Adjusting Bypass Vavle for smooth shifts

jeudi 1 octobre 2015

I'll try to explain and clarify the adjustment of the Bypass Valve to allow for easier shifts. We've all experienced and dealt with our RTVs being stubborn to get out of gear. I believe the '08 and newer models have a double Bypass Valve that is operated by the pull knob on the dash and/or the application of the brakes using the pedal. Older models only have the dash knob, not sure of the years. Older still models don't have either. Someone can clarify the years of those changes??

So the mechanical purpose of the Bypass Valve is to relieve hydraulic pressure from the drive system to allow the shifter to change range selection and/or reverse.

On my '08 model the valve is located just above and rearward from the driver's side (left) rear axle ujoint protruding from the side of the transaxle housing. It has two levers vertically stacked.

The top lever is connected to the dash knob and activated by pulling the knob. This is a simple mechanism and is adjusted by changing the cable adjustment.

The bottom lever is connected to the left rear wheel brake cam lever and activated by applying the brakes using the foot pedal or by activating the park brake lever. This one is much more complicated.

The first picture is taken from just above the left rear tire. It clearly shows the two bypass valve levers. It also shows the top lever being connected to the dash knob cable. And it shows the bottom lever being connected to a spring which goes forward and connects to the brake cam lever with an adjuster.

Attached Images
File Type: jpg 20150929_155346 (1280x720).jpg (46.8 KB)


Adjusting Bypass Vavle for smooth shifts

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