I recently purchased a 1970 GMC truck with a hiab knuckle crane, but I am having trouble getting the outriggers to work. There doesn't seem to be any lines connected to the outriggers, and the controls only have three handles without one specifically for the outriggers. There is a screw valve on top that you can wind out to increase the outrigger's operation, and a pipe plug on the side of the tube. Unfortunately, hiab has not been helpful, and I do not have a manual for the truck. What steps should I take to troubleshoot this issue?
To operate the outrigger, firmly turn the handle in one direction (up, hold, down) and then pull any lever. It is recommended to pull a lever that will fully extend a cylinder.
Answer: - To troubleshoot the outrigger operation issue, you can start by checking for any disconnected or damaged hydraulic lines connected to the outriggers. Ensure that the screw valve on top of the crane is properly adjusted for the outrigger operation. Additionally, inspect the pipe plug on the side of the tube for any blockages or issues.
Answer: - Some older models of Hiab knuckle cranes may not have dedicated controls for the outriggers. In such cases, the outrigger operation may be controlled indirectly through adjustments on the main control handles or valves located on the crane.
Answer: - If Hiab has not been helpful and you do not have a manual for the truck, consider reaching out to specialized crane technicians or mechanics who have experience with vintage GMC trucks and Hiab cranes. They may be able to provide expert advice and assistance in troubleshooting the outrigger problem.
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