Johnson Motors Service Promotion factory letterhead
SERVICE PROMOTION BULLETIN #328
SUBJECT: #519 ZIRC RAM TOOL
Original factory figure

Shown (Figure #1) is the #519 Zirc Ram Tool, which w clear plugged or corroded grease fittings. This too is not a grease gun, and clearing of the fitting is accomplished by hydraulic pressure.

As mentioned above, the Zirc Ram Tool performs its function by hydraulic pressure. Therefore, the tool is filled with any light weight motor oil as shown in (figure #2). Simply dip the tip of the tool in oil and withdraw the plunger. (Do not use grease) Hold the tool in a upright ‘position so the oil does not escape.

Place the tool firmly against the fitting (Figure # and strike the plunger only ONCE with a heavy hammer (Note: It may be necessary to re-fill the tool and strike again to completely clear the fitting; after the fitting is free, lubricate with OMC Type tAt lubricant, using your regular grease gun.) We stress striking the plunger only once to avoid a metal to metal contact between the fitting and hammer. (To avoid bottoming of the ram, we would further suggest, a rubber grommet be placed around the ram shaft.) Care also should be taken to be sure the tool is properly centered to avoid a side force on the fitting. Loosening of the fitting might result if the tool is improperly used.

The #519 Zirc Ram Tool is nominally priced — available from the Owatonna Tool Company, Owatonna, Minnesota.

DO NOT SEND ORDER TO JOHNSON MOTORS

JOHNSON MOTORSOriginal Jack Penland handwritten signatureJack Penland
Service Promotion Manager

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