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Old 05-28-2008, 06:13 PM
HUD HUD is offline
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Join Date: Feb 2003
Posts: 27
1987 300td Automatic Transmission

Is The Automatic Trans Adjustable? I Have A Slight Slippage In Fourth Gear Only. Eng # 603.960

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Old 05-28-2008, 10:17 PM
sixto's Avatar
smoke gets in your eyes
 
Join Date: Jun 2000
Location: Eastern TN
Posts: 20,841
You can try to give the modulator on the side of the transmission a click or two to see if that helps. I forget if CW or CCW tightens shifts. There's a disk about 2" across just aft of the driver side of the bell housing. In the center is a rubber cap about 1/2" across. Remove the cap to expose a plastic bar sitting across low points in the exposed minaret (well, what would you call it?). Pull the bar (it's actually the top of a T) out just enough to clear the minaret. Move it one position then push it back into the minaret. Replace the rubber cap and go for a drive. I wouldn't move it more than a half turn total. If it needs more than that... the tranny needs more than an adjustment.

The proper way to set the modulator is with pressure gauges and a bigger brain than I have.

This will buy a little to a lot more time but start saving pennies towards a rebuild.

Sixto
87 300D

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