in Figure 1 and Figure 2. The 843477-[ ] tools are used
with contacts having the old style locking lance design
and 843996-2, -3, -4, and -5 tools are used with the
contacts with the new style locking lance design.
Read these instructions thoroughly before attempting
to remove any contacts or resetting the locking lances.
NOTE
All dimensions are in millimeters [followed by
inches in brackets]. Figures and illustrations are for
reference only and are not drawn to scale.
i
TOOLING ASSISTANCE CENTER 1-800-722-1111
PRODUCT INFORMATION 1-800-522-6752
This controlled document is subject to change.
For latest revision and Regional Customer Service,
visit our website at
www.te.com
1
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LOC B
TE Connectivity, TE connectivity (logo), and TE (logo) are trademarks. Other logos, product and/or Company names may be trademarks of their respective owners.
408-9453
AMPMODU*
Mod IV Housing
AMOMODU
MTE Housing
Mod IV
Contact
(Typ)
Locking
Lance
Cavity
Locking
Lance
Cavity
Back of Housing
Locking
Lance
Locking
Lance
Back of Housing
Tandem Spring or Mini
Tandem Spring Contact (Typ
Preloaded
Window
Contact
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.
Figure 2
Reasons for revision of this document can be found in
Section 6, REVISION SUMMARY.
NOTE
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.
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.
i
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
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.
NOTE
The tip of the locking lance will be visible in
housings requiring these tools.
i
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.
Rev
E
2
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408-9453
5. Repeat Steps 1 through 4 for AMPMODU MTE
housings when contact reaches preload window
(see Figure 2).
retention in the housing. Check compatibility of the
contact and tool; then proceed as follows:
1. Orient the reset tip so the taper is facing the
locking lance.
2. Keep the reset tip flat against the receptacle box
and slide it toward the base of the locking lance until
it bottoms.
3. Remove tool tip and contact will be ready for re-
insertion into the housing.
CAUTION
Damaged product should not be used. If a
damaged contact is evident, it should be cut from
the wire and replaced with a new one. If a damaged
!
housing is evident, it should be replaced.
3.2. Extraction Tools 843477-5 and 843996-5
(Figure 3, View B)
Tools 843477-5 and 843996-5 release the locking
lance from the side of the housing cavity.
NOTE
The edge of the locking lance will be visible in
housings requiring this tool.
i
Proceed as follows:
1. Align tool so that wide part of tip is oriented with
long part of lance cavity, and tip taper is opposite
locking lance.
2. Insert tool tip between locking lance and housing
until the tool stop bottoms.
3. Pull back lightly on the wire and, if necessary,
move tool just enough to release the lance.
4. Remove the contact from the housing; then
remove the tool.
5. TOOL INSPECTION/MAINTENANCE
Tools 843477-[ ] and 843996-[ ] should conform to the
dimensions listed in Figure 4. It is recommended that
each tool be inspected upon its arrival to be sure it has
not been damaged in transit and at regularly
scheduled intervals to be sure it remains functional.
6. REVISION SUMMARY
Since the previous release of this sheet, the new
company logo has been applied.
4. LOCKING LANCE RESET PROCEDURE
(FIgure 3, View C)
The tools described on this sheet are designed to
reposition depressed locking lances to ensure
Top Release
Tool
Side Release Tool
Receptacle
Locking
Lance
Tool
Stop
Front of
Housing
Tool
Tip
Flat Side
of Locking
Lance
Tip
Taper
Edge of Locking
Lance
Insert Tip
Here (Back of
Cavity)
View A
Locking Lance
Cavity
Insert Tip
Here (Side of
Cavity)
View B
Tools 843477-5 and
843996-5
ONLY
Figure 3
Lance Reset
Portion
View C
Tools 843477-1, -2 -3, -4 and
Tools 843996-2, -3, -4
Rev
E
3
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408-9453
PART NUMBER
TOOL 843477-[ ]
843477-1
843477-2
843477-3
843477-4
843477-5‡
TOOL 843996-[ ]
---
843996-2
843996-3
843996-4
843996-5‡
A
DIMENSIONS
B
0.46 [.018]
0.76 [.030]
1.02 [.040]
1.27 [.050]
2.79 [.110]
Figure 4
0.81 [.032]
LANCE RESET ANGLE
The lance reset angle for all
843477-[ ] tools is 21°; the lance
reset angle for tools 843996-2,
843996-3, -4, and -5 is 17°.
‡ Tools 843477-5 and 843996-5 have a tapered tip to facilitate side removal contacts.
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