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408-7183

4 of 5

Rev B

2. Close the tool handles until it is evident that the 
jaws have bottomed; then hold in this position. Do 
NOT force the jaws beyond initial contact.

3. Align the GO element with the appropriate 
section of the crimping chamber. Push element 
straight into the crimping chamber without using 
force. The GO element must pass completely 
through the crimping chamber as shown in Figure 4.

4. Align the NO-GO element and try to insert it 
straight into the same section of the crimping 
chamber. The NO-GO element may start entry, but 
must not pass completely through the crimping 
chamber. See Figure 4. 

WIRE

SIZE

CONTACT

NUMBER

CRIMPING

TOOL

GAGE DIM (DIA)

GO

NO GO

16

66211

90117

1.49 

[.0585]

1.61 

[.0635]

Figure 4

5.5. Ratchet Inspection

The ratchet control feature on this hand tool should be 
checked to ensure that the ratchet does not release 
prematurely, allowing the jaws to open before they 
have fully bottomed. Obtain a 0.025-mm [.001-in.] 
shim that is suitable for checking the clearance 
between the bottoming surfaces of the crimping jaws. 
Proceed as follows:

1. Select the maximum size wire for the tool and a 
contact.

2. Position the contact and wire between the 
crimping jaws, as described in Section 3, 
CRIMPING PROCEDURE. 

3. Hold the wire in place and squeeze the handles 
until the ratchet releases. Hold the handles in this 
position, maintaining just enough tension to keep 
the jaws closed.

4. Check the clearance between the bottoming 
surfaces of the crimping jaws. If the clearance is 
0.025-mm [.001-in.] or less, the ratchet is 
satisfactory. If clearance exceeds 0.025-mm [.001-
in.], the ratchet is out of adjustment and must be 
repaired. See Section 6, REPLACEMENT AND 
REPAIR.

6. REPLACEMENT AND REPAIR

Replaceable parts are listed in Figure 5. Parts other 
than those listed in Figure 5 should be replaced by TE 
to ensure quality and reliability of the tool. Order 
replacement parts through your TE representative, or 
call 1-800-526-5142, or send a facsimile of your 
purchase order to 1-717-986-7605, or write to:

CUSTOMER SERVICE (038-035)

TYCO ELECTRONICS CORPORATION

PO BOX 3608

HARRISBURG PA 17105-3608

For customer repair service, call 1-800-526-5136.

7. REVISION SUMMARY

Revisions to this instruction sheet include:

Changed company name and logo

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