Timing belt diagram maintenance replacement
Your timing belt is the most important maintenance item in your engine. Think of your timing belt as the conductor of the complex mechanical orchestra that is your car's engine.
Short instructions:
1. cylinder no.1 on top (picture 3)
2. Lock cylinder no.1 crankshaft position (picture 4,8,9 and 10)
3. Lock cylinder no.1 camshaft position (picture 1,2 and 5)
4. Ring crankshaft position (after having done step 2.) take a look at picture 6
Soon on this page we will post timing belt diagram and replacement instructions for Volkswagen Crafter 2.5.
Currently working on this project, please visit us soon.
Expensive damage can be caused to your engine: Many timing belt engines are “interference motors”, which simply means that the valves would hit the pistons if not kept in proper timing. This is not a problem under normal operating conditions but if the timing belt were to break or jump off the gears, the valves of one or more cylinders would strike the pistons and cause severe and costly damage.
If your car has more than the recommended mileage on the timing belt, you may be operating your car on borrowed time and the cost of replacing the belt is MUCH cheaper than having to rebuild or replace the engine because of damage caused by a snapped/worn timing belt.
Parts can be hard to find to repair damage caused by a failed timing belt: It’s obvious that timing belt replacement as a preventive maintenance measure is often ignored. This is so prevalent, in fact, that many car manufacturers and engine parts manufacturers don’t stock major engine components for timing-belt engines after the required 5-7 years because there will be only a handful of these cars still on the road. It can be quite difficult to find crankshafts, pistons, connecting rods, camshafts and the like for these older engines due to the economic infeasibility for the manufacturers to continue producing these parts for the few cars that they estimate will still be on the road.
In fact, many car manufacturers don’t expect timing-belt driven engines to last through more than two timing belts or approximately 120,000-150,000 miles and, moreover, they actually expect many to be taken out of service with the original belt still installed. Sadly, there are hundreds of thousands of 85,000-90,000 mile timing belt cars in junkyards because the timing belt was never replaced. What a waste when these cars could still be enjoying a useful life had the owner just paid attention to the recommended mileage replacement intervals for the timing belt.
Many of today’s autos have timing belts. If you keep up with all the necessary services today’s automobiles are engineered to last well over 100,000 miles. Your auto, being in good shape now has 50,000 plus miles on it and you plan on keeping it. You will now have to consider the big expensive service. The Timing Belt.
This timing belt is made of the same basic materials that the other drive (fan) belts are made of. The timing belt is probably one of the more expensive and more important maintenance items you will have to do. Follow your manufacturer’s time and mileage recommendations for this service. Many of today’s engines are called “interference engines”. This means if your timing belt skips or breaks the valve and pistons are no longer in sync and will hit each other causing very extensive damage internally to the point of having to replace the complete engine itself.
If you plan on replacing the timing belt yourself you best be very mechanically inclined. Replacing this belt on a four cylinder engine is not all that difficult if you know what you are doing. Replacing this belt on a six cylinder engine, especially a transverse engine, can be over bearing for the average backyard do-it-yourselfer. If the engine is not an interference type and belt timing is off by a few teeth the worse that will happen is the engine not running properly and the belt has to be re-timed. If the engine is an interference type and the belt is off by too many teeth the valves and piston will hit each other, so by trying to save money you have just ruined the entire engine. Think twice or three times before attempting this belt replacement by yourself. Some things are better left to pros even if it costs more. Don’t forget, at least this way you have a certain warrantee on the repair should something go wrong.
Choosing not to do the timing belt when the service is due can lead to the same engine damage should this belt skip a few teeth or break from age
Are you facing timing belt problems? Well, this is a rather serious matter because your engine is largely dependent on the smooth running of the timing belt. The timing belt connects the crankshaft, the walls, the camshaft and the Pistons all together. So if one is “out of caliber” there is a chance that you might find yourself having an engine seizing at odd moments. That is because the synchronization which is timed to run in a very well coordinated motion has been disturbed. That is why you need to know all about timing belt problems and how they need to be solved immediately so that your engine does not break down right in the middle of the road.
One of the most common of timing belt problems is not replacing it in time. Your timing belt is going to face the normal wear and tear of any hard worked car component and is going to give way during the passage of time. So it is necessary to get the professionals are expert or mechanic to check out your timing belt problems and replace them whenever necessary. He is going to replace any damaged, cracked or badly worn timing belt.
Timing belt replacement is the “must-do” service operation which every car owner should know about. Along with that knowledge, we should be aware of whether our engine is considered an interference engine or not. These two bits of information can, at a minimum, save us from unexpected breakdown and in the extreme can help us avoid thousands of dollars in repairs.
Without getting too technical, the synchronization between two internal engine parts (the crank and cam shafts) is accomplished with the help of the timing belt. In the process of these two parts moving the valves open and close in close proximity to the pistons. This constitutes an interference engine, because if the timing belt jumps a tooth on the sprocket on which it rides or the belt fails altogether the valves and pistons will “interfere” with each other.
This collision will cause major damage to the engine. The repair bill will, on older vehicles, often exceed the value of the car. On the other hand, a car whose engine is not configured this way will simply lose power or will not start. While this might be more desirable than facing huge repair costs, it is something that is better avoided if possible.
The motivation for preemptive replacement of the timing belt is obvious. But how do you know when to replace it? There is always the owner’s manual which will indicate mileage of anywhere from 50,000 to 90,000 miles. For a comprehensive list of timing belt service intervals and the type of engine (interference or not) check out About.com.
Some other considerations relative to timing belt replacement are:
1) Is the vehicle leaking any type of fluid that might degrade the belt, if so disregard the suggested replacement interval and replace the belt ASAP as well as repair the leak;
2) Do you know the repair history of the vehicle if it is not verifiable err on the side of safety and replace the belt;
3) Timing belt replacement can be labor intensive. Since the water pump is usually accessed in the same operation you might consider replacing the pump at the same time even if it doesn’t leak. You will save on labor and possibly prevent a pump replacement later on that will also necessitate the belt to be replaced again;
4) To avoid subsequent failure consider replacing sprockets and tensioners that are part of the timing belt system. All components are sometimes sold as a kit and can be less expensive than purchasing them individually.
All service intervals should be followed in order to protect your investment and maintain the integrity of your warranty. In the case of the timing belt, it just makes sense.
Timing Belt Symptoms
A timing belt handles the timing of the engine’s valves. If a timing belt snaps, certain kinds of engines could be damaged. It’s better to replace the timing belt if you have hit the amount of miles your vehicle manual recommends for a replacement, or if you notice some symptoms signaling which the timing belt is going bad.
There’s two different kinds of engines: interference and non-interference. In case your timing belt snaps or slips on an interference engine, the engine is going to be badly damaged costing a small money in repairs. In case a timing belt snaps on a non-interference engine, the engine is going to be damaged but won’t cost too much in repairs as an interference engine.
The failure of a timing belt is probably the most typical main reasons why cars breakdown. If you’re acquainted with the timing belt, the way it functions and the way to recognise whether or not some thing is wrong with it, you’ll be able to avoid serious damage to your vehicle and you will know when you should replace it. Know-how about timing belt symptoms could save you from having to experience being stuck on the side of a road due to a broken timing belt.
With no correctly functioning timing belt, an engine’s pistons would stop to operate therefore a vehicle will be not able to work. Worn timing belt can’t perform its job appropriately for this reason old timing belts can result in performance issues with a vehicle.
Now there are several timing belt symptoms to take into consideration: if the car’s engine vibrates a lot which it leads to the whole car to shake, in case your car starts belching much more exhaust than normal, if you encounter difficulty in starting the car or in the event you hear strange noises from the car’s engine. These types of are just some of the common timing belt symptoms. In the event you encounter one or more of those it might be ideal to consult with a mechanic as quickly as possible. Other timing belt symptoms can vary then one of them is emitting of excess smoke. When your car emits smoke a lot more than the usual that is a sign which your timing belt could have a issue.
These are the basic timing belt symptoms that you need to watch out for if you wish to prevent causing major damage to your car’s engine. Some of the reasons for timing belt damage are oil leak and getting too hot. To prevent these issues it’s better which you carry out regular check-up for your vehicle. If you’d like to learn more about timing belt as well as other timing belt symptoms, you could browse the internet for websites which has this type of information.
If you have ignored the symptoms and your vehicle conks out and stops running it’ll probably are already too late. So keep in mind, at the time you notice these timing belt symptoms it might be better to get your car checked. Awaiting the damage to become severe is certainly not something you will want to do.
Optional Information:
Year: 1999
Make: Ford
Model: transit
Engine: 2.0lt petrol
Optional Information:
Year: 2004
Make: Hyundai
Model: sonata
Engine: 2.4
Be aware the oil pump pulley drives a balance shaft, and due to the gear reduction in the oil pump the timing mark is only correct once every 720 degrees. Meaning if the oil pump sprocket has spun with the belt off the vehicle and you realign it to the timing mark you have a one in two chance of it being correct. To verify you have the correct position, there is a 14mm bolt in the left hand side of the block (right on the balance shaft ‘tunnel’. When this bolt is removed, you will be able to stick a screwdriver or othr metal object 2.5 inches into the block when it is in the correct position; the shaft also will not turn more than 15 degrees in either direction. When you are out of phase, you will only be able to go in about one inch.
Crankshaft match marks
Align marks on timing belt pulley and pump body.
Camshaft pulley alignment marks
1. Align marks on camshaft pulleys with alignment marks on seal plate.
2. Install timing belt. NOTE: No looseness should exist on the tension side and at the camshaft pulleys.
3. Loosen tensioner lock bolt.
4. Turn crankshaft 2 revolutions in direction of rotation and check that timing marks are still in alignment.
5. Tighten timing belt tension lock bolt to 27-38 ft lb (32-52 Nm).
6. Apply a force of 22 lbs to timing belt between camshaft sprockets.
7. Belt deflection should measure 0.30-0.33 in (7.5-8.5 mm)
NOTE: Replace tensioner spring if timing belt deflection is excessive.
Timing Belt Installation
1. Install lower timing belt cover.
2. Install upper timing belt cover.
3. Install power steering drive belt and adjust belt tension.
4. Install fan pulley.
5. Install generator drive belt and adjust belt tension.
6. Install A/C drive belt and adjust belt tension.
7. Install splash guard.
8. Install fan and fan shroud.
9. Install 4 fan bolts. Tighten to 24 ft lb (33 Nm).
10. Install fan shroud mounting bolts.
11. Install fresh air duct.
12. Connect hose to resonance chamber.
13. Connect battery negative cable.
Knowing When To Change A Timing Belt
Changing a timing belt on your vehicle can be a very time consuming. This is due to the fact that there are a lot of components under your hood that must be removed before you can even get to your vehicle’s timing belt. This is why it is best to change a timing belt at the same time that you are planning on doing other repairs and maintenance practices to your vehicle such as putting on a replacement water pump or changing belts like the serpentine, air conditioner or water pump belt.
Timing belts tend to begin breaking down at around 60,000 miles. You will notice the power to your vehicle begin to slow down, the fuel efficiency of your vehicle can be affected as well as your vehicle showing signs of working harder.
How To Change A Timing Belt or Timing Chain
Different vehicles have different patterns for changing a timing belt or timing chain. The best thing to do when you want to change the timing belt is to look over your owner’s manual that is specific for your make and model vehicle. You can also purchase an automobile repair manual that is designed specifically for the needs of your automobile at any automotive repair shop in your local area.
The basics to changing a timing belt on the vehicle however are pretty much uniform. The steps to do this are as follows:
Step 1. Before you can replace the timing belt on any vehicle it is a good idea to let the vehicle sit overnight so that the engine is completely cool and there is a reduced chance of experiencing serious burns from the engine.
Step 2. As it is with most vehicle repairs you must first disconnect any power supply to the vehicle. This means that the battery cables must be removed from the battery terminal and tied back so that there is no risk of them touching the posts or other parts of the vehicle while working.
Step 3. Place blocks in front and behind the wheels of your vehicle so that there is not chance of the vehicle rolling and accidentally causing injuries to you or others who may be around.
You will now need to remove any obstructions that may be in the way of getting to your timing belt. This includes:
Step 4. Make sure that the air intake assembly to your vehicle is completely removed.
Step 5. Locate the pulley that powers the supply to your water pump if this is in the way on your vehicle. You will need to loosen the bolt holding this pulley in place.
Step 6. For some vehicles it may be necessary to do the same for other equipment such as the power steering pump. This will require you to loosen the bolt and remove the belt that is around the pulley. You can then unbolt the power steering pump and move it out of your way.
Step 7. Line up the mark on your crankshaft pulley to the O that is on the timing scale with a large wrench. You can find the timing scale molded on your vehicle engine block.
Step 8. Using the right sized socket you will have to removed the bolts that are holding the timing belt cover on. When you have the bolts removed you can then pull off the timing belt cover.
Step 9. Inspect the timing belt tensioned bearings for any looseness or noise. If these problems exist you will need to replace the timing belt tensioned bearings as well.
Step 10. Locate your camshaft and check to makes sure there are no leaks in the crankshaft or camshaft seals. If you do notice leaking this could be an early sign that there will be premature failure for your new timing belt. It is best to replace these seals now instead of waiting for bigger problems and the chance of having to do all of this work again.
Step 11. For most vehicle makes and models you should now be able to locate the timing belt. Make sure that all timing marks on your belt are properly lined up. Loosen the timing belt tensioned and you will then be able to remove the timing belt very easily. Make sure that the camshaft and crankshaft for your vehicle’s engine are secured and that they do not move while your timing belt is off of your vehicle.
Step 12. Place your new timing belt on the same way that you removed it. Make any tension adjustments to the timing belt as necessary. Inspect the new belt to make sure that it is fitting over the teeth for the timing sprockets correctly. Makes sure that you do not over tighten the belt.
Step 13. When replacing the timing belt cover install a new gasket to seal the cover correctly. Do not use an old gasket as this will not seal properly.
Step 14. If you had to remove any pumps at the beginning of this project you will now have to hook them back up again. This includes the water pump, power steering pump as well as any other accessories that may have gotten in the way at the beginning of this project.
Step 15. Visually inspect all timing marks to make sure that they are still aligned correctly.
Step 16. Reinstall your vehicle’s air intake assembly that was removed in the beginning.
Step 17. Reconnect your vehicle’s battery. Make sure that there is no corrosion around the posts or the battery cables while you are at this step.
Step 18. Turn on your vehicle and look for any problem areas such as leaks that there may be prior to driving your vehicle. Do not hesitate or postpone any repairs that may be needed.