I had my timing belt replaced at a dealer and they did not change the tensioner. As a result, the tensioner belt broke....i can get the tensioner replcaed, is there anything I should be concerned about or address with them?
The only issue is if the valves were bent as this is an interference motor. There is no scheduled replacement of the tensioner. I would have the motor pressure tested before replacing the tensioner to make sure nothing else was affected when the tensioner broke.
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The procedure required depends on which belt belt you are talking about. The external belt that runs the alternator, water and power steering pumps and A/C is replaced by first locating the belt tensioner. There is a square "hole" in the tensioner that a 1/2 inch breaker bar or torque wrench that is used to release the belt tension so that a new belt can be slipped into place. There is usually a diagram somewhere near the radiator that shows the proper belt path to use. Once the belt is put into place the tensioner is released and allowed to apply the required tension on the belt.
If you are talking about the timing belt, replacement requires removal of the aforementioned accessory belt and removal of the engine timing cover. You will need to refer to a service manual for the correct timing component alignment when installing a new belt. It also has a tensioner similar to the one used for the external accessory belt.
If the timing belt broke while the engine was running there is a possibility with some engines that internal damage may occur. This depends on the engine's valve clearance - check the service manual or a dealer to find out if this is a probability with your particular model. If so, the cylinder head will need to be repaired as well as any potential damage to individual pistons.
Pull your Serpentine belt, remove the Cam Belt Cover, (it may be advantageous to remove front wheel in the Cam Belt side) Remove the timing belt and time the engine to specifications, make sure you are on #1TDC, remove the tensioner and replace. if there is and Idler pulley replace that as well. You can use Spray Carb Cleaner to clean the pulleys before replacing the belt. Note, you may have to also remove the Harmonic Balancer and pulleys from the crankshaft.
FYI, did you know about this, sorry no specs, hope this could help.
MILPITAS CA USA
Make: MAZDA Model: 626
Model Year: 1999
Manufacturer: MAZDA NORTH AMERICAN OPERATIONS Mfr's Report Date: MAY 09, 2000
NHTSA CAMPAIGN ID Number: 00V134000 NHTSA Action Number: N/A
Component: ENGINE AND ENGINE COOLING:ENGINE
VEHICLE DESCRIPTION: PASSENGER VEHICLES. AN EXTERNAL SPRING IN THE TIMING BELT TENSIONER COULD BREAK.
THE BROKEN SPRING MAY GET CAUGHT IN THE TIMING BELT, RESULTING POSSIBLE ENGINE STALLING.
DEALERS WILL CHECK THE TENSIONER INSTALLED AND REPLACE IT IF THE VEHICLE IS EQUIPPED WITH THE AFFECTED TENSIONER.
OWNER NOTIFICATION BEGAN SEPTEMBER 28, 2000. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT MAZDA AT 1-000-222-5500. ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-888-DASH-2-DOT (1-888-327-4236).
I hope Honda did the belt. If the belt broke, the engine could suffer damage, however if the belt was installed off a tooth or two you would have hard starting and poor performance. It's also possible the installer neglected to bolt down the crank shaft sprocket or set the tension correctly in which case the belt could slip off and cause you to stop and possibly damage the engine. If the Honda did the belt, believe me they will know immediately what the problem is, so stand your ground because it could get expensive. The damage in this case would be valves colliding with pistons resulting in bent valves. The top (head) of the engine would have to be removed to be reconditioned and valves replaced. Big job. That's the worst, but it could be something simpler. Good luck.
It is VERY IMPORTANT that you give this Priority Attention as FAILURE in this AREA Can cause CATISTROFIC ENGINE DAMAGE Below is one Item I found Related to your Complaint.
An external spring in the timing belt tensioner could break.
The broken spring may get caught in the timing belt, resulting possible engine stalling.
Dealers will check the tensioner installed and replace it if the vehicle is equipped with the affected tensioner.
Owner notification began September 28, 2000. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact Mazda at 1-000-222-5500. Also contact the National Highway Traffic Safety Administration's Auto Safety Hotline at 1-888-DASH-2-DOT (1-888-327-4236).
This can be caused by not tensioning the belt corectly.When fitting a new belt you should allways replace the tensioner,and make sure the water pump pulley is in good working order.Its always wise to get your timming belt from the dealer.as others are nown to be faulty.Fit new belt follow manuel when doing so.good luck
Did you have the dealer change the belt because it broke ?
If this is the case they should know if it is an interfearance engine and if it is in fact an interference engine they should have checked the valves. If you had the belt changed just because you were scared it was going to break on you then I am sure the car ran fine when you took it in.
The explanation you gave sounds to me like they have the belt a tooth off and they need to re do it because the timing is out.
I hope this helps