Gm Global Technolgoy Operations, Inc.

Thomas M Gutta

Joel H Gunderson

A standpipe assembly for installation in the fluid sump of a vehicular transmission includes a two-piece fill pipe, a drain nut, a drain plug and a thermal actuator. The fill pipe includes a first tube having a first end secured in a flow passage formed in the drain nut and a second tube having a first end fitted for bi-directional sliding movement on a second end of the first tube. The drain nut is secured within a mounting bore formed through a housing of the transmission. The drain plug is adapted for threaded retention within the flow passage of the drain nut. The thermal actuator is operable for varying the length of the fill pipe by adjusting the position of the second tube relative to the first tube in response to thermal variations.

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Plymouth, MI, United States of America

Thomas M Gutta