Chapter C
Chapter C
Maintenance Mode
144
W301-0411E
Double Lock Ratchet
1. A double lock ratchet is used to reinforce contact
support. The insulation barrel is supported at the
retainer type double lock area. See Fig.4.
2. If contacts are not mounted correctly inside the
housing, double lock may not completely lock or
effectively lock. See Figs.2 and 6.
3. Verify that the double lock is firmly locked. When
completing and verifying steps 1 and 2 above,
press the retainer press area. The retainer moves
downward and the ratchet clicks to be released.
Make sure it is locked by lightly pulling the wire
outward. The conditions shown in Figs.4 and 5 will
be seen if the retainer behaves correctly.
If any contacts are not completely fixed, the
retainer does not work properly resulting in the
condition shown in Fig.6, in which the retainer is
effective only on one side and the ratchet teeth
are lifted on one side. If this happens, remount the
contact in the correct position using a removing
jig.
Unlocking the double lock ratchet
Unlock the detent lock
1. Insert the jig into the insertion slot.
2. Release the ratchet teeth by turning the jig in the
direction of the arrow so that the housing wall
bends to allow you to lift the retainer press area
upward. Repeat the same procedure for the other
side as well.
