3M 3640 Instructions Manual

3M™ 3640 Assembly Press Instructions

Instructions for the use and adjustment of the 3640 Assembly Press

General

The 3640 Assembly Press has been designed specifically
for the assembly of 3M electronic connectors. All 3M
Locator Plates, Applicators, Platens and Cable Cutters
adapt to the 3640 Assembly Press to assist in the
assembly of a wide variety of connector and harness
assemblies. All of these items are purchased
independently from the 3640 Assembly Press.

The 3640 Assembly Press is a manually operated
portable tool that also can be fastened permanently to a
work station.

Set up requires a Locator Plate which is ordered
separately. Shipped with each locator plate is the
appropriate Shut Height Gauge.

Procedures for Adjusting Shut Height:

Shut height settings are guidelines for proper
termination depth. The adjustment settings are
specified on the chart provided.

1. The shut height adjustment is made from the base of

the assembly press without the locator plate or
platen in place.

2. Lower the handle of the press until the handle

casting makes contact with the press casting. (See
Figure 3)

3. Place the shut height gauge across the press base.
(See Figure 2)

4. 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
Figure 3)

5. Install the locator plate and the appropriate platen

on the press. The platen should be positioned
parallel with the connector body and cover.

Figure 1

Figure 2

Figure 3

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htt://www.3m.com/interconnects/

For technical, sales or ordering information call

800–225–5373

3M™ 3640 Assembly Press Instructions

3771 Base Plate (Optional):

The 3771 Base Plate provides additional stabilization
for the 3640 Assembly Press while maintaining its
portable features. It is available from your 3M
distributor. (See Figure 4)

Maintenance:

The press should be kept clean and lightly oiled
periodically. Use a few drops of S.A.E. 10 oil on the
six pivot points and press shaft at least every 5,000
connections. It is not necessary to disassemble the
press for lubrication.

Shut Height Gauge – Diagram

Shut Height Gauge - Chart

Shut Height G auge

3436-1X

B

C 78-8118-0893-6 1.425 1.450 21 21 1/2

D 78 1. 1

E 78-8118-0904-1 .950 .975 11 1/2

F 78-8118-0905-8 1.150 1.175 15 15 1/2

G 78-8118-0906-6 1.050 1.075 13 13 1 /2

H 78-8118-0907-4 1.275 1.300 17 1/2 18

J 78-8118-0908-2 1.325 1.350 18 1/2 19

K 78-8118-0909-0 .750 .775 7 7 1/2

L 78-8118-0910-8 .800 .825 8 8 1/2

M 78-8118-0911-6 .850 .875 9 9 1/2

N

Part Number

78-8118-0892-8

-8118-0894-4 000 .025 12 12 1/2

78-8118-0912-4

Dim.

"A"

1.250 1.275 17 17 1/2

1.100 1.125 14 14 1/2

Figure 4

Dim .

"B"

"C"

"D"

11

Locator Plates

3443-XX

107N, 87, 91, 110, 100,

101M, 12, 13, 43, 71

106, 58

6, 94, 117, 125, 126

2, 8, 31

112, 118

20

113, 88

63

15, 16, 10, 47

33, 34

19
96

3M Interconnect Solutions

htt://www.3m.com/interconnects/

78-8136-3856-2_A

For technical, sales or ordering information call

800–225–5373