ZF220A knocking noise

[Antonio Guzzo R.]

Hello!

After rebuilding a 6bta5.9 330 I noticed that the ZF220A gear is making a knocking noise when in forward or reverse at idle speed but it dissipates when the engine a little over idle speed (about 900/1000 rpm). No noise in neutral at any RPM. The noise seems to come from the forward side of the gear, almost from the bellhousing.

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[Tony Athens]

Difference?

Gear rattle vs. non or very little gear rattle

[Antonio Guzzo R.]

Thank you Tony!

In your experience, wich is the differece between the old spring/metal and the vulkan/rubber torsional coupling?

[Tony Athens]

You torsional coupling that connects the engine to the gear in failing.. Plenty has be posted about this over the years as to this issue here and on other forums

1 user thanked author for this post.

Antonio Guzzo R.

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