They are just little dots on the outer edge of the gears that you line up when assembling it. The crank gear timing mark on small and big block Chevy's is a couple teeth away from the key-way slot, that's the mark you line up with the dot on the cam gear.
If the chain jumped then you'll have to turn the cam until the mark on the cam gear is pointing straight down and turn the crank so the mark on the crank gear is pointing straight up at the mark on the cam gear before you put the chain on and tighten the bolts. The crank key-way will be at about 2 O'clock when the timing mark is pointing straight up. If you can't turn the cam to line up the marks then thread a couple 2 inch long 5/16 X 18 coarse thread bolts into two of the three cam gear bolt holes and use a screw driver between them to lever it around until the mark on the upper cam gear is pointing straight down at the center of the crankshaft -- do not force it, you'll feel the pressure of the valve springs as you turn it but should not feel anything else, it shouldn't lock up and if it does don't force it. With a stock camshaft you shouldn't have a problem but if an aftermarket cam with more lift was ever installed then the valves should be backed off before turning it over like this as the valves could hit pistons depending on the position of the crank, although if the timing chain jumped on an engine with a big cam then the damage has probably already been done anyway. I'm not going to go into this aspect any further as it doesn't really apply to a bone stock 350 Chevy, a word to the wise is sufficient and anyone who takes a wrench in their hand is ultimately responsible for what they do with it.
Keep that in mind if you use an aftermarket double roller timing chain with three key-way slots in the crank gear that you do NOT line up the mark in line with the key-way with the mark on the cam gear or you'll be a couple teeth off. If you're using stock replacement parts then most likely it will only have one mark on the crank gear that's about 2 teeth away from the key slot and is the one you line up with the cam gear. Just looking at the gear you should be able to see what I'm talking about -- it's actually between two and three teeth away from the key-way slot.
If the old cam gear was aluminum with nylon coating on the teeth the mark on the upper cam gear will be a little arrow pointing inward, if you're replacing it forget the nylon gear and don't let anyone sell you one, get a steel or iron replacement upper gear or buy a timing chain set that comes with steel gears.
For more info consult a shop manual, but above ^^ is the basics to watch out for when you start buying replacement parts.
The cambelt connects the camshaft to the crankshaft, the belt drives the camshaft and keeps it in the correct timing (when the valves open/close in relation to the crankshaft angle.)
timing marks are , marks on camshaft sprocket, an on crankshaft sprocket'.
They are on the camshaft and crankshaft sprockets
the mark on the camshaft timing gear needs to line up with the mark on the crankshaft timing gear to ensure the camshaft is in proper time with the crankshaft. Keep in mind that the marks will only line-up every other revolution of the engine due to the crankshaft spinning twice as fast as the camshaft.
Remove the drive belts, crankshaft pulley, and timing covers. Align the timing marks on the camshaft and crankshaft and r+r the belt
My timing belt slipped on my 1990 tyota 4runner 3.0. The crankshaft mark and camshaft marks do not align. Should i keep the crankshaft aligned and then align the camshaft marks?.
The crankshaft and camshaft stay synchronized by way of the timing chain.
You have to set your camshaft at a position of firing at number piston ,that is if the camshaft gear does not have a visible timing marks and in relationship with the crankshaft position it has to be position number one piston at TDC
line the timing mark from the crankshaft sprocket up with the camshaft sprocket and tada!
In a four-stroke overhead-cam engine, the timing chain connects the crankshaft to the camshaft. The camshaft opens and closes the valves in the cylinders and turns at half the speed of the crankshaft. Many engines now have a cog-belt instead of a chain.
The camshaft sensor is the same as the crankshaft sensor it is local on the passenger side of the valve cover . And going down to your crankshaft inside the timing belt cover
The crankshaft position sensor must be behind the timing belt cover next to the crankshaft and behind the crankshaft pulley. The camshaft position sensor is again under the timing belt cover next to the camshaft and behind and the camshaft pulley. Is it the same place in 2000 Camry 4Cyl? Do you have pictures of the location? Hard or easy to replace, and what tools do I need? Thanks alot
the timing marks are on the crankshaft pulley and camshaft pulley.make sure they line up with the marks behind them on the relevant part of engine you are looking at.
Camshaft . To . Crankshaft is . To slit
timing is set by the timing marks on the crankshaft,camshaft and timing belt. Send me your e-mail and I'll send you the daigram.
In order to do this properly, you need the correct tools as well as an owner's manual and a repair manual for diagrams that show the relevant parts and their names, ignition marks and so on. The manual is also necessary in order to understand some of the terms named here. You should prepare well for this job in order to avoid mistakes which could be serious. Procedure: The engine should be cold. Use the crankshaft pulley bolt to turn the crankshaft and align the timing marks on the crankshaft timing pulley and on the oil pump body. Remove any oil or water on the crankshaft timing pulley,idler pulley and water pump pulley, and keep them clean. Align the installation mark on the timing belt with the drilled mark of the crankshaft timing pulley. Install the timing belt on the crankshaft timing pulley, also on idler and water pump pulleys. Crankshaft Position: Turn the crankshaft pulley, and align its groove with the
The timing marks are dots on the ends of the camshaft and crankshaft. They are on the sprocket ends where the timing belt or chain connects. The dots should be pointing towards each other for proper setting. The cam dot should be pointing down and the crankshaft dot pointing up. The dots or marks can only be viewed when the timing chain cover is removed. hope this helps...
The timing belt of a vehicle is responsible for linking the activities of the crankshaft and camshaft. A damaged timing belt could be responsible for a faulty engine.
2.4l dohc balance shaft timing mark, crankshaft sprocket timing mark,oil pump timing mark and camshaft TWO timing marks 2.4l sohc balance shft timing mark, crankshaft timing mark, oil pump timing mark and ONE camshaft timing mark. it is complicated only that everymark must be bang on, if not the pistons will hit the valves and YOU get to rebuild engine.
Line up the timing marks on both camshaft sprockets so that they face each other. And line up the crankshaft pulley mark with the mark on the engine block.
there is no timing belt sensor, only camshaft position sensors and crankshaft position sensor.
Does the 1991 2.5 s10 have a timing chain or a belt or just mesh gears and how do you replace them The camshaft is gear driven off the crankshaft. The camshaft gear is pressed onto the camshaft. The camshaft must be removed from the engine to change the camshaft timing gear. The timing gears should last the life of the engine. Next time, please don't answer your question with another question.
It is a variable valve timing innovations from toyota, where in power and fuel efficiency can be optimized by varying the timing of the camshaft with respect to the crankshaft of an engine,by retarding or advancing the camshaft by a certain phase angles.A conventional engine has it's camshaft rotate half the crankshaft rotation and the performance of a such engine would be in it's peak efficiency for a single speed only.Engineers developed a technology to overcome this in-efficiencies by introducing variable valve timing where camshaft rotation can advance or retard with respect to the crankshaft,hence optimising performance and fuel efficiency.
for pre-95 Mustang 5.0 Camshaft Timing is changed by moving the camshaft in relation to the crankshaft. By advancing the camshaft the valves open and close earlier in relation to the position on the crankshaft. By retarding the camshaft the valves open and close later in relation to the position of the crankshaft. A degree wheel as well as other tools are needed for this procedure. Some aftermarket timing gears have extra keyways cut into the crankshaft gear to provide alternative adjustments for advancing or retarding the camshaft. Offset bushings or adjusting keyways are also sold to adjust the timing by a few degrees to account for manufacturing inaccuracies. The bottom line is if you do not know what you are doing, this is one of the areas that you can do a lot of damage to your engine. Tread carefully.
you dont. It is auto timed thru the camshaft sensor and crankshaft sensor, You have to have the timing belt timing marks right on to get correct timing.