Johnson Service Bulletin SB-730 - Generator Kit Installation - RDE-19 through 19C

July 28, 1959. Fuel hose clamp #302647 can contact the generator field stud and cause generator failure; clamp orientation and insulation precautions.

Johnson Motors Service Bulletin letterhead
July 28, 1959
SERVICE BULLETIN NO. SB-730
Subject: GENERATOR KIT INSTALLATION RDE-19 thru 19C
It has been brought to our attention that is is possible for the hose clamp #302647, which clamps the hose from the filter to the carburetor at the carburetor end, to come in contact with the generator.
There are three insulated field studs at the bottom of the generator. The hose clamp at a certain position will make contact with this field stud and the generator case, thereby grounding out the generator field. This, in turn, will cause the generator to burn out in a few hours.
This could happen at any time after installation when the belt is tightened, not necessarily alone at the time of installation. Make certain that clamp is turned so that contact will not take place, it is a good practice to wrap insulating tape around clamp.
JOHNSON MOTORS
Jack Penland Service Department
JP:eb
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Jack Penland