Adjusting Oil Feed Pump

Standard factory setting of maximum pressure adjusting screw is as follows:

1940 OJi.V. Model: (To identify item (14), refer to Illus. 56). End of adjusting screw (14) 3/e" from outer end of valve chamber. Average maximum oil pressure at this setting is about 15 lbs.

1941 to 1947 OJH.V. Models: (To identify item (14), refer to Illus. 56). End of adjusting screw (14) %" from outer end of valve chamber. Average maximum oil pressure at this setting is about 30 lbs.

1940 and earlier Side Valve Models: (To identify item (2), refer to Illus. 57.) Adjusting screw (2), nine full turns open. Turn adjusting screw all the way down until it bottoms lightly against valve. Don't force it. Then back up screw nine full turns. Average maximum oil pressure at this setting is about 20 lbs.

1941 to 1947 Side Valve Models: (To identify item (2), refer to Illus. 57). End of adjusting screw (2) %" below top of pump body. Average maximum oil pressure at this setting is about 35 lbs.

All Models: Turning adjusting screw to right increases oil pressure; turning adjusting screw to left decreases oil pressure.

Note: Maximum oil pressure varies considerably with hot or cold oil.

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