Outback VDC Wagon AWD F6-3.0L (2002)
Mainshaft: Description and Operation
Reverse Check Mechanism
Reverse Check Mechanism
Located in the transfer case, the reverse check mechanism prevents a direct 5th-to-reverse shift by using a selector arm and cam combination which
allows the gear to be shifted into the reverse only after it has been returned once into the neutral.
CONSTRUCTION
The construction of the reverse check mechanism is as shown in the drawing.
The reverse check sleeve is bolted to the transfer case and houses the mechanism's main components.
The reverse accent shaft is slidable inside the reverse check sleeve and its smaller-diameter end is fitted with the reverse check cam. The cam is
rotatable and axially movable on the shaft but its leftward movement is restricted by a step formed on the sleeve's inner wall.
The reverse accent shaft has hollows in both ends. In the left end hollow are the 1st return spring and its cap and in the right end hollow is the reverse
return spring, which pushes the shaft leftward.
Around the check cam is the reverse check spring whose left end applies simultaneous leftward and rotational forces to the cam.
Both the reverse check spring and reverse return spring are retained at their right ends by the reverse check plate, which is held in place by the snap
ring.
The reverse accent shaft has a V-groove in which the detent ball is pressed by the reverse accent spring fitted through the hole in the reverse check
sleeve.
The reverse check sleeve and reverse accent shaft have a slot and a notch at their bottoms, respectively, and the selector arm is inserted in the notch
through the slot.
OPERATION