TE Connectivity 843996-3 Content: 1 pc(s) 843996-3 Hoja De Datos

2 of 4

Rev E

Reasons for revision of this document can be found in 

Section 6, REVISION SUMMARY.

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).

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.

 (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.

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.

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.