Question about Cars & Trucks
Not sure, but you should be able to figure it out by how the valves set. At TDC of number one cylinder on the compression stroke, the valves should be fully closed and the cam lobes for #1 will be more or less in an upward position. If this is a Nissan, I think you want the "diamond" up, but just not positive about that.
If you want to play with it and try in both positions, first turn the crankshaft back a few degrees, so no piston is at the top of block. That way, no chance of valve kissing a piston crown, the kiss of death for interference engines. On a running engine with wrong timing, that is how valves get bent or broken.
Posted on Jul 31, 2013
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Posted on Jan 02, 2017
Not sure if it is possible to have it run smoothly by being off a tooth.
The hash marks on the cam pulleys line up with the timing belt cover that goes over those pulleys. Should be two notches in the cover.
As for the lower marks...those aren't really visible till the lower aux. belt pulley is removed. Then you'll have a clear view of the line up marks. One on the inside and one on the outter area of the pulley itself.
When you put the t-belt on...it is a good idea to replace the tensioner as well.
Also when you have the new belt on...adjust the tensioner so that the handle looking thing is centered between the two notches that hold the tensioner in place to the block.
After putting all that together, its a good idea to rotate the timing belt two to four rotations till the marks all line up again. That will let you know if you are hitting the valves or not.
Posted on Jan 27, 2009
Rotate the engine so that No. 1 cylinder is at TDC on the
compression stroke. Check that the timing marks are aligned on the
camshaft and crankshaft pulleys. An access plug is provided in the cam
belt cover so that the camshaft timing can be checked without removal
of the cover or any other parts. Set the crankshaft to TDC by aligning
the timing mark on the crank pulley with the TDC mark on the belt
cover. Look through the access hole in the belt cover to make sure that
the timing mark on the cam drive sprocket is lined up with the pointer
on the inner belt cover.
The spring cannot be used to set belt tension; a wrench must be used on the tensioner assembly.
Posted on Nov 25, 2009
My sincere apologies for the delayed response.
I am personally going back to answer your unanswered questions.
I do not know if you still need this information, but I am going ahead and answering it anyway. You may want to Print the Diagrams for future use.
CLICK on the following LINK. It has the Timing Belt and Mark(s) Diagrams you will need.
If you would: Before Clicking: Let me know if this helped you, or if you have any additional information or questions. Feel Free to contact me at FixYa.com!
Again my apologies...
Posted on Mar 07, 2010
Remove the two bolts, the timing chain tensioner and tensioner arm.
NOTE: LH shown; RH similar.
Remove the bolts and the timing chain guides.
CAUTION: Do not compress the ratchet assembly. This will damage the ratchet assembly.
Compress the tensioner plunger, using an edge of a vise.
If the copper links are not visible, mark two links on one end and one link on the other end, and use as timing marks.
If removed, install LH and RH crankshaft sprockets.
Position the tensioner arms and tensioners, and install the bolts.
Posted on Apr 07, 2010
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