No Engine Braking In 3RD Gear

1. Control valve assembly and spacer plate.

a. Manual linkage improperly adjusted.

b. D-3 orifice in spacer plate clogged.

c. Valve body gaskets damaged, leaking or improperly installed.

d. PT/D-3 check ball 3 improperly positioned or missing.

2. Turbine shaft and overrun clutch.

a. D-3 oil passage clogged or undrilled in turbine shaft.

b. D3 oil hole not drilled through in overrun clutch hub.

c. Overrun clutches burned.

d. Overrun clutch backing plate snap ring out of groove.

e. Oil seals damaged or missing in clutch piston.

9. Overrun clutch backing plate snap ring out of groove.