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[Kaptain Jack]

Picked up a bargain, a high lift.The guy admitted that shifter is finicky. Brought it home, the problem is the higher gear doesn't engage, high pitch sound and nothing, lower and second ok. Took the gear box apart, seems to be ok, added grease, tested manually,works fine. Rear axle was a bit stripped, but not much, changed the parts. Same problem: upside down, all is fine shifting and engaging ok, on the floor only low and second, high slips with high pitch motor.
Any ideas?

[EeePee]

Try shifting it by hand? Servo endpoints? Stripped teeth on the piece that engages the gear?

[Kaptain Jack]

Thanks for coming through, on manual shifts ok, I changed the servo to a metal high torque, much better but not perfect. Just real car, switching into third from stop, takes a lot of throttle before it takes off. Not The same as my other High lifts, but at least it moves.