Godwin Hydra-Max Hydraulic System

Service bulletin E-106A

Memo from: Godwin MFG

    We have had several calls from the field in reference to possible defective hydraulic oil temperature switches.  Thus far, we have exchanged under warranty many switches.  After extensive testing of the returned switches, we find less than 5% defective.  After discussing the symptoms with technicians in the field, we conclude that the spreader system may accidentally be turned on with out a spreader attached, Or that a hydraulic component builds heat momentarily in the system. If this occurs the return line that houses the temperature switch gets hot, thus making the system very sensitive to a hot oil condition.  This could be generated in as little as 2 minutes.

    The temperature switch on the Kodiak trucks can be relocated to the filter base by adding another "Tee" in the line as shown below. By doing this, the oil in the whole system would have to heat up before shutdown occurs.

 Special note:   When relocating the temperature switch, be sure that the return oil passes by it by installing the switch next to the filter inlet NOT at the end beyond the hose connections.

 Under normal operations the hydraulic oil temperature should be 87 to 140 degrees.  If the oil gets up to 180 degrees, the temperature switch will shutdown the system until it cools down and automatically resets. If this occurs the hydraulic system, spreader, plow, quick disconnects, etc., should be thoroughly checked to see where the problem area is.

Return to Div.1 Equipment home page

maintained by:

Adam Evans