Author Topic: timing chain and cam rplacemet  (Read 3739 times)

JesseP

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timing chain and cam rplacemet
« on: July 17, 2005, 03:40:39 PM »
what is the proper crankshaft and cam position to reinstall the cam so the timming will be rite

Offline JonnyHonda

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RE:timing chain and cam rplacemet
« Reply #1 on: July 18, 2005, 10:13:35 AM »
Hi JesseP, the following is a quote from the Haynes manual, so creidts to them, (that should keep the copyrighters happy ;)  )

 http://www.haynes.com/

2. Rotate the engine until pistons Nos 1 and 4 are at top dead centre, then alight EXACTLY the T mark for cyclunders 1 and 4 with the static timing mark, as viewed through the aperture in the contact breaker base plate. During this operation, maintain tension on the camshaft drive chain and check that it is still correctly engaged with the sprocket.

3. Slide the camshaft chain sprocket on the camshaft, but do not seat it in its final position. Slide the camshaft chain over the right hand end of the camshaft and lower the camshaft into position. It MUST be positioned so that the keyway is in the 12 o'clock position and the scribe line is horizontal, when viewed from the right hand end. FAILURE TO POSITION THE CAMSHAFT IN THIS MANNER WILL RESULT IN INCORRECT VALVE TIMING

4. Loop the camshaft cjhain around the camshaft sprocket which is still unattached and then slide the sprocket into position so that it can be bolted to the camshaft flange. The camshaft MUST NOT ROTATE during this operation, so the sprocket may have to rotated in relation to the chain until the bolts holes aligh exactly. Tighten the bolts which retain the sprocket, and recheck the alignment of the timing marks. They must register exactly.

Offline JonnyB

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RE:timing chain and cam rplacemet
« Reply #2 on: July 18, 2005, 10:22:22 AM »
That all said basically make sure Pistons 1 an 4 are at TDC when the timing mark show in the first picture is aligned with the mark show in the second picture and the cam shaft is positioned as in the third picture.





Then bolt up the cam sprocket.

[Edited on 18/7/2005 by JonnyB]

[Edited on 18/7/2005 by JonnyB]
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