Kal Quaife Posted May 4 Share Posted May 4 RNZAF C130H keeps shearing towbar pins. We found that the NWS steering indicator feed back drive chain in upper indicator dial had stiff links and stuck during travel and we thought that this was not allowing steering valve teeter totter arm to cycle whilst towing and causing a lock thus shearing towbar pins. We lubed chain and it appeared to fix problem but now the shearing has reoccured. Has anyone had this problem. We have not changed valve. It naturally does not do it with arm disconnected. NWS rigging i.e cable tension correct and even and teeter totter arm correct. The NWS operates as required when on skid plates. Cheers Kal Quote Link to comment Share on other sites More sharing options...
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