Helm Issues continued

Alz0r

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24 Mar 2009
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thanks for the replies all.

we've just been back onboard and we've narrowed the problem down to the piston arm that is attached to the rudder. It's a beta marine 25 inboard diesel engine by the way, with a "push and pull" steering system, with a cable inside a conduit.

Anyway there is a externally threaded tube in which a piston arm sits. A brass nut at the cable end holds the conduit in place (and with this nut removed, turning the wheel moves the piston back and forth - proving it's not a cable issue or a helm issue?).

We're assuming there's a spring attached to the end of the cable and to the piston arm (inside the threaded tube). There is also a ball which sits on the thread, and inside a clamp (with acts as the pivot / anchor point for the piston). But the piston arm isnt moving freely in and out of the threaded tube. We've hit it with a hammer with no movement, although it WILL rotate slightly and it feels like it's still attached to the spring.

We're stumped! Any thoughts?

Cheers /forums/images/graemlins/smile.gif
 
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