Operation CHARM: Car repair manuals for everyone.

Test 3 - Overdrive Clutch Check

NOTE: This test checks the overdrive clutch hydraulic circuit as well as the shift schedule.

1. Attach gauge to the overdrive clutch tap.

2. Move selector lever to the "circle D" position.

3. Allow vehicle wheels to turn and increase throttle opening to achieve an indicated vehicle speed of 20 mph.

4. Overdrive clutch pressure should read 74 to 95 psi.

5. Move selector lever to the "3" position and increase indicated vehicle speed to 30 mph.

6. The vehicle should be in second gear and overdrive clutch pressure should be less than 5 psi.