1st Speed Only No 1-2 Shift

1. Governor valve sticking.
2. Driven gear in governor assembly loose, worn or damaged.
3. The 1-2 shift valve in control valve assembly stuck closed. Check governor feed channels for blocks, leaks, and position. Also check control valve body gaskets for leaks and damage.
4. Intermediate clutch plug in case may be leaking or blown out.
5. Check for porosity between channels and for blocked governor feed channels in case.
6. Center support oil rings missing, or damaged. Orifice plug missing.
7. Intermediate clutch piston seals missing, incorrectly installed or damaged.