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Timing belt replacement is one of those decisions you have to make when you have time and less pocket money to support the dealer. If you have the skills, it's not a problem. For an overview of what to do, see the article below.
SPaul Johnson- April 27, 2016
This article applies to the Acura TL/MDX 3.5L (2009-2014). (May also apply to other Honda/Acura vehicles with J35 engines.)
A timing belt does exactly what it sounds like: it keeps everything on time. This job is labor intensive, which means it will take some time. The main reason you would want to do this job yourself is to save money. Most overhead cam (OHC) engines require replacement to prevent valve contact with the pistons in case the belt breaks or slips. The main reason you don't do it yourself is that you don't have the time, patience, or tools to do the job. In that case, it would be much better to take the device to the dealer or your favorite service center to have the work done.
MATERIALS are needed
- Tool set with ratchet, crowbar, socket and wrenches
- Jacks, jack stands and wheel chocks
- moment key
- torque angle tool
- Shock gun
- Harmonic Balancer screw 19 mm (Lisle 77080)
- Tool for holding the crankshaft pulley (Lisle 77260)
- Never
- Blue Lockts
- Buy wipes
- Nitrile gloves
- coolant drain pan
- chimney
If you really want to, you can simply replace the timing belt. However, it is strongly recommended that the water pump, intermediate cylinders and tensioner are also replaced in this work. You'll probably want to replace the coolant right away, since you drain most of it when you replace the pump. Although not required, the use of a percussion gun and the listed 19mm Lisle buttplate is highly recommended. Ask anyone who has tried to remove a harmonic balancer bolt with a pole and a 6 foot collet and still can't get the bolt out.
Note
Most of the pictures in this text are from the Honda Pilot with the J35 engine. While some things may not be exactly the same as the Acura TL or MDX, the general process is the same.
Step 1 - Connect and support the vehicle
Place studs in front of and behind the rear wheel. Apply the parking brake. Break off the lug nuts on the passenger wheel, but do not remove them. Raise the front end of the vehicle and place it on the jack stand. Once you are safely on the stands, remove the passenger end of the wheel to remove the wheel nuts. Place the bike on the edge so that you are not in the way. In the passenger side wheel arch, remove the plastic cover to reveal the harmonic balancer and the lower half of the engine.
Korak 2 - Remove the klinasti remen
If it is not already open, unlock the lid, lift it and support it. Remove the engine covers (if equipped) to expose the front end of the engine (passenger side). Place the coolant drain pan under the radiator, open the drain tap and drain the water from the radiator. Find the tension pulley. Using a 14mm socket or wrench, turn the tensioner counterclockwise to release belt tension and remove the belt from the tensioner pulley or power steering pump pulley. Release the tensioner and remove the key or socket. Complete removal of the V-ribbed belt. You kind of notice the rotation of the v-ribbed belt as you put it back on the pulleys.
Step 3 - Remove the crankshaft pulley
Use a Lisle 19mm crankshaft bolt socket wrench and an impact gun to remove the crankshaft bolt. Rock the crankshaft pulley while pulling to remove it (Figure 3). Be careful with the key that secures the pulley as it can easily fall off the crankshaft and get lost.
Step 4 - Remove the belt tensioner
Remove the two screws indicated by the red arrows in Figure 4 to remove the belt tensioner.
Step 5 - Remove the timing belt covers
On the underside of the engine, remove the 10 mm screws that secure the underside of the cover to the engine (Figure 5). The cover does not come off yet as the two top covers hold it in place until it is removed. Remove all screws that are accessible from the bottom.
Open the top and continue removing the timing cover bolts until all are removed. A section of the wiring harness is attached to each top cover. Separate them from the covers to make it easier to remove the cover. When finished, remove the two top covers to reveal the camshaft sprockets and timing belt. After the top covers are closed, remove the bottom cover.
Step 6 - Align the weather marks
Remove the timing belt alignment pulley from the crankshaft and install it with the plastic timing belt covers to prevent misalignment (Figure 6).
Reinstall the crankshaft bolt on the crankshaft and tighten it by hand (without the pulley). Using a socket wrench and a bar (or long ratchet), tighten the crankshaft bolt until the engine starts to run. Slowly rotate the engine crankshaft until the crankshaft alignment marks (center image in Figure 7) are aligned. This requires some patience as each piston enters the compression stroke and is then allowed to release pressure. Check that the crankshaft timing marks are alignedoba Cam marks to ensure all marks are aligned (left and right sides, Figure 7). According to Murphy's Law, the crankshaft will probably rotate 360° outwards. If this is the case, turn the handle another 360°.
Note
It is important to note that when the crankshaft timing marks are aligned, the front cam will have a mark that is aligned with the timing mark on the cover. However, this may not be an accurate time stamp. The incorrect mark has a "5" while the correct one has a "1" as indicated by the red arrow on the right side of Figure 7. Also note the white marks on the timing belt and gears that are placed there for clarity. Your timing belt will only have these marks if you place them there.
Step 7 - Remove the motor mount
Place the jack under the engine and place a piece of wood between the jack and the engine. Raise the engine just enough to support it (until the engine starts running). Remove the two 12mm bolts to separate the power steering pump from the engine. Place a cloth under the power steering hose with the hose clamp. Loosen the clamp on the power steering hose by sliding it back onto the hose. Disconnect the hose from the power steering pump, being careful to spill as little fluid as possible. Get the hose out of the way by bending it back on itself. Move the power steering pump to the rear of the vehicle. Remove and remove the screws securing the base. If the power steering reservoir is in the way, remove it. It should fit the interference and be pulled all the way. Remove the screw securing the bracket to the top of the engine mount on the engine side. Remove the three screws that secure the motor side bracket to the motor so that it can be removed. One of the screws on the inside of the engine mount on the engine side is countersunk and obscured which can make removal difficult.
Step 8 - Remove the old timing belt components
Double-check the timing marks to ensure proper alignment. For quick removal, use the side cutters and cut through the timing belt. If the timestamps move a little, it's not a big problem. Remove the remnants of the timing belt. Remove the timing belt tensioner (Figure 9) by removing the center bolt. This screw is a special shoulder screw. So make sure you don't miss them. There is also a guide inside the tensioner. Both the bolt and the guide are reused to install the new tensioner.
Remove the two bolts securing the hydraulic tensioner to remove it from the engine. Remove the auxiliary pulley with the middle bolt. This screw will probably have Locktite on it, so be prepared for a bit of a fight. Remove the remaining five bolts from the water pump to allow removal. When removing the pump, some residual coolant may flow out of the engine. Note that there are studs on the water pump that can ensure it stays attached to the block. A small pry bar or long screwdriver will make removal easier. Clean the pump area with a dry cloth. Close the drain plug on the refrigerator if you haven't already. Make sure the front of the engine is completely free of grease, oil and coolant before proceeding.
Step 9 - Install new timing belt and accessories
Make sure the o-ring is in place on the new water pump and secure it to the block with the five bolts. Tighten to 8.8 lb-ft or 108 in-lbs. Install a new hydraulic tensioner. This is imperativeLeave the grenade pin in place!If you don't, everything will be terribly difficult. Install a new idler pulley with blue locktite to ensure it stays secure and torque to 33 lb-ft. Double check that the timestamps are still aligned. If necessary, use a small mirror to ensure alignment. Starting at the crankshaft, thread the new timing belt counterclockwise through the gears (Figure 10). That means from the crankshaft to the idler gear to the front camshaft, the gear under the water pump and to the rear camshaft sprocket, leaving where the idler pulley is loose. The idea is to make sure the belt stays taut until you get to the tensioner. This will ensure that the timing is correct when everything is put together.
Remove the bushing from the old tensioner and install it on the new one from the rear. Install the idler wheel with the special shoulder bolt and torque to 19 lb-ft. Double-check the timing marks to make sure they are set correctly. When satisfied, remove the grenade pin from the hydraulic tensioner. All of them need to be installed. So, rotate the crankshaft 720° or two full revolutions to align the crankshaft timing mark with the mark on the block. If everything still looks flush, add coolant to ensure a leak-free installation. Reattach the engine mount to the block. Apply some blue locktite to the bottom three screws. Tighten them to 33 lb-ft. Since they go through the water pump, it's a good idea to tighten them to the correct torque to prevent the pump from warping and leaking. Place the small screw that fits on top of the arm. Reinstall the engine mount and bracket to reattach the engine to the chassis. Remove the jack from under the engine.
Step 10 - Install the timing belt covers
Remove the crankshaft bolt from the crankshaft. Install the timing belt adjustment disc onto the crankshaft. Place the lower cover of the timing belt and fasten it with screws. Replace the crankshaft pulley and bolt. Tighten the bolt to 47 lb-ft, then an additional 60° using the pulley carrier to hold it in place. When done correctly, the pulley carrier will rest against the body as the bolt tightens and continues to rotate (Figure 11).
If everything looks good so far, make sure all tools are close to moving parts and start the vehicle. This does no harm and allows you to check the motor before turning it all the way up. Let the engine run for about a minute at most. If everything looks good, turn off the engine. Continue by replacing the timing belt top covers and bolts, as well as the wiring. Retighten the power steering pump. Replace the power steering reservoir if it was previously displaced. Reconnect the power steering hose to the pump and tighten the clamp. Install the V-belt tensioner pulley. Replace the V-ribbed belt (Figure 12). Replace the wheel arch covers. Install the tire. Raise the vehicle to remove the jack stand.
Featured Video: Honda/Acura J35 Timing Belt Removal
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FAQs
2009 to 2014 Acura TL and MDX How to Replace the Timing Belt and Water Pump? ›
Belts themselves aren't that expensive. The real cost is in the labor, because a lot of parts need to be disassembled to get to the belt. Shopping around to get a few quotes is your best bet to get the best deal, but you can expect to pay anywhere from $409 to $919 (including parts and labor).
How much does it cost to replace a timing belt on a 2009 Acura TL? ›Belts themselves aren't that expensive. The real cost is in the labor, because a lot of parts need to be disassembled to get to the belt. Shopping around to get a few quotes is your best bet to get the best deal, but you can expect to pay anywhere from $409 to $919 (including parts and labor).
When should I replace timing belt on 2014 Acura MDX? ›Acura Major Service – Timing Belt Replacement Costs
Fortunately, the recommended replacement intervals for most timing belts are around 60,000 to 100,000 miles.
Changing a timing belt and water pump can take anywhere from 1-3 hours depending on your skill level, so make sure you have the time and space to complete the job.
When should I replace my water pump on my Acura MDX? ›Water pumps are designed to last at least 100,000 miles, however, if your water pump fails, you should replace it with a high-quality original-equipment level unit. Less expensive replacement pumps are available, but they might only have a service life of 30,000 miles.
How many hours does it take to replace a timing belt? ›Replacing the timing belt is an expensive service. It is an intricate, labor-intensive process that can take 4–8 hours, depending on the vehicle. But replacing the timing belt before it breaks will prevent engine damage and save you money in the long run.
How many hours of labor does it take to change a timing belt? ›A cambelt change is a complicated, labour-intensive procedure that can take 4–8 hours, reliant on the vehicle make and model. But changing the cambelt before it breaks will help you avoid engine damage and save you money in the long run.
Can a timing belt last 200 000 miles? ›It is safer to replace the timing belt even earlier than the manufacturer recommends. In general, however, timing belts needs to be replaced from 60,000 miles up to 150,000 miles.
Will my car run better after changing timing belt? ›No timing belt will give an increase in performance - it's just not possible. Its main job is to keep the timing in check. Having your timing belt replaced and noticing an increase in performance is just a mix of the engine operating at peak efficiency and a good hit of placebo effect thrown in for good measure!
Should I change out my timing chain when I replace my water pump? ›Should I replace the water pump with the timing belt? It is not necessary to replace both at the same time, however, it is highly recommended due to a high risk of engine damage. All parts of the synchronous drive have the same mileage and wear.
Can you change the water pump without changing the timing chain? ›
Hello. Yes you can replace the water pump without replacing the serpentine belt. If the belt is worn, and it breaks while you are driving, you can damage a lot of other components in that area. Typically the price of a serpentine belt is relatively inexpensive.
Do you have to change timing chain when changing water pump? ›Timing chain-driven water pumps should always be replaced at the same time as the timing chain to reduce warranties, customer comebacks, and preserve long-term system performance.
How much does it cost to replace a timing belt on a 2014 Acura MDX? ›The real cost is in the labor, because a lot of parts need to be disassembled to get to the belt. Shopping around to get a few quotes is your best bet to get the best deal, but you can expect to pay anywhere from $409 to $919 (including parts and labor).
Does 2014 Acura MDX have timing belt or chain? ›If your Acura has a V6 engine like the Acura MDX or the RLX, it's manufactured with a timing belt that needs to be replaced for maintenance.
At what mileage should a water pump be replaced? ›You should replace the water pump after 60,000 to 100,000 miles for most modern vehicles. If your car is new, there is no need to worry about it. However, if you drive an older car, be sure to mention it to your mechanic.
How much does it cost to replace a timing belt on a Acura MDX? ›The average cost for an Acura MDX Timing Belt Replacement is between $1,010 and $1,143. Labor costs are estimated between $415 and $523 while parts are priced between $595 and $620.
How much does it cost to replace water pump and timing belt? ›The Average Cost to Change A Water Pump Is $678-$811. This price range is based on national averages for all vehicles and does not factor in taxes, fees, or your particular make and model. Related repairs or maintenance, such as the timing belt or serpentine belt, may also be needed.
At what mileage does a timing belt fail? ›Cambelts or timing belts usually need to be replaced, usually between 40,000 and 100,000 miles.
What else should be replaced when replacing timing belt? ›When you have the timing belt replaced at a reputable service center, the service should also include a few other things. The tensioner and idler rollers should also be replaced. The technician will also inspect the crankshaft seal and the camshaft seal, replacing them if necessary.
How often should timing belt be changed? ›Now that technology has improved, timing belts don't need to be changed as often as in previous decades, but you should still book an appointment to replace the belt between 60,000 and 100,000 miles. In the past, every 60,000 miles was a hard rule.
How long can you drive without changing timing belt? ›
The recommended replacement according to mileage ranges from 60,000 miles to 150,000 miles. If your vehicle is 6 to 10 years old, it is recommended to replace the timing belt.
Can a timing belt last 100000 miles? ›Timing belts are built to last up to 100,000 miles before requiring change, but that doesn't mean you should call a service technician when your odometer hits 99,999. Because of the damage that can be caused when the belt breaks, it is never recommended to exceed 80,000 miles on the same belt.
What's the longest a timing belt has lasted? ›Time is perhaps more important than miles. Seven years is the maximum life of the timing belt recommended by most manufacturers. For example, the belt should be replaced even if the engine has only 30,000 miles but is seven years of age.
What belt do you replace at 100000 miles? ›However, if the vehicle has a timing belt, there is a very specific interval for replacing it. Timing belt replacement is generally recommended every 60,000 to more than 100,000 miles, depending on the vehicle manufacturer.
Is there any warning before timing belt breaks? ›You need to look out for signs and symptoms of a weakening timing belt so that you can take action before it is too late. These include loud clicking sounds coming from your engine, squealing sounds, and your engine failing to start at all.
Are there warning signs of timing belt failure? ›Common signs include a ticking noise coming from the engine, an engine that won't turn over, engine misfires, and oil leaking in front of the motor.
What happens if timing belt breaks while driving? ›When a timing belt breaks, you will first hear a ton of noise, and then your engine will die completely, leaving you stranded. Even if you're driving fast on a highway, your vehicle will literally stop running.
What throws off the timing belt? ›The tensioner that keeps the belt taut is pressurized by the engine oil. If the tensioner has no oil pressure, the belt will become loose and possibly disengage from the pulleys and/or break. If the camshafts don't have enough oil pressure to operate properly, they will also lock up, causing the timing belt to break.
Will a new timing belt improve mpg? ›Better Gas Mileage
For example, when your car's timing belt is replaced, you can expect the camshaft and crankshaft to be properly adjusted to the brand new belt, leaving you with increased fuel economy.
- Coolant Leak. The water pump has several gaskets that can be damaged or worn out over time. ...
- Engine Overheating. ...
- High Pitched, Harmonic Whining Noises. ...
- Water Pump Rust and Corrosion. ...
- Steam comes out from under your hood. ...
- Holes or leakage system on the dry side of the water pump.
Can a bad water pump cause timing belt to break? ›
When the water pump seizes, the gears stop turning with a strong force that will almost always break the timing belt. Water pump seizure is often caused by a problem with the cooling system, ignoring coolant flushes, or missed maintenance for the cooling system.
Does the water pump affect the timing belt? ›Relationship between the timing belt and the water pump
This means that if the timing belt is in bad condition, the water pump will start to malfunction sooner than later. On the other side, if the water pump fails independently, the belt will possibly have to be removed first anyway for the water pump to be replaced.
You may find the need to replace your timing chain at some point; however with the right tools, a service manual and some mechanical know-how, you can do it yourself. Just be aware that this is a major job and can have serious consequences for your engine if done incorrectly.
Will an engine turn over with a broken timing chain? ›A timing chain is supposed to last the life of a vehicle, within reason. But if it breaks, the pistons will come up at the wrong time and crush a bunch of the valves, leaving the crankshaft unable to turn. That would lock up the engine, just as if you had run out of oil and melted the crankshaft to the bearings.
When replacing a water pump what else should you replace? ›So when the water pump must be replaced, it is a good idea to go ahead and also replace the timing belt, timing belt tensioner and idler pulleys.
How many miles to replace timing belt and water pump? ›One of the more common recommended maintenance items at around 100,000 miles is your Timing belt and Water Pump.
Does Acura MDX need to change timing belt? ›Newer models use timing belts made of polyurethane and Kevlar for long life and durability. They can go as long as 100,000 miles although it's always a good idea to change it before then. Belt failure can cause extensive damage to the valves, pistons and other internal parts of the engine.
How much does it cost to replace a timing belt on an Acura TL? ›The average cost for an Acura TL Timing Belt Replacement is between $1,017 and $1,196. Labor costs are estimated between $472 and $595 while parts are priced between $545 and $601.
What years did the Acura MDX have transmission problems? ›The Acura MDX's biggest problem across the board is transmission failure, and the 2004 year model has earlier and more expensive failures than most other MDXs. The 2001, 2002, 2003, and 2005 MDXes are also plagued with total transmission failure, but it comes a bit later.
How many miles should a Acura MDX last? ›With proper maintenance and conservative driving, you can expect an Acura MDX to last between 250,000 and 300,000 miles—that's 16–20 years!
When should you change the timing belt on a 2014 Acura MDX? ›
Fortunately, the recommended replacement intervals for most timing belts are around 60,000 to 100,000 miles.
What are 3 ways you can tell if a water pump is bad? ›- Leaking coolant. One of the most common signs that your water pump is starting to fail is leaking coolant. ...
- Overheating engine. Another common symptom of a failing water pump is an overheating engine. ...
- Coolant leaks into the oil. ...
- Engine noise.
Your shop is correct that the labor time to replace the water pump is about five hours.
Can water pump last 200k miles? ›The expected lifespan of a water pump is 60,000 miles to 90,000 miles, but many can last longer than that. Usually, once your car has reached the coveted 100,000 miles, you can plan on the need for a pump replacement soon.
When should I replace my Acura TL timing belt? ›Under normal driving conditions, a timing belt will last for seven to ten years. The replacement process will take between three and six hours to complete, but you'll only have to replace the belt once or twice over the lifetime of your Acura.
Is it worth fixing a timing belt on a car? ›Avoiding timing belt replacement can be a huge mistake, however, as failure has the potential to cause serious damage to your vehicle's engine. A broken timing belt can render your vehicle inoperable, or even worse, bend your valves and pistons causing major damage to your engine.
Is it cheaper to replace a timing belt or timing chain? ›Generally speaking, timing belts have the advantage of being quieter and cheaper to produce and replace, while timing chains typically have a longer lifespan.
How much does it cost to replace a timing belt and water pump? ›The Average Cost to Change A Water Pump Is $678-$811. This price range is based on national averages for all vehicles and does not factor in taxes, fees, or your particular make and model. Related repairs or maintenance, such as the timing belt or serpentine belt, may also be needed.
How much is a water pump for a Acura TL? ›The average cost for an Acura TL Water Pump Replacement is between $834 and $1,087. Labor costs are estimated between $510 and $643 while parts are priced between $325 and $444.
How much does it cost to replace a timing belt on an 2014 Acura TL? ›The real cost is in the labor, because a lot of parts need to be disassembled to get to the belt. Shopping around to get a few quotes is your best bet to get the best deal, but you can expect to pay anywhere from $409 to $919 (including parts and labor).
At what mileage does a timing belt break? ›
However, if the vehicle has a timing belt, there is a very specific interval for replacing it. Timing belt replacement is generally recommended every 60,000 to more than 100,000 miles, depending on the vehicle manufacturer.
Do I need to replace water pump with timing belt? ›Should I replace the water pump with the timing belt? It is not necessary to replace both at the same time, however, it is highly recommended due to a high risk of engine damage. All parts of the synchronous drive have the same mileage and wear.
Will a broken timing belt destroy my engine? ›If the belt breaks while you are on the road, the car will break down immediately - and your engine can experience severe damage. You need to look out for signs and symptoms of a weakening timing belt so that you can take action before it is too late.
When should water pump be replaced? ›You should replace the water pump after 60,000 to 100,000 miles for most modern vehicles. If your car is new, there is no need to worry about it. However, if you drive an older car, be sure to mention it to your mechanic.
What to replace while replacing timing belt? ›When you have the timing belt replaced at a reputable service center, the service should also include a few other things. The tensioner and idler rollers should also be replaced. The technician will also inspect the crankshaft seal and the camshaft seal, replacing them if necessary.