TE Connectivity 1752786-1 User manual

Instruction Sheet
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PRODUCT INFORMATION 1-800-522-6752
This controlled document is subject to change.
For latest revision and Regional Customer Service,
visit our website at www.te.com.
408-8958
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Figure 1
1. INTRODUCTION
This instruction sheet covers application, inspection and maintenance procedures for Hydraulic Crimping Head
PN 1752786-1 shown in Figure 1.
The crimping head accepts interchangeable die sets for a variety of terminals and splices for large wire sizes -
4/0 through 1000 MCM range. Refer to the instructions packaged with the specific die sets for compatible
products, wire ranges, strip dimensions, and application procedures.
This crimping head is designed for use with Foot Hydraulic Pump PN 1583659-1, Hand Hydraulic Pump PN
1583661-1, or Electric Hydraulic Pumps; PN 1804700-1 (115 VAC) and PN 1804700-2 (220 VAC).
Warning: To avoid personal injury and potential damage to the crimp head, TE Connectivity (TE) requires the
crimp head to operate at 9,800 to 10,200 PSI [676 to 703 bar]. TE recommends using 10,000 PSI [689 bar] TE
Hydraulic Pumps as other manufacturers’ pumps may apply insufficient pressure (resulting in an inadequate
crimp) or excessive pressure (resulting in failure of the head). Additionally, the TE pump must be used to
maintain CE certification; if using other manufacturers’ pumps, the user is responsible for self-certification.
Read these instructions, and all applicable references before inserting any die set assemblies and crimping any
terminals or splices.
NOTE
Dimensions in this instruction sheet are in millimeters [with inches in brackets]. Illustrations and figures are for reference only
and are not drawn to scale.
Reasons for reissue of this Instruction Sheet are provided in Section 9; REVISION SUMMARY
Hydraulic Crimping
Head, PN 1752786-1
ORIGINAL INSTRUCTIONS

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2. DESCRIPTION
Main components of this crimping head include a “C”-Head, which houses the stationary die, a cylinder which
contains the hydraulic chamber, a piston (ram) which holds and controls the moving die, and a quick-
disconnect coupling (cylinder half) which mates with the coupling on the hose to release or supply pressure. A
dust cap covers the quick-disconnect coupling.
3. CRIMPING HEAD INSTALLATION
DANGER
Verify that the hydraulic pressure to hose or handle control is released and that power supply is disconnected from electric
power unit, if applicable.
CAUTION
Prior to installing the head, verify that the pump and hose being used are working properly, and are adjusted to and rated at
68948 kPa [10,000 psi]. An incorrectly adjusted or rated pump/hose could result in severe tooling damage, as well as
personal injury.
1. Remove protective dust caps from both quick connect/disconnect couplers.
2. Thoroughly clean the coupling on the pump/hose and the coupling on the crimping head.
3. Mate both quick-disconnect couplers and tighten the collar of the coupler assembly on the crimping
head (see Figure 1).
CAUTION
Oil flow must be unobstructed between power unit and crimping head. Verify that all couplers are fully mated and tightened.
NOTE
If crimping head must be removed after being in production, pressure must be released in the hydraulic system before head is
removed. If using Electric Hydraulic Power Unit 1804700-1 or 2, disconnect power unit from power supply. When using
Hydraulic Foot Pump PN 1583659-1 or Hydraulic Hand Pump PN 1583661-1, depress the pressure release pedal to release
pressure.
4. DIE INSTALLATION AND REMOVAL (FIGURE 2)
DANGER
To avoid personal injury, avoid accidently depressing foot switch or handle control of power unit when changing dies.
CAUTION
Operating the crimping head WITHOUT the dies installed will damage the “C”-Head or ram.
Installation
1. Back out the set screws in the crimping head and ram (the ram must be raised slightly to gain access
to the set screw).
2. Insert the dies into the crimping head and the ram, ensuring the “flats”of the die shanks are facing the
set screws. Tighten the set screws.
3. Activate the power unit and slowly close the dies to verify proper alignment.
4. Complete the cycle and allow the ram to return to the “DOWN” position.
Removal
DANGER
To avoid personal injury, avoid accidently depressing foot switch or handle control of power unit when changing dies.
CAUTION
Operating the crimping head WITHOUT the dies installed will damage the “C”-Head or ram.
1. Back out the set screw in the crimping head and remove the stationary die.
2. Raise the ram enough to expose the set screw and back it out until the moving die can be removed.

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Figure 2
5. CRIMPING PROCEDURE
The following procedure provides only general information concerning crimping. Refer to instructional material
packaged with the dies and power unit for more detailed information including wire stripping dimensions and
how to position terminals or splices in the dies.
CAUTION
Never operate the power unit without having a crimping head attached to the handle control or crimping head coupling.
1. Insert a terminal or splice in the stationary die in accordance with instructions packaged with the dies.
2. Activate the power unit to advance the dies and hold terminal or splice in place.
3. Insert the stripped wire into the terminal or splice.
4. Activate the power unit to complete the crimp.
6. INSPECTION AND MAINTENANCE
DANGER
Verify hydraulic pressure is released and power supply is disconnected before following inspection and maintenance
procedures, unless otherwise specified in the procedure.
Each crimping head is assembled and inspected before shipment. TE Connectivity recommends that the
crimping head be inspected immediately upon its arrival at the facility of use, and at regularly scheduled
intervals to ensure the head has not been damaged during handling and use. Frequency of inspection
depends upon the following: care, amount of use, and handling of the head; type and size of products crimped;
degree of operator skill; and environmental conditions.

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Visual Inspection
Refer to Figures 3 and 5; proceed as follows:
1. Inspect the assembled crimping head for nicks, scratches, cracks, and excessive wear, especially
where sliding contact occurs.
2. Inspect for cracks particularly at the corners of the “C”-Head and around the top of the cylinder.
NOTE
Once per year, or every 7,500 cycles (whichever comes first), the hydraulic head should be returned to TE for magnetic
particle inspection. Additionally, inspect and service the head every month or 1,000 cycles.
Figure 3
Cleaning
1. Remove accumulations of dirt and grease on the crimping head; especially in areas where dies are
installed and terminals are crimped.
2. Clean the entire head frequently with a clean, lint-free cloth.
Crimping Head Check-Out Procedure
If the ram fails to retract after completion of a crimping cycle, the cause may be in the crimping head. To
determine whether the trouble is in the crimping head or not, release pressure in the power unit.
If the ram retracts, the trouble is not in the crimping head.
If ram does not retract, refer to paragraph 7. REPLACEMENT and REPAIR

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7. REPLACEMENT AND REPAIR
Customer-replaceable parts are listed in Figure 4. A complete inventory should be stocked and controlled to
prevent lost time when replacement of parts is necessary. Order parts through your TE representative or call
1-800-526-5142, or send a facsimile of your purchase order to 1-717-986-7605, or write, or return the entire
tool for evaluation and repair, with a written description of the problem to:
CUSTOMER SERVICE (38-35)
TE CONNECTIVITY CORPORATION
P.O. BOX 3608
HARRISBURG, PA 17105-3608
Tools may also be returned for evaluation and repair. For tool repair service, contact a TE representative at
1-800-526-5136.
Item
Number
Part Number
Description
Quantity
Per Head
1
21013-4
Screw, Socket Head, Self-Locking, 1/4-20 UNC x 9.52 mm [.375 in] Long
2
2
311470-1
Coupler, Quick-Disconnect, Cylinder Half
1
Figure 4

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8. TROUBLESHOOTING
Part
Inspection and Problem
Possible Solution
“C”-Head
Inspect for cracks, gouges, nicks, or galling on the “C”-Head
or where the “C”-Head contacts dies
Return tool for repair (see Section 7)
Check to see if the upper die retaining pin does not hold the
stationary die in place
Return tool for repair (see Section 7)
Check to see if the upper die release button sticks (it should
normally move in and out easily when moderate pressure is
applied)
Return tool for repair (see Section 7)
Cylinder
Inspect for evidence of cracks, gouges, nicks, or galling
If there are cracks, return the tool for repair (see
Section 7)
For traces of gouges, nicks, or galling: remove
any sharp edges using a fine emery cloth
Inspect for oil leaks between the cylinder and coupling
For oil leaks and a sticky coupling, tighten or
replace the coupling
Check to see if the coupling sticks to the cylinder (it should
normally turn on and off freely when moderate pressure is
applied with a wrench)
Quick-Disconnect
Coupling
The coupling mates hard or will not mate or release, or it
leaks oil, or it sticks at the hose connection
Replace coupling
Ram
Inspect the ram in the Power “ON” (ram advanced) position
for evidence of galling, cracks, or oil leaks between the ram
and the cylinder
If there are cracks or leaks, return the tool for
repair (see Section 7)
If there is galling, remove any sharp edges
using a fine emery cloth
Check to see if the lower die retaining pin does not hold the
moving die in place
Return tool for repair (see Section 7)
Check to see if the lower die release button sticks (it should
normally move in and out easily when moderate pressure is
applied)
Return tool for repair (see Section 7)
Inspect the ram in the Power “OFF” (ram retracted) position
to ensure that the ram returns freely to its original position
Return tool for repair (see Section 7)
Figure 5
9. REVISION SUMMARY
Latest TE logo and formatting resulting in numbering changes of some paragraphs
Added Warning (paragraph 1)
Moved info on magnetic particle inspection from previous paragraph 5 to new paragraph 6.1.as a
NOTE
Added Section 8 TROUBLESHOOTING and Figure 5