Timing Belt change issue - Toyota Nation Forum : Toyota Car and Truck Forums

kendrick · 02-07-2010, 05:13 PM

I finally got the starter off. per the instructions "jam a big screwdriver in the teeth of the flywheel" while an assistant unbolts the pully

1) had a thought to mark TDC on the belt/pully at the top cover so I can make sure the factory timig mark is really where it should be after done. will this work?

2) big problem is I cant keep the flywheel from moving any suggestions as to a tool or method of keeping it in place? the last thing I want to do is break something or mess the timing up.

Bitter · 02-07-2010, 05:18 PM

you can always re-time the engine if you have to, not a huge deal.

kendrick · 02-07-2010, 08:17 PM

is it possible to make the tdc marking incorrect? I havent been able to pull it off so I dont know if it is keyed or not

speedy25 · 02-08-2010, 06:30 AM

stick a screwdriver in the #1 spark plug hole and CAREFULLY turn the crank to get the piston to TDC. Then you can check your marks.

-SP

ganda1f · 02-10-2010, 11:23 AM

If you have manual transmission, just engage 4th gear and have an assistant push the brakes. Then unbolt the pulley. The bolt is really tight.

The crank pulleys have a key, it should be pointing up along the engine. The engine leans a tiny bit so it may not be absolutely vertical. Then the hole in one of the spokes of the upper timing pulley should align with a notch on the camshaft bearing cap. Then you have it on TDC on compression stroke.
At least that is how things are on 4AFE (1.6l). I doubt it would be different on 7AFE.

javapop · 03-17-2010, 12:01 AM

Quote:

Originally Posted by speedy25

stick a screwdriver in the #1 spark plug hole and CAREFULLY turn the crank to get the piston to TDC. Then you can check your marks.

-SP

Does the piston need to be at the top (screwdriver at highest point) or at the bottom of shaft for TDC

speedy25 · 03-17-2010, 08:52 PM

TDC = TOP dead center

-SP