Monday 25 May 2020

Timing

Today is - camshafts back in, set timing, cam cover, alternator bracket and exhaust. 
That leaves only the intake side, fill up with coolant and see if it works again.

I didn't change the cam belt this time - its good for another 5 years & best part of 80k miles before it needs doing again.

This is not an instruction - merely notes/pictures - my guide is the Haynes manual - plus I've done this a couple of times before now. The process makes logical sense - Zetec cam sprockets are not keyed on the camshafts - they sit on a flat surface held in place only by their mushroom shaped bolts which allows infinite adjustment of position.



1. Crank vs. cam position

Timing pin sets the crankshaft position and this plate sits on the camshafts to hold them in the correct position vs the cylinders.

2. Crank vs. cam sprocket position

Timing belt is then tensioned with the left pulley adjusting until its arrow indicator is in the right place., sprockets are loose from the cam, this sets the cam sprockets relative to the  crank shaft.

3. Sprockets locked to camshafts

Then the cam sprockets are tightened locking them to the camshafts. The camshaft plate at the back is removed for tightening and replaced once done as a double check. The engine then turned by hand one cycle, two rotations and tensions/alignments double checked.

That should be it - timing set.

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