408- 9886

PRO- CRIMPER III Hand Crimping Tool Assembly 90574- 1

Rev C

4

of 6

Tyco Electronics Corporation

5. Insert stripped wire into contact insulation and

wire barrels until it is butted against the wire stop,

as shown in Figure 3.

6. Holding the wire in place, squeeze tool handles

together until ratchet releases. Allow tool handles

to open and remove crimped contact.

The crimped contact may stick in the crimping

area, but the contact can be easily removed by

pushing downward on the top of the locator (see

Figure 3).

7. Check the contact’s crimp height as described in

Section 6, CRIMP HEIGHT INSPECTION. If

necessary, adjust the crimp height as described in

Section 7, RATCHET (Crimp Height)

ADJUSTMENT.

6. CRIMP HEIGHT INSPECTION

Crimp height inspection is performed through the use

of a micrometer with a modified anvil, commonly

referred to as a crimp--height comparator. Tyco

Electronics does not manufacture or market

crimp--height comparators. Detailed information on

obtaining and using crimp--height comparators can be

found in instruction sheet 408--7424.

Proceed as follows:

1. Refer to Figure 4 and select a wire (maximum

size) for each crimp section listed.

2. Refer to Section 5, CRIMPING PROCEDURE,

and crimp the contact(s) accordingly.

Position Point

on Center of

Wire Barrel

Opposite

Seam

“A”

Modified Anvil

Wire Size

Crimp Section

Crimp Height

Dimension A and

Wire Size

AWG (Max)

Crimp Section

(Wire Size Marking)

Dimension A and

Tolerance (+)

20

24--20

.978 + .051

[.0385 + .0020]

18

18

1.245 + .051

[.0490 + .0020]

Figure 4

3. Using a crimp height comparator, measure the

wire barrel crimp height as shown in Figure 4. If the

crimp height conforms to that shown in the table,

the tool is considered dimensionally correct. If not,

the tool must be adjusted. Refer to Section 7,

RATCHET (Crimp Height) ADJUSTMENT.

1. Remove the lockscrew from the ratchet

adjustment wheel.

Figure 5

Screwdriver

Ratchet

Adjustment

Wheel

Lockscrew

(Typ)

2. With a screwdriver, adjust the ratchet wheel

from the locator side of the tool.

3. Observe the ratchet adjustment wheel. If a

tighter crimp is required, rotate the adjustment

wheel COUNTERCLOCKWISE to a

higher--numbered setting. If a looser crimp is

required, rotate the adjustment wheel

CLOCKWISE to a lower--numbered setting.

4. Replace the lockscrew.

5. Make a sample crimp and measure the crimp

height. If the dimension is acceptable, replace and

secure the lockscrew. If the dimension is

unacceptable, continue to adjust the ratchet, and

again measure a sample crimp.

8. MAINTENANCE

Ensure that the tool and dies are clean by wiping

them with a clean, soft cloth. Remove any debris with

a clean, soft brush. Do not use objects that could

damage the tool. When not in use, keep handles

closed to prevent objects from becoming lodged in

the crimping dies, and store in a clean, dry area.

NOTE

i