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Posted on Jan 02, 2017
SOURCE: timing belt or timing chain?
You 98 Corolla has a timing chain that it internal and need no normal maintenance. It uses a hydraulic/spring tensioner to keep things tight and as long as its quiet, everything is fine.
Your drive belt (not to be confused with a t. belt) is the external belt you see on the passenger side of the engine. It drives you alt, water pump, A/C and power steering. It uses a spring loaded tensioner to keep the belt tight. These can weaken over time and cause a rattle noise and belt slippage.
Posted on May 19, 2009
Just the guide is probably making the noise. So either a new guide or a new chain. I would start with guide first, unless chain looks loose or cruddy
Posted on Sep 16, 2009
SOURCE: when to replace timing chain
Normally you don't have to replace the timing chain unless it develops excessive slack in it. They aren't like timing belts that are recommended to be changed at different intervals depending upon the manufacturer. If your milage isn't excessive then you should be fine. If the car has high miles you can have it checked to see if it has too much slack in it. Hope that helps.
Posted on Nov 21, 2009
Your Timing Chain Tensioner is located in the Lower Front of your engine.
#1) you'll have to disconnect your negative Battery cable.
#2) Remove the Top Engine cover to give you better access to the Front of Engine.
#3) Then you'll need to remove your alternator and with wiring attached put it off to the Side you might have to tie it with a wire to secure it.
#4) then you'll need to remove your Power Steering Leave the Lines on it and Put it to the sideas well , Tie off if necessary.
#5) then Jack up the front of your car,make sure you Put Good Stands under the car to keep it secure.while you work under it.
#6) then remove the TWO front Oil Pan Bolts Only the very 2-Front ones.
#7) Then directly above the Oil pan front of the Engine you'll see your Crank Shaft Pulley Remove it, You will need a Puller to Remove it.then the Timing Chain Cover, There are Several bolts Holding it on to the front of the Engine.
#8) Remove ALL the Bolts on Timing over, then Take cover Off,It could be a Little Stubborn ,if All bolts are out for sure, Take a Small plastic mallet and Tap the Cover Easily,until it comes off.
#9) Now before you remove anything else there is a Timing Mark on the Cam Shaft and one on the Crank Shaft,NOTE: BESURE you line them marks up,The Cam Shaft Mark should be pointing Straight Down--And the Crankshaft Mark needs to be Pointing Straight up.and Lined up with the Top Timing Mark.If the are Not
NOTE: Rotate the Engine by Hand Turning the Sprockets until they are LINED Up.
Then Take off the Top Cam Shaft Mounting Bolts,then Pull Sproket and timing Chain at the Same Time.
Then Loosen the Chain Tensioner Bolt with out taking it ALL the Way OUT. then remove your Chain Tensioner.
If your this far i Recommend that you Replace The Timing Chain,Cam Sproket and Crankshaft Sproket as well.
If not the Install your new Chain Tensioner,And Just Simply Reverse the Un-Install Directions.To Put All back Together.
Do Replace the Timing Cover Seal. Using Proper Seal Remover and Installer.
Also before you put your Timing cover back on CLEAN the Surfaces of the Engine and the Cover.And Use a Gasket Sealer and Mount to Block ==Lining Up ALL your Timing Cover Bolt Holes. Let it set a Short time a Few Minutes at Least. To prevent Slipping when installing your Timing Case Cover.
1- Last Thing Torque your Timing Chain Tensioner at 89 Inch Pounds.Which rewuires a Torque Wrench.
And Torque ALL your Timing Cover Bolts at 97 Inch Pounds.Do NOT Over Tighten You'll Strip them.
MAKE Sure the Timing Marks are Still lined up.
This will get your Timing Chain Tensioner Replaced. Thanks for using FixYa From: d_hubbs
Posted on Aug 17, 2010
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