft sprocket, then onto the rear camshaft sprocket.
3.Run the timing belt onto the water pump pulley, the front
camshaft sprocket and the timing belt tensioner.
4.Apply force counterclockwise to the rear camshaft sprocket with tension on the tight side of the belt, check that the timing marks are all aligned.
5.Install the flange.
6.Back off the fixing bolts of the temporarily tightened tensioner one or two turns and tighten the timing belt with the tensioner spring force specified.
7.Using the special tool (09231-33100), turn the crankshaft two turns in the normal rotating direction (clockwise).
Turn smoothly, only in a clockwise direction.
8. Readjust the sprocket timing marks and re-tighten the tensioner locking bolts.
9. Measure the belt tension with a belt tension gauge as shown in
Tension force . . . . . . . . . . . . . 260-380 N (57-84 Ibs.)
Position the hooks in the tooth bottoms and apply the spindle to the back of the belt.
10. As the mounting bolts of the timing cover are different in size according to location, be sure to locate them .
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Yoy will get a diagram and how to do it from a workshop manual (Gregorys or haynes) as it is involved to explain here. Strongly suggest you have a hyundai qualified mechanic do it as it will save you money in the long run. IT is not just belts that need replacing but idler pullets and hydraulic adjuster (if you have one) as well as crank seal and cam shaft seal. Oil is the biggest killer of timing belts and all except the pulleys have oil in their presence.
Click on the following direct, Free Link. It has several Diagrams including the Timing Belt + Marks for your 2004 Hyundai Sonata 2.4L DOHC In-Line 4-Cylinder Engine (located on the bottom half of the Page on the Link). There are additional Diagrams that will prove to be helpful while you are doing this...
Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!
Installation Ensure timing marks aligned  &  . 1. Fit timing belt in anti-clockwise direction, starting at crankshaft sprocket. Ensure belt is taut between sprockets. 2. Slacken tensioner pulley bolt  . Push tensioner pulley firmly against timing belt to tension belt. 3. Tighten tensioner pulley bolt  . Tightening torque: 43-55 Nm. 4. Except Matrix: Turn crankshaft one turn clockwise. 5. Matrix: Turn crankshaft two turns clockwise. 6. Ensure timing marks aligned  . 7. Apply a load of 2 kg to belt at . Belt should deflect 4-6 mm. If not: Adjust position of tensioner pulley. 8. Install components in reverse order of removal. 9. Tighten crankshaft pulley bolt  . Tightening torque: 170-180 Nm
7 is timing mark on cam,pin mark to top,hole in spoke below pin mark lines up with mark on head
6 is crank timing mark,pin mark on crank lines up with mark on block
NOTE this mark is just before top
timing belt marks are as follows= crank at TDC marks are at 10 oclock the both cams marks at TDC are at 12 .oclock position marks are clear if you look theoil pump gear also driven by belt marks are approx 11 oclock position also marked thebalance shaft gear/cog must also be set to 9 oclock position when the b/shaft belt is fitted to hold theoil pump sprocket in its correct position remove the small screw/blank plug on side of block then use an 8 mm posi screwdriver insert into hole it should travel approx 60 mm to engage if not rotate pump gear 360 degree till it does locate fit main belt from crank anti clockwise to cams then tension same with b/shaft tensioner make sure you torque all bolts correctly any more info req'd come back hope this helps ?
hi from uk the marks i assume are the timing belt marks ?? to st up turn engine to T D C number 1 cyl fire check the cam cog and view the hole in the cg is at top and the vertical line mark on cam bearing cap are lined up along with the crank mark which should line up with the point on engine this mark is approx at 11 o clock position when viewed if not rotate engineanother rev till both marks line up release tensioner (renew it !) fit new belt from crank anticlockwise to cam then round tensioner push tensioner against belt firmly and torque 43-55 Nm turn engine by hand till marks re aligne ok ?check tension ? ok ? torque crank pully bolt 170-180 Nm reassemble engine hope this helps ?