How to Adjust a KM175 Servo

Automatic transmissions and transaxles are required to smoothly adjust to a wide range of changes in speed and acceleration. When your vehicle is at normal road speed and the accelerator is suddenly pressed hard, a component called the kickdown servo automatically downshifts your transmission to provide a burst of lower-gear acceleration. This is commonly known as "passing gear," since it is frequently used for quick acceleration to pass a slower vehicle. Symptoms of a misadjusted or faulty kickdown servo include spontaneous shifting into lower gear at inappropriate times, failure to downshift as your vehicle slows for a stop and rough, clunking noises during shifting. The Mitsubishi KM175 automatic transaxle kickdown servo, located on the lower left side of the transaxle, is externally adjustable.

Instructions

1

Remove dirt and grime around the kickdown servo switch.

2

Remove the snap ring securing the kickdown servo switch case and remove the case.

3

Loosen the lock nut on the adjustment screw with an end wrench.

4

Use Mitsubishi Tool 09454-33000 to lock the kickdown servo piston so it won't turn.

5

Place a torque wrench on the adjuster and tighten the adjuster to 7.2 foot pounds of torque. Loosen and re-tighten the adjuster two more times then loosen and tighten to 3.6 foot pounds of torque the third time.

6

Loosen the adjuster by two to two and a quarter turns.

7

Tighten the lock nut to 18 to 23 foot pounds of torque.

8

Install a new O-ring in the groove around the kickdown servo switch.

9

Install the kickdown servo switch into the case and install the case on the transaxle, securing it with the snap ring.