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Home >> Mercedes Benz >> 1993 >> 300D >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Servicing - A/T >> Adjustments >> Shift Point Retard Unit

Shift Point Retard Unit

NOTE: Not all vehicles are equipped with shift point retard.
  1. If shift point retard unit is being replaced, ensure distances "A" and "B" are transferred to replacement unit. See Fig 1 . To check shift point retard, drive vehicle in "D" range with light throttle pressure from a stop.
  2. If shift point retard is functioning properly, vehicle will start moving in second gear and 2-3 shift will occur above 30 MPH. If vehicle starts in first gear, shift point retard is too high. To lower shift point retard, turn adjustment screw to the right. See Fig 1 .
  3. If vehicle 2-3 shift occurs at less than 30 MPH, shift point retard is too low. To raise shift point retard, turn adjustment screw to the left. See Fig 1 .
Fig 1: Identifying Shift Point Retard Adjustment Screw
G94J47828Courtesy of MERCEDES-BENZ OF NORTH AMERICA