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Tolerance on timing belt alignment

Tolerance on timing belt alignment

Old 07-03-2017, 09:21 PM
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Default Tolerance on timing belt alignment

Hi folks,

I have just replaced the timing belt on my 2.7T but am a bit worried that I may be off by a tooth or two. I locked the crank at TDC and held the camshafts in place with a lock bar during the process. After I was done, however, I hand-turned the engine to double-check my work and when I return to TDC the two cam lock tabs are not in a perfect line.

I can put the lock bar back on, but I have to turn the passenger-side cam a degree or two in order to click it into place. Is that uncommon or do I need to pull the belt and try again?

I've attached a picture of the front of the engine before I pulled the pin on the tensioner (yes, I did pull the pin before turning the engine).

What say 'ye?

ReevesL is offline  
Old 02-05-2018, 08:02 AM
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Join Date: Feb 2018
Location: Canada
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If ever unsure of exactly what you describe, with tensioner pin removed rotate crank a few times to settle in the new belt including pre-tension the tensioner, then lock the crank at TDC and pull the two cam gears loose from the cams and with the cam lock bar in place set everything to perfection then lock the cam gears down again. When popping the gears loose from the cams, leave the cam gear bolts and washers in place but backed off a couple turns then use a punch to shock the gear base around the cam and it will pop loose. Of course if going this far then it is an ideal time to replace front cam seals too.
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Old 02-05-2018, 08:12 AM
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