3M 3443-112 Assembly instructions

3M™ Locator Plate 3443-112
3M™ Platens 3442-44, 3442-1A
Instructions for the assembly of 3M™ D Sub
Connectors 8250 and 8350
April 2010
78-9101-0518-4-A 
1.0 General
3M manual and pneumatic assembly presses and accessory assembly equipment are recommended for
the termination of 3M™ D Sub Connectors. 3M assembly equipment is offered to help reduce set-up
time, to provide easier and faster assembly and to help reduce assembly error. The 3M Locator Plate
3443-112 and 3M Platen 3442-44 were designed to assemble the D Sub Connector 8250. The Locator
Plate 3443-112 is used with the 3M™ Platen 3443-1A to assemble the D Sub Connector 8350.
Connector Part
Number Locator Plate Number Platen Part Number
3436-1F Shut Height Setting
Assembly Press
Assembly Presses
3640/3316
Assembly Presses
3335/3339-1
8250 *3443-112 3442-44 15 15 1/2 3830
8350 *3443-112 3442-1A 20 20 1/2 3830
*Included with the Locator Plate 3443-112 is a Platen 3442-44. The Platen 3442-44 can also be purchased separately.

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2.0 Procedures for Set Up:
2.1 Adjust the shut height setting (see Figures 2 through 4).
Adjustment
Shaft Mount
Platen Clip
Platen 3442-44
(3442-1A not shown)
Platen to Locator Plate
Alignment Guides
End Guide
Assembly Pocket
Locator Plate 3443-112
Assembly Press Base
Mounting Holes
(4 places)
3M cable types can be assembled to either connector with the Locator Plate 3443-112.
Figure 1: 3M™ Locator Plate 3443-112
3.0 Procedures for Adjusting Shut Height
3.1 The shut height should be adjusted from the base before the locator plate is put into place. The 3M™
Assembly Presses 3316 and 3640 are adjusted with a knob at the top of the press. The 3M™ Assembly
Press 3335 is adjusted with the collar on the press shaft, and the 3M™ Assembly Press 3830 is self-
adjusting.
3.2 The shut height adjustment is made from the
base of the assembly press without the locator
plate or platen in place.
3.3 Place the shut height gauge across the
assembly press base. (See Figures 2 and 3)
Figure 2: Shut Height Adjustment
3.4 Lower the handle of the assembly press until
the handle casting makes contact with the
press casting.
3.5 Rotate the shut height to lower or raise
adjustment feature until the bottom of the
shaft contacts the desired position on the shut
height gauge. (See Figures 3 and 4)
Figure 3: 3M™ Assembly Press 3640

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3.6 Install the 3M™ Locator Plate and the
appropriate platen on the assembly press. The
platen should be positioned parallel with the
connector body and cover.
Note: See the chart on page 1 for shut height
settings.
Figure 4: 3M™ Assembly Press 3335
4.0 Procedures for Adjusting Shut Height
4.1 Grasp a 3M™ D Sub Connector cover strip
between the thumb and forefinger of both
hands, with the liner facing you. Rotate the
outermost cover down against the adjacent
cover on the strip, breaking it from the liner.
Pull laterally away from the strip. Adhesive
should be present on cover. (See Figure 5)
Figure 5
4.2 Firmly press the ribbed side of the cable into
alignment grooves on cover. The adhesive
will help the cable stay in place. Visually
inspect to ensure that:
a. Cable is properly aligned to cover
grooves.
b. Cable end is flush with the cover for end
terminations or perpendicular to cover for
midspan terminations. (See Figure 6)
Figure 6
4.3 Place the cable/cover sub assembly between
the guides on the locator plate, cover side
down. (See Figure 7)
4.4 Position and orient connector body, contacts
down, over the cable/cover sub-assembly,
aligning with the body. (See Figure 7)
Figure 7

4.5 Lower the ASSEMBLY PRESS HANDLE
firmly to complete the Cable/Connector
Assembly. (See Figure 8.)
4.6 Raise the press handle and remove the
completed assembly. Visually inspect to
ensure that:
a. Cover is fully seated and parallel with
the body.
b. Cable is properly aligned with the cover
grooves.
c. Cover retaining devices on the body are
flush with the cover end. Figure 8
Important Notice
PRODUCT USE: All statements, technical information and recommendations contained in this document are based upon tests or
experience that 3M believes are reliable. However, many factors beyond 3M’s control can affect the use and performance of a 3M
product in a particular application, including the conditions under which the product is used and the time and environmental conditions
in which the product is expected to perform. Since these factors are uniquely within the user’s knowledge and control, it is essential
that the user evaluate the 3M product to determine whether it is fi t for a particular purpose and suitable for the user’s application.
Warranty; Limited Remedy; Limited Liability.
3M’s product warranty is stated in its Product Literature available upon request. 3M MAKES NO OTHER WARRANTIES INCLUDING,
BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If this
product is defective within the warranty period stated above, your exclusive remedy shall be, at 3M’s option, to replace or repair the
3M product or refund the purchase price of the 3M product. Except where prohibited by law, 3M will not be liable for any indirect,
special, incidental or consequential loss or damage arising from this 3M product, regardless of the legal theory asserted.

Electronic Solutions Division
Interconnect Products
6801 River Place Blvd.
Austin, TX 78726-9000
800-225-5373
www.3Mconnector.com
Please recycle. Printed in USA.
© 3M 2010
78-9101-0518-4
3M is a trademark of 3M Company.
Customer and Technical Service
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Customer Service: 800-225-5373
Technical Support: 512-984-6703
Outside of the U.S.:
For customer service and technical support, please contact your local 3M Electronic Solutions Division representative.