Applicable to 114 115 116 123 and 126 Chassis, years and models listed above. Troubleshooting an annoying shift problem must first start with the vacuum modulator. This vacuum control unit mounted on the side of the transmission must be tested and adjusted to specs BEFORE you move on to other adjustments. Unfortunately this can not be done by guess or by feel.
Product Details
Now fully assembled and ready to use:
Related Products:
1981 to 1995 722.3 722.4 Modulation Pressure Test Kit
Too much pressure and you will blow the seals. Too little pressure and you will wear out the clutch packs. Now in stock. When installing a new vacuum modulator on your transmission, you most likely will need to adjust it. There are two ways to do this.
Adjusting the Modulator with Kent's New Speed Adjuster - On Demand Video
Out of years of frustration trying to adjust the modulator during a test drive, Kent came up with a better and faster way to make adjustments by just "reaching" under the car. This little device replaces the plastic cap during testing and adjustment.