molex RHT-4753 User manual

RHT-4753 Hand Crimp Tool
Doc No. 64003-7100 Release Date: 04-20-06 UNCONTROLLED
COPY Page 1 of 7
Revision: A Revision Date: 04-20-06
Hand Crimp Tool
Operating Instruction and Specifications Sheet
Part No. 64003-7100
Eng. No. RHT-4753
(Replaces 19284-0023)
FEATURES
A full cycle ratcheting hand tool ensures complete crimps
Long handles for comfortable crimping with reduced crimping force
A precision user-friendly terminal locator wire stop holds terminals in the proper crimping
position
Insulation crimp adjustment allows a precise insulation crimp.
SCOPE
VibraKrimpFemale Non-Insulated Quick Disconnects, 24-26 AWG
Testing
Mechanical
The tensile test or pull test is a means of evaluating the mechanical properties of the
crimped connections. The following charts show the UL specifications for various wire
sizes. The tensile strength is shown in pounds and indicates the minimum acceptable force
to break or separate the terminal from the conductor.
Wire Size
(AWG)
*UL - 310
24
5
26
3
*UL –310 –Quick Disconnects
The following is a partial list of the product part numbers and their specifications that this tool
is designed to run. We will be adding to this list and an up to date copy is available on
www.molex.com.
Wire Size: 24-26 AWG 0.20-0.12mm²
Terminal No.
Terminal Eng No. (REF)
Wire Strip Length
Insul. Dia. Max.
In.
mm
In.
mm
19018-0044
M-4172
.172
4.37
.095
2.41
19018-0045
M-4172-032
.172
4.37
.095
2.41
19018-0019
M-4179
.172
4.37
.095
2.41
19018-0020
M-4179-032
.172
4.37
.095
2.41

RHT-4753 Hand Crimp Tool
Doc No. 64003-7100 Release Date: 04-20-06 UNCONTROLLED
COPY Page 2 of 7
Revision: A Revision Date: 04-20-06
OPERATION
Open the tool by first closing the jaws sufficiently for the
ratchet mechanism to release.
Crimping Terminals
1. There are 2 Tab Locator Blades supplied with the tool.
One is for .187 and .250 Tabs; the other is for .205 Tabs
and .110 Tabs. Make sure the proper blade is installed
on the top of the locator and the other is stored on the
bottom of the locator.
2. Push the terminal onto the tab locator all the way to the stop in the nest. The barrel of the
terminal should be up. See Figure 1.
3. Partially close the tool to hold the terminal in place. See Figure 2.
4. Insert the properly stripped wire into the terminal barrel. See Figure 2 and 3. Cycle the
tool.
Note: The tamper proof ratchet action will not release the tool until it has been fully
closed.
5. Remove the crimp and inspect for proper crimp location, and check for insulation closure.
Molex offers a Crimp Inspection Handbook for closed barrel industrial product. See our
website or contact your sales engineer.
6. If the insulation part of the crimp needs to be adjusted, first loosen the M4 screw on the
bottom tool jaw, then insert a 3/32 hex wrench (supplied) into the bottom of the lower die.
See Figure 4. A clockwise (CW) rotation decreases insulation crimp while a counter-
clockwise (CCW) rotation increases insulation crimp. After adjusting retighten the M4
screw.
LOCATOR
JAWS
OPEN
TAB
LOCATOR
Figure 1
TERMINA
L
Figure 2
TERMINAL
WIRE
Figure 3
2ND TAB
LOCATOR
WIRE
TERMINA
L
BARREL
INSULATIO
N
PUNCH
CONDUCTOR
ANVIL
TERMINA
L
LOCATO
R
CONDUCTO
R
PUNCH
INSULATION
ANVIL
1ST TAB
LOCATOR

RHT-4753 Hand Crimp Tool
Doc No. 64003-7100 Release Date: 04-20-06 UNCONTROLLED
COPY Page 3 of 7
Revision: A Revision Date: 04-20-06
Maintenance
It is recommended that each operator of
the tool be made aware of, and
responsible for, the following
maintenance steps:
1. Remove dust, moisture and other
contaminants with a clean brush, or
soft, lint-free cloth.
2. Do not use any abrasive materials
that could damage the tool.
3. Make certain all pin, pivot points and
bearing surfaces are protected with a thin coat of high quality machine oil. Do not oil
excessively. The 64003-7100 (RHT-4753) was engineered for durability, but like any fine
piece of equipment it needs cleaning and lubrication for a maximum service life of trouble-
free crimping. A light oil such as 30 weight automotive oil used at the oil points shown in
Figure 4, every 5,000 crimps or 3 months will significantly enhance the tool life and ensure
a stable calibration.
4. When tool is not in use, keep the handles closed to prevent objects from becoming lodged
in the crimping dies, and store the tool in a clean, dry area.
Miscrimps or Jams
Should this tool ever become stuck or jammed in a partially closed position, Do Not force the
handles open or closed. The tool will open easily by pressing the ratchet release lever. See
Figure 5.
How To Adjust Tool Preload (See
Figure 5)
Over the life of the tool, it may be
necessary to adjust tool handle preload
force. Listed below are the steps
required to adjust the crimping force of
the hand tool to obtain proper crimp
conditions:
1. Remove the screw and plastic cover
washer. Note the setting wheel
position.
2. Lift the setting wheel off the axle.
Turn the eccentric axle with a
screwdriver.
3. Turning the eccentric axle counter-clockwise will increase handle force.
4. Replace the setting wheel to the axle, aligning the nearest notch in the setting wheel to the
dowel pin.
5. Replace the plastic cover washer and screw.
Figure 5
PRELOAD
ADJUSTMENT
LOCKING
SCREW
1.00
1.00
PRELOAD
TEST
POINT
PRELOAD
TEST
POINT
RATCHET
RELEASE
LEVER
PUSH UP
Figure 4
LUBRICATION POINTS
(BOTH SIDES) LIGHT
OIL
(EVERY 3 MONTHS
OR 5,000 CRIMPS)
3/32” HEX
WRENCH
LOOSEN
M4 SCREW

RHT-4753 Hand Crimp Tool
Doc No. 64003-7100 Release Date: 04-20-06 UNCONTROLLED
COPY Page 4 of 7
Revision: A Revision Date: 04-20-06
6. Check the crimp specifications after tool crimp force is adjusted.

RHT-4753 Hand Crimp Tool
Doc No. 64003-7100 Release Date: 04-20-06 UNCONTROLLED
COPY Page 5 of 7
Revision: A Revision Date: 04-20-06
Tool Calibration
A Certificate of Calibration (see last page) was
supplied with the tool. To recalibrate this tool, pin
gauge measurements should be taken in each
conductor nest and compared to this chart. The tool
should be lubricated prior to recalibration to ensure
consistent measurements. Handle preload is factory
set to 25-45 LBS. See How to Adjust Tool Preload
(See Figure 5) to recalibrate.
Nest Color Code
Wire Range
“X” Dimension Conductor Crimp
Crimp Inspection Marking
AWG
mm²
Mean
Go
No Go
Red
26-24
0.20-0.12
.042
.039
.050
N/A
CAUTION: Repetitive use of this tool should be avoided.
Warranty
This tool is for electrical terminal crimping purposes only. This tool is made of the best quality
materials. All vital components are long-life tested. All tools are warranted to be free of
manufacturing defects for a period of 30 days. Should such a defect occur, we will repair or
exchange the tool free of charge. This repair or exchange will not be applicable to altered,
misused or damaged tools. This tool is designed for hand use only. Any clamping, fixturing,
or use of handle extensions voids this warranty.
Hand held crimping tools are intended for low volume, prototyping, or repair requirements
only.
CAUTION: Molex crimp specifications are valid only when used with Molex terminals,
applicators and tooling.
PIN GAUGE IN
CONDUCTOR
CRIMP
“ Confining ”
Crimp
X

RHT-4753 Hand Crimp Tool
Doc No. 64003-7100 Release Date: 04-20-06 UNCONTROLLED
COPY Page 6 of 7
Revision: A Revision Date: 04-20-06
Figure 6
M4 X 25 LG
PAN HEAD
SCREW
FOR SPRING
ACCESS
SWING
OPEN COVER
6
SCREW AND
PLASTIC
COVER FOR
HANDTOOL
PRELOAD
ADJUSTMENT
RATCHET
RELEASE
LEVER
3
1
2
M4 X 12LG
PAN HEAD
SCREW
M4 LOCKNUT W/
HEX NYLON
INSERT
M4 FLAT
WASHER
10
7
8
9
5
4
REPAIR KIT. ALL PARTS
REQUIRED FOR
REPAIR. (ONLY MAIN SPRING
SHOWN)
(2)
PARTS LIST
Item
Order No
Description
Quantity
64003-7100
Hand Crimp Tool
(Fig. 6)
1
64000-0076
Repair Kit (Springs, Pins and E-Rings)
1
2
63810-0000
Handle
1
3
64003-1175
Locator Assembly
1
4
64003-7170
Tooling Kit
1
Tooling Kit Only
5
64003-7102
Conductor Punch
1
6
64003-7101
Conductor Anvil
1
7
64003-7104
Insulation Punch
1
8
64003-7103
Insulation Anvil
1
9
N/A
4 mm Dia. by 5.0 mm Lg.Roll Pins
2**
10
N/A
#10-32 by 5/16” Lg. Cup Pt. Set Screw
1**
** The following purchased parts are available from an Industrial supply company such as MSC
(1-800-645-7270).

RHT-4753 Hand Crimp Tool
Doc No. 64003-7100 Release Date: 04-20-06 UNCONTROLLED
COPY Page 7 of 7
Revision: A Revision Date: 04-20-06
Certificate of Calibration
Tool Order Number __________________
Tool Eng. Number ___________________
Tool Revision ___________________
Serial Number ___________________
Date of Manufacture__________________
Handle Load Range at 1 inch from the Tips =______________
Actual =_____________
Pin Gauge of Conductor Nest/Nests or Slug height if the nest is the “F” Crimp style.
Range Conductor Nest # 1 = ____________-- Actual = ______________
Technician______________
Date of Calibration ______________
Calibration should be done every 5,000 cycles or 3 months.
Tools should be lubricated during this operation.
Americas Headquarters
Lisle, Illinois 60532 U.S.A.
1-800-78MOLEX
amerinf[email protected]
Far East North Headquarters
Yamato, Kanagawa, Japan
81-462-65-2324
[email protected]
Far East South Headquarters
Jurong, Singapore
65-6-268-6868
[e-mail]
European Headquarters
Munich, Germany
49-89-413092-0
[email protected]
Corporate Headquarters
2222 Wellington Ct.
Lisle, IL 60532 U.S.A.
630-969-4550
Fax: [phone]
Visit our Web site at http://www.molex.com