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Timing chain broke when replacing chain and gears how do i make sure they are lined up properly

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Need to know the year and engine size of your vehicle to get you a correct procedure of the timing chain alignment.

Posted on Jul 12, 2010

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Chevy 2.8 1993 s10' timing chain and gears installing


Replacing the chain and gears requires removing the water pump, dropping the oil pan, removing the balancer and timing cover. Rotate the crank so the dots on the cam gear and crank gear line up at the 6 and 12 o clock positions respectively. Unbolt the cam gear and remove it and the chain. If you need to remove the crank gear you can use a three jaw puller or something similar to pull it off. Reinstall the crank gear lining up the gear with the keyway on the crank and press it on with the appropriate tool. Install the cam gear with the chain and make sure dots line up again. It may be necessary to remove the valve covers and rocker arms as well to rotate the cam shaft if need be.

Jun 22, 2016 | Cars & Trucks

1 Answer

How to change timing chain


make sure the engine is at TDC on compression stroke, remove all the parts to get to the timing gears, remove the bolts that fasten the cam gear to the camshaft, the crankshaft gear should just slide off but make sure you dont loose the keyway in the sump as this will cause a delay in the repair.
dont turn the engine at all when you are doing this as it will put your timing out, take the camgear off the shaft with the timing chain, you will be able to remove the timing chain now. when you replace the timing chain you need to put the chain onto the camgear and then onto the crankgear, there should be an arrow on each gear which has to line up without turning the engine, unless the crankgear has been moved you will only need to move the camgear on the chain (not the actual cam) until the arrows line up and it lines up with the retaining bolt holes for the camgear.
hope this helps you with your repairs.

Jul 22, 2014 | Chevrolet Chevy Cars & Trucks

2 Answers

Timing chain


It appears that you got it right but to be sure the check is on the timing chain there are 3 black links If you have it right then the black links will line up with the marks. If not then re adjust the gear that is not correct.- ensure that you have the ignition timing right as you may be 180 degrees out

Jan 12, 2014 | Saturn Ion Cars & Trucks

2 Answers

How to install timing chain


Rather than getting into a long winded write up....just go to your local auto parts store and purchase a vehicle specific repair manual. It'll contain the specific directions you'll need to perform the job.

Its very important to make sure you get it properly timed before you re-assemble. PAY PARTICULAR ATTENTION to the section telling you how to line up the timing marks on the crankshaft gear and the camshaft gear. Also, take time to closely inspect the gear teeth for any signs of wear / damage. This is the perfect time to replace them if needed.

It's also important to make sure you've cleaned all gasket mating surfaces thoroughly so as to prevent oil leaks.

This isn't a particularly difficult job, but it can be tedious. Don't get discouraged if the first time you put the chain on the timing marks have moved and no longer lineup. Odds are the camshaft, not the crankshaft will move out of alignment.

Persevere and it'll all work out.

Good luck!

Jan 03, 2011 | 1997 Chevrolet C1500

1 Answer

Replacing timing chain and gear jeep 4.0


yes when at TDC the marks will line up easier.

Jan 23, 2010 | 1995 Jeep Grand Cherokee

1 Answer

Chain broke


If the engine is running ok, leave it be. If you plan on keeping the vehicle for a long time and no ther issues exist with the performance, you may want to replace the chain, but you'll have to replace other parts as well. Cam shaft gear, crankshaft gear and chain should be replaced at the same time, gaskets, front seal, oil pan gaskets to name a few. Its a big job. I don't know the history of your engine, but I'm sure other parts will need replacing before the chain. Just a thought.

Jan 17, 2010 | 1998 Chevrolet Venture Cargo

1 Answer

I HAVE 1996 ISUZU . tIMING CHAIN BROKE. i AM REPLACING CHAIN AND GEARS. REPAIR BOOK SAYS TO ALIGN MARKS ON GEARS WITH TENSIONER MARKS. DO I ALSO HAVE TO MAKE SURE #1 PISTON IS ON COMPRESSION STROKE OR NOT?


Yes be sure the number one piston is at TDC firing stroke or compresson stroke and line up the timing mark pointer is pointed at exactly zero. One more thing when aligning the camshaft sprocket or sprockets be sure that when you are rotating the sprocket for the cam it is rotating in the correct direction and also be sure you observe the intake valve for number one shutting as you bring the marks up to alignment points, the intake valve and the exhaust valve should be shut when the marks line up if not you could have the cam sprocket off 180 degrees, get it right the first time or you may damage a valve trying to start.

Dec 29, 2009 | 1997 Isuzu Hombre

4 Answers

The timing chain,cam gear and crank gear has all been replaced.the timing has been set and still the truck will not turn over,backfires once and does the same hollow noise.is this is a freewheeling engine...


It definately sounds as though you've got your cam gear set 180 degrees off.When your timing is at top dead center your crankshaft will be at TDC on the guage, the cam gear will have both of the lobes at 10:00 and 2:00 away from the surface of the valve they serve on the number one cylinder. This can only be see if the valve cover is removed, which at this point I'm sure it is. Thank you, Dana

Oct 06, 2009 | 1997 Chevrolet S-10 Pickup

1 Answer

Eninge knock with a known cam gear problems.


i had the same problem. had a knocking on the engine and let the vehicle sit until i had time to look for the problem. my unknowing mom took the car without permission and the car broke down on her. as it would turn out the upper timing guide rail broke off and damaged the cam gears and broke the upper timing chain along with damaging both the right and left lower chain guides, and the tensioner was also damaged. i would recommend that u inspect the lower chain to make sure that everything is good.

Apr 09, 2009 | 1999 Suzuki Vitara

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