Tranny clanking

Mightychan

Member
Oct 8, 2016
157
Panama City FL
Boat Info
2005 DA 420, AB Dink
Engines
Cummins 6CTA
Hi all, I just noticed the other day that I am getting a clunk clunk clunk sound from my starboard transmission. I get the noise in forward or reverse, but nothing in neutral. No strange vibrations, just a noise. What should I be looking at as a cause of this? 2004 320, gas 350s with v drives, 350 hours. Thanks!
 
Did you check fluid level and what the fluid looks like.
I remember one time I had that issue at low rpms, the dip stick wasn't locked down tight.
 
Fluid level and condition.prop shaft coupling hardware for looseness
 
I'm not sure if it's the same with your boat but I had alot of noise from my tranny's due to carburetor issues on my 454's. Once they were rebuilt, the noise was gone.
 
I had a similar issue... ended up being a slight miss in my starboard engine. Changing the plugs made the noise go away.
 
You have a 13 year old low hour boat. It could be an engine miss or worn springs in the damper plate. Make sure the engine is firing on all 8 cylinders before blaming the damper plate.
 
+1 on changing plugs. when plugs get soiled the rpm drops and the shifting can make clicking sound. Mike
 

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