Re: Dad's 5677A

Posted by HH56 On 2021/1/5 10:12:25

The hose that is wrapped around the heater should be a molded piece that goes in a straight line from the hot water outlet on the back of the R head thru a space between the heater box and air duct tube next to the firewall and into the smaller curved tube on the valve. A straight length of ordinary hose then connects the other valve tube and with a gentle curve goes into the side heater tube. The front heater tube then connects to another length of hose to either go to an optional underseat heater or to the return port on the water manifold.

Here is a modern hose the late Randy Berger found at the parts stores that can be cut to fit and will duplicate the molded hose. Some drawings from the parts book and a service article show the routing.

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