408-9453
2 of 4
Rev E
Figure 2
Reasons for revision of this document can be found in
Section 6, REVISION SUMMARY.
Since Mod IV housings will accept contacts with
both the old style and the new style locking lance,
the selection of the correct tool depends on which
contact is being extracted. Information about the
contacts and housings can be found in Catalog
1307819. Contacts with the old style locking lances
will gradually be phased out.
2. DESCRIPTION
Each tool features a handle marked with the specific
part number, a contact lance release tip, a locking
lance reset portion, and a tool stop. The contact lance
release tip depresses the contact locking lance to
allow extraction of the contact. The tool stop prevents
over-insertion of the tip. The lance reset portion
repositions an overly depressed locking lance to the
proper height - assuring retention of the contact in the
housing.
Generally, all tools except tools 843477-5 and 843996-
5 can be classified as top release tools in that - during
the extraction process - they are inserted into the top
of the housing to depress the locking lance from the
top, as shown in Figure 3, View A. On the other hand,
tools 843477-5 and 843996-5 are called side release
tools. Although they are inserted from the top (see
View B, Figure 3), each side release tool is designed
for a contact which is retained in the housing with its
locking lance lodged into the side of the housing
cavity. Housings of this style are called side release
housings. Note that tools 843477-5 and 843996-5
have a tapered tip to facilitate removal of the contact
(see Figure 3, View B).
3. EXTRACTION PROCEDURE
If extracting Mod IV, Mod IV.v, or Mod V contacts, first
determine whether the contact has an old style or a
new style locking lance. Then select the tool
recommended for your particular contact. Use
Figure 2 when extracting MTE, tandem spring, or mini
tandem spring contacts. When you are sure you have
the correct tool for your particular application, proceed
to Paragraph 3.1 or 3.2.
3.1. Extraction Tools 843477-1, -2, -3, -4 and Tools
843996-2, -3, -4
(Figure 3, View A)
Tools represented in View A of Figure 3 release the
locking lance from the top of the housing cavity as
shown.
The tip of the locking lance will be visible in
housings requiring these tools.
These steps are recommended:
1. Orient the wide part of tip with the narrow part of
locking lance cavity.
2. Insert tool tip into BACK of lance cavity until tool
stop bottoms on housing.
3. Holding tool in position, grip wire and pull contact
out of housing.
4. Remove tool from housing.
AMPMODU*
Mod IV Housing
AMOMODU
MTE Housing
Locking
Lance
Cavity
Mod IV
Contact
(Typ)
Back of Housing
Preloaded
Window
Tandem Spring or Mini
Tandem Spring Contact (Typ
Locking
Lance
Locking
Lance
Contact
Back of Housing
Locking
Lance
Cavity
Note: Contacts shown are typical except the Mini Tandem Spring contacts are used with Mini Tandem spring housings ONLY. Also Mini
Tandem Spring are oriented as shown in Figure 3 View B., before insertion into the housing. Refer to Catalog 1307819 for Mod IV,
Tandem Spring contacts, and Mini Spring contacts.
