Reverse Check Mechanism - Subaru XT 1988 Service Manual

MANUAL TRANSMISSION AND DIFFERENTIAL
3-1
Reverse Check Mechanism
COMPONENT PARTS
(5)
(j)
Fig. 4
CD
@
(1) Neutral position
L3-097
Reverse check sleeve
ASSY
r
CJ)
Reverse check sleeve
(1) Reverse accent shaft
(~ Reverse check cam
(4)
Reverse return spring
(5) Reverse check spring
(6)
Reverse check plate
(j)
Snap ring
(Q)
Reverse accent spring
@
Ball
@
O-ring
(\}) Selector arm
@
Select adjust shim
L3·096
(2) 5th position
L3-098
(3) 5th .... Neutral position (4) Reverse position
L3-099
Section A-A L3-100
Fig. 5
3
®
Position at Fig. 5-(1), (2) and (3)
,@
Position at Fig. 5-(4)
CD
Arrow view "Z"
@
L3-101
Fig.
6
CONSTRUCTION
• The sleeve
CD
is bolted to the transmission case. The shaft
®
is inserted in the sleeve
CD.
On the smaller-diameter
side (right side in Fig. 4) of this shaft
®,
the cam
@
is
loosely mounted so that it can rotate, and the sleeve
CD
holds the cam in place with its stepped part.
The spring
@,
which is inserted in the shaft
®
presses
the shaft to the left. Further, the spring
@
is placed in
between the cam
@
and sleeve
CD,
which forces the cam
@
to the left and in the direction of rotation. Both springs
are held down with the plate
@
that is attached to the
sleeve
CD
with the snap ring
(j) .
The shaft
®
has a groove
for reverse accent, in which the ball
®
and spring
®
are
put through a hole drilled in the sleeve
CD .
OPERATION
• As shown in Fig. 5, the sleeve
CD
and shaft
®
have a
notch, and the arm
@
is placed between the notches.
The position of the arm
@
shown in Fig. 4 is the neutral
position (hereafter referred to as
®
position). The point
where the arm stops when moved to the left is the 1 st and
2nd position. Opposite this, the point where the arm stops
when moved to the right is the 5th and reverse position.
Fig. 5 shows the section A-A in Fig. 4, and Fig. 6 the view
Z in Fig. 4.
1) When 5th and reverse side is selected
The arm
@
pushes the shaft
®
and cam
@
simultaneously
and moves to the 5th and reverse side, as shown in [Fig. 5-
(1 ) ] .
2) When shift is made to 5th
As shown in [Fig. 5-(2)], the arm
@
moves to the 5th side
pushing the shaft
®.
When the arm
@
pulls out of the cam
@,
the cam is returned to the original position by the spring
@.
3) When shift is made from 5th to reverse
As shown in [Fig. 5-(3)], the arm
@
moves to the reverse
side pushing the shaft
®
and runs against the cam
®
that has
already returned. The cam
@
has, as shown in [Fig. 6], a
stopper, which hits against the plate
@'
Thus, the cam
@
can[1ot rotate further. Accordingly, the arm
@
comes to a