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Just the engine. The marks on the belt are to make sure the teeth are in the right place when replacing. It might come back in place on 4 turns of the crankshaft. I have never checked to see if the belt marks came back. But always check the timing marks themselves.
Well, hopefully the valves were not damaged when the belt broke, If no valve damage was done, get the engine/crankshaft to top dead center, line up camshaft sprocket to timing mark and install belt around pulleys, gears, replace water pump if needed, tension belt if no automatic tensioner is used, try to start to see if it runs and hopefully it will. Might be time for an engine if valve damage was done.
If your old belt is still on the easiest way and can't go wrong is to mark the timing belt and pulleys in same position so they line up using nail varnish as it dries quicker than paint, wait for it to dry and then take bel off transfer the marks onto new belt by putting belts together making sure the are in line then just put belt onto car lining up with the marks on the pulleys tension belt and job done
If the belt keeps jumping, I would say you have a badly worn sprocket or the belt tensioner needs checking, it may need a new tensioner or your procedure for tightening it needs to be checked. If no mark for the idler, then just put it at the 4 o'clock position, as you are facing it.
Place the Voyager's engine in the TDC no. 1 position for cylinder firing in order to get proper alignment. Disconnect the negative cable on the battery.
2Take off the accessory drive belts, and take out engine mount insulator, located in the engine support bracket. Detach the engine support bracket and take off the torsional damper and crankshaft pulleys. This ensures easier access to the timing belt.
3. Locate the 2- to 3-inch wide timing belt in the front of the engine. Remove the cover of the timing belt.
4Mark the course of rotation on the belt as a reference if you plan to reinstall it. Slacken the timing belt torsioner bolt and take off the timing belt. Detach the timing belt torsioner if needed.
5Remove the crankshaft sprocket and the flange shield of the crankshaft sprocket. Secure the camshaft sprocket using a spanner tool MB990775, or something similar, and take off the bolt and washer to the camshaft sprocket.
Install the Timing Belt
6Use the retaining washer and bolt to fit the camshaft sprocket onto the camshaft. Utilize the spanner tool MB990775 and tighten the bolt. Mount the crankshaft sprocket and put on the timing belt torsioner and tensioner spring if it was removed. Hook the higher end of the spring to the water pump pin and bottom end to the tensioner bracket with the hook facing out.
7Rotate the timing belt tensioner in a counterclockwise turn and tighten the bolt to momentarily hold it in place. Turn the crankshaft sprocket until the timing mark lines up with the timing mark on the oil pump timing mark. Revolve the back camshaft sprocket so that its timing mark lines up with the generator bracket timing mark. Turn the radiator side camshaft sprocket so that the mark aligns with the inner timing belt cover mark.
8Connect the timing belt onto the Voyager's crankshaft sprocket, keeping the belt tight on the side of tension. Install the belt in the same rotational direction if using the original timing belt. Put the timing belt on the radiator side of the camshaft sprocket, and place the belt underneath the water pump pulley first, and follow that by putting it over the back camshaft sprocket and the tensioner.
9Create tension on the side of the timing belt and correctly line up all timing marks. Put the crankshaft sprocket flange into place and loosen the tensioner bolt to allow the tensioner spring to put tension on the belt. Turn the crankshaft two clockwise turns. Line up the timing marks and tighten the tensioner bolt. Put on the timing belt cover and engine support bracket.
10Put the engine mount insulator, crankshaft pulleys and torsional damper into place. Mount the accessory drive belts, connect the negative battery cable and check that the engine runs properly.
The crank has got to be at TDC, with the marks lined up, the cams have to be lined up to their marks, then the belt will line up, If it doesn't line up, You will be walking home. If you have the old belt handy and the marks are still visible, compare them to the new belt, make sure they are the same. Pull the pin on the belt tensioner and you should be all set. Hope this helps.
maybe u can try use an sharp object like srew driver scrath around the cam body..coz it maybe hidden with some dirt..but if like my eg8,i will put a mark b4 put off evrything especially the timing belt..