TE Connectivity 2031991-1 User manual

Instruction Sheet
1 of 8
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PRODUCT INFORMATION 1-800-522-6752
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408-10216
24 OCT 2022 Rev B
PROPER USE GUIDELINES
Cumulative trauma disorders can result from the prolonged use of manually powered hand tools. Hand tools are intended for occasional
use and low-volume applications. A wide selection of powered application equipment is available for extended-use production operations.
The SDE-SA hand tool is a commercial-grade tool. Product crimped with this tool meets the wire barrel crimp height requirement for hand
tools in the appropriate 114 application specification but might not comply with other feature parameters of the specification.
Figure 1: SDE-SA Commercial Hand Tool Assembly 2031991-1 with Die Assembly 2031991-2
1
Die set 2031991-2
6
Nut
11
Handle
2
Wire crimper (upper die)
7
Locator assembly
12
Die-retaining screws (2)
3
Insulation crimper (upper die)
8
Stationary jaw
13
Die-retaining spring pins (4)
4
Wire anvil (lower die)
9
Moving jaw
5
Insulation anvil (lower die)
10
Ratchet adjustment wheel
SDE-SA Commercial Hand Tool Assembly
PN 2031991-1 with
Die Assembly PN 2031991-2

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1. INTRODUCTION
SDE Crimp Commercial Hand Tool Assembly 2031991-1 for the JUNIOR POWER TIMER contacts is the tool
and die set shown in Figure 1. The tool consists of the SDE Crimp Frame Assembly 2362810-1 (instruction
sheet 408-35143) and the die assembly listed in Figure 1. This tool is used to crimp the terminal part numbers
listed in Table 1.
Table 1: Crimping specifications
Crimp tooling
Terminal P/N
Cable
Wire insulation mm
SDE-SA tool
Die assembly
only
Wire size
mm2
Number of
conductors
Diameter
Strip length
2031991-1
2031991-2
929929
929938
927766
963979
929937
1.5-2.5
1
2.2-30
5.2±0.3
929930
929940
927770
963978
929939
0.5-1.0
1.4-2.1
4.7±0.3
929931
929942
927772
963977
929941
0.2-0.5
1.2-1.6
4.2±0.3
927776
927774
963972
1.0-1.6
3.5±0.3
NOTE
Dimensions in this instruction sheet are in millimeters with [inches in brackets]. Figures are for reference only and are not
drawn to scale.
Read these instructions thoroughly before crimping connectors.
2. DESCRIPTION
The tool frame features two jaws, a handle, and a ratchet adjustment wheel. The die set consists of a crimper
(upper die) and an anvil (lower die). The tool frame holds a die assembly with four crimping chambers (see
Figure 1). Die-retaining spring pins and screws are used to secure the dies in the tool frame.
The tool features a ratchet and an adjustment wheel with a range of settings. The ratchet ensures that the tool
has completed the cycle and does not release until the handles have been fully closed. The adjustment wheel
controls the amount of handle pressure exerted on the dies during the crimping procedure.
CAUTION
The dies bottom before the ratchet releases. This feature ensures maximum tensile performance of the crimp. Do not re-
adjust the ratchet unless you have verified that the crimp height is incorrect (see section 8, ADJUSTING THE RATCHET).

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3. INSTALLING THE DIE SET AND LOCATOR ASSEMBLY
1. Open the tool handles.
2. Remove the two die-retaining screws from the tool jaws (see Figure 1).
3. Insert the wire and insulation anvils in the moving jaw of the tool frame with their chamfered sides and
the marked surfaces facing outward.
4. Insert two die-retaining spring pins.
5. Insert the short die-retaining screw through the jaw and through the anvil dies. Tighten the screw just
enough to hold the dies in place. Do not tighten the screw completely.
6. Insert the wire and insulation crimpers in the stationary jaw of the tool frame with their chamfered sides
and the marked surfaces facing outward.
7. Insert the other two die-retaining spring pins.
8. Insert the long die-retaining screw through the jaw and through the crimper dies. Tighten the screw just
enough to hold the dies in place. Do not tighten the screw completely.
9. Carefully close the tool handles, making sure the anvil and crimper align properly. Continue closing the
tool handles until the ratchet in the tool frame has engaged sufficiently to hold the dies in place.
10. Tighten both die-retaining screws.
11. Place the locator assembly over the end of the long screw and position the locator assembly against
the side of the tool jaw.
12. Place the nut onto the end of the long screw and tighten the nut enough to hold the locator assembly in
place.
4. REMOVING THE DIE SET AND LOCATOR ASSEMBLY
1. Close the tool handles until the ratchet releases.
2. Remove the nut, the locator assembly, the two die-retaining screws, and the four die-retaining spring
pins.
3. Slide the dies out of the tool jaws.
NOTE
The ratchet release has detents with audible clicks as the handles are closed. The ratchet releases on the sixth click.

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5. CRIMPING
NOTE
The tool is provided with a crimp adjustment feature. Initially, the crimp height should be verified as specified in Figure 4. Refer
to section 7, INSPECTING THE CRIMP HEIGHT, and section 8, ADJUSTING THE RATCHET, to verify crimp height before
using the tool.
1. Select a wire of the correct size and insulation diameter for the terminal (see Table 1).
2. Strip the wire to the length listed in Table 1. Do not nick or cut wire strands.
3. Select an applicable contact and identify the appropriate crimp section according to the wire size
markings on the tool.
4. Hold the tool so that the back (wire side) is facing you. (See Figure 2.) Squeeze the tool handles
together and allow them to open fully.
5. While holding the contact by the mating end, insert the contact through the front of the tool and into the
appropriate crimp section.
6. Position the contact so that the U of the wire barrel faces the top of the tool.
7. Insert the contact up into the nest so that the wire barrel is against the spring-loaded locator.
CAUTION
Make sure that both sides of the wire barrel are started evenly into the crimping section. Do not attempt to crimp an
improperly positioned contact.
8. Close the handles of the tool until the contact is lightly held by the die set, but is not deformed to the
point where the wire cannot enter freely.
9. Insert the wire into the crimp barrel of the contact until it butts against the spring-loaded locator.
10. While holding the wire in place, fully cycle the tool until the ratchet releases and allows the handle to
open.
Figure 2: Crimping
1
Die assembly (for reference only)
5
Locator in wire stop slot
2
Locator
6
Contact (typical)
3
Back of tool (wire side)
7
Strip length
4
Wire
8
Wire inserted to stop

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6. ADJUSTING THE CONTACT SUPPORT
The contact support is preset prior to shipment, but minor adjustments might be necessary. Refer to Figure 3
and proceed as follows:
1. Make a sample crimp and determine whether the contact is straight, bending upward, or bending
downward.
2. If adjustment is required, loosen the screw that holds the contact support onto the locator assembly.
3. Insert a contact with wire into the proper nest and close the handles until the ratchet reaches the sixth
click, or until the contact support touches the contact.
4. Move the contact support as required to eliminate the bending of the contact.
5. Tighten the screw and close the handles until the ratchet releases.
6. Remove and inspect the contact.
7. Make another sample crimp. If the contact is still bent during crimping, repeat the adjustment
procedure.
Figure 3: Contact support adjustment
1
Contact support
2
Contact support screw
3
Die assembly (for reference only)

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7. INSPECTING THE CRIMP HEIGHT
Crimp height inspection is performed using a micrometer with a modified anvil, commonly referred to as a
crimp-height comparator. TE Connectivity 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.
1. Refer to Table 1 and select a wire (maximum size) for each crimp section listed.
2. Refer to section 5, CRIMPING, and crimp the contacts accordingly.
3. Using a crimp height comparator, measure the wire barrel crimp height listed in Table 2.
If the crimp height conforms to that shown in the table, the tool is considered dimensionally correct.
If not, adjust the tool. Refer to section 8, ADJUSTING THE RATCHET.
CAUTION
Do not use damaged product. If a damaged contact is evident, replace it. Do not re-terminate contacts.
Figure 4: Crimp height
1
Modified anvil
2
Position point on center of wire barrel opposite seam
3
Crimp height (see Table 2)
Table 2: Crimp height specifications
Die assembly
Wire size max
mm2
Crimp section
(wire size markings)
Crimp height mm
2031991-2
2.5
1.50-2.50
1.56±0.05
1.0
0.50-1.00
1.23±0.05
0.5
0.20-0.50
1.03±0.05
0.5
0.20-0.50
1.03±0.05

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8. ADJUSTING THE RATCHET
The ratchet is preset prior to shipment, but it is important to verify the crimp height using a micrometer or
caliper. Use and wear can cause the tool to go out of adjustment. Inspect the crimp height and adjust the
ratchet, if necessary, on a regular basis.
To adjust the ratchet, complete the following steps.
1. Remove the ratchet wheel lock screw (Figure 5).
2. Rotate the adjustment wheel.
If the crimp height is larger than recommended, rotate the adjustment wheel counter-clockwise ()
to a higher setting.
If the crimp height is smaller than recommended, rotate the adjustment wheel clockwise (–) to a
lower setting.
3. Reinstall the lock screw.
4. Make a sample crimp and measure the crimp height.
5. Repeat as required.
If the crimp height cannot be made to conform to the recommended crimp height, replace the tool or die
set. See section 10, REPLACEMENT AND REPAIR.
Figure 5: Ratchet adjustment
1
Lock screw
2
Ratchet adjustment wheel

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9. MAINTENANCE AND INSPECTION
9.1. Maintenance
Remove dust, moisture, and other contaminants with a clean, soft brush or soft, lint-free cloth. Do not
use objects that could damage the dies or tool.
When the tool is not in use, keep the handles closed to prevent objects from becoming lodged in the
dies.
Remove all lubrication and accumulated film by immersing the dies in a suitable commercial degreaser.
Store the tool in a clean, dry area.
9.2. Visual inspection
Inspect the tool and dies on a regular basis to ensure that they are not worn or damaged.
Make sure that the die retaining screws are properly secured.
Inspect the crimping chambers of the die assembly for flattened, chipped, worn, or broken areas.
If damage or abnormal wear is evident, replace the tool or dies. Refer to section 10, REPLACEMENT
AND REPAIR.
10. REPLACEMENT AND REPAIR
If the dies are damaged or worn excessively, they must be replaced. Order replacement dies through your TE
representative. You can also order parts by any of the following methods:
Go to TE.com and click the Shop TE link at the top of the page.
Call 800-522-6752.
Write to:
CUSTOMER SERVICE (038-035)
TE CONNECTIVITY CORPORATION
PO BOX 3608
HARRISBURG PA 17105-3608
For customer repair services, call 800-522-6752.
11. REVISION SUMMARY
Revisions to this instruction sheet include:
Updated part number and instruction sheet for tool frame
Reformatted to match current standard for instruction sheets