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1,539 Posts
Milano/75 3.0 V6
New timing belt, with mechanical tensioner replacing hydraulic.
Belt is walking forwards on the pulleys until it touches the crank timing wheel and plastic belt cover.
Didn’t do it before, no other mechanical changes.
A bit of research points to too much tension on belt (I reduced tension, no change), or an alignment problem.
The new tensioner is flat against the block, and itself seems solid.
Only remaining suspect item is the oil pump/distributor drive pulley, which rocks just a fraction, but visibly, tho why this would be having an effect now, and not before, I don’t know.
I’ve not seen a diagram of these pulleys, Or where any bearing actually sits, to see how they are put together. Bearings or rebuild kits don’t seem to be listed by the usual suppliers....what’s the story with these?
Any pointers or suggestions welcomed.
And yes, I do need a comprehensive repair manual.
New timing belt, with mechanical tensioner replacing hydraulic.
Belt is walking forwards on the pulleys until it touches the crank timing wheel and plastic belt cover.
Didn’t do it before, no other mechanical changes.
A bit of research points to too much tension on belt (I reduced tension, no change), or an alignment problem.
The new tensioner is flat against the block, and itself seems solid.
Only remaining suspect item is the oil pump/distributor drive pulley, which rocks just a fraction, but visibly, tho why this would be having an effect now, and not before, I don’t know.
I’ve not seen a diagram of these pulleys, Or where any bearing actually sits, to see how they are put together. Bearings or rebuild kits don’t seem to be listed by the usual suppliers....what’s the story with these?
Any pointers or suggestions welcomed.
And yes, I do need a comprehensive repair manual.