1HZ timing gear setting (1 Viewer)

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Jun 29, 2010
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Switzerland
Stupid me just pulled the timing gear (look at other thread about metallic noise) and didn't note where it was before!!!
Now I thought I just can use the marking of the pulleys but I can't turn the timing gears to the correct position, the piston hits the valves! How can I still install the timing gear correctly without having to remove the camshaft?? Please tell me I don't have to remove it!

I set before the camshaft to No.1 BDC. The crankshaft is probably not where it should be...

When the crankshaft pulley key is at about 12 o'clock the OO marking of the crankshaft gear is at about 2pm BUT it's 4-6 gears AWAY from the "O" of the idler gear!
Could I just remove the idler gear, set it to the correct OO position of the crankshaft gear and adjust the timing gear to the correct 11 position of the idler?
I would have guessed Toyota would set from the factory the timing gears at No1 piston at BDC...
 
Do you have an FSM? Its not a difficult job ,but I wouldnt start the job without one. You dont have to remove the camshaft. You are best off using the terminology used in the FSM to avoid confusion.

Can you turn the crank backwards?

These questions are related to diesel engines and are better off in the diesel forum.
 
Yep, I did... I did remove the idler gear and set it as FSM. I was just very confused that the idler gear was TOTALLY set at a wrong position, but then I think the factory just uses robots that use the key of the pulley to set the crankshaft and injection pump gear and then just install the idler gear at ANY position. That's how I would do it, much cheaper robot with no needs of camera to check where the markings are.

I started the engine 2 hours ago, did run fine! Just still not sure on that injection pump noise/movement (other thread), still waiting if anyone knows if that's normal...

Now working on the OME leafsprings, had a broken leaf and PU bushings are TOTALLY shot after 80'000km. Then we FINALLY can leave Quito!
 

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