Instruction Sheet
Mass Termination Assembly (MTA)
Terminating Head Repair Kits 856600-[ ]
408-9745
28 FEB 08
Rev B
TERMINATING HEAD
REPAIR
KIT
PART
NUMBER
DESCRIPTION
INSTRUCTION
SHEET
2
Compression
Spring (Ref)
Hex Head
Screw (Qty: 4,
Ref)
58246-1
856600-1
856600 1
58246-3
58247-1
58247-3
MTA-100
Receptacles
408-6929
408-4147
408-6930
408-4146
MTA-156
Receptacles
856600 2
856600-2
Roll Pin
(Ref)
58392-1
MTA-156 Quad
Connectors
408-9450
Housing (Ref)
Figure 1
1. INTRODUCTION
6
Inserter
3
5
4
(Ref)
This instruction sheet covers the installation of MTA
Terminating Head Repair Kits 856600–[ ] for repair of
the terminating heads listed in Figure 1. Read these
instructions thoroughly before using the repair kit.
Refer to the instructions packaged with the MTA
terminating head for setup and adjustment
instructions.
Reasons for reissue of this instruction sheet are
provided in Section 5, REVISION SUMMARY.
2. DESCRIPTION
1
Each repair kit is designed to replace all of the
wearable parts in the terminating head. The items
contained in the repair kit and their function are as
follows:
Cam — indexes the feed slide after each termination
Locating pawl — aligns the connector for insertion
and retains it during termination
Feed pawl (with compression spring) — engages the
connector and indexes it into position for termination
ITEM
MTA Terminating
Head (Ref)
Adjuster (Ref)
QTY PER
REPAIR KIT
PART
NUMBER
DESCRIPTION
-1
(MTA
-100)
-2
(MTA
-156)
312159-1
CAM
CAM
PAWL, Locating
PAWL, Locating
PAWL, Finished Feed
SLIDE, Feed
SPRING, Compression
DRILL BLANK
1
1
1
1
1
1
1
1
1
1
1
1
Feed slide — automatically positions the connector
after each termination
Drill blank — helps to remove and install the roll pin in
the locating pawl
3. INSTALLATION (Terminating Head Repair)
1
312153-1
312161-1
2
312147-1
3
4
5
6
312192-1
312151-1
1-23147-2
21667-4
1. Remove the four hex head screws securing the
housing to the terminating head. See Figure 2.
2. Depress the adjuster slightly, and pull the
housing straight off the terminating head.
Figure 2
E
2008 Tyco Electronics Corporation, Harrisburg, PA
TOOLING ASSISTANCE CENTER 1-800-722-1111
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.tycoelectronics.com
1
of 2
LOC B
All International Rights Reserved
TE logo and Tyco Electronics are trademarks.
*Trademark. Other products, logos, and company names used are the property of their respective owners.
MTA Terminating Head Repair Kits 856600-[ ]
3. Remove the feed slide (subassembly) from the
housing.
CAUTION
The feed slide (subassembly) is spring-loaded.
Handle the subassembly carefully to avoid
408-9745
4. REPLACEMENT AND REPAIR
The repair kit should be stocked to prevent lost time
when replacement of parts is necessary. Order
replacement parts through your representative, or call
1–800–526–5142, or send a facsimile of your
purchase order to 717–986–7605, or write to:
CUSTOMER SERVICE (038–035)
TYCO ELECTRONICS CORPORATION
PO BOX 3608
HARRISBURG PA 17105–3608
Terminating heads may be submitted for evaluation
and repair. For customer repair service, call
1–800–526–5136.
!
inadvertent disassembly.
4. Using the drill blank, drive the roll pin past the
feed pawl. Remove and discard the old feed pawl.
5. Install the new feed pawl.
NOTE
BE SURE that the compression spring under the
locating pawl is properly located.
i
6. Install the new feed slide (subassembly).
7. Rotate and depress the adjuster slightly to
remove the cam. Inspect the condition of the
inserter. If the inserter is damaged or broken, it
must be replaced according to Section 4. The
inserter is not normally a wearing part and is not
contained in the repair kit.
8. Install the new cam, and rotate the adjuster.
Make sure that the cam and the inserter are
oriented as shown in Figure 2.
9. Install the housing into the terminating head as
follows:
a. Depress the adjuster slightly.
b. Guide the inserter into the slot in the housing.
c. Engage the feed slide into the opening in the
cam.
d. Place the housing on the terminating head
and secure it with the four hex head screws.
5. REVISION SUMMARY
Revisions to this instruction sheet include:
S
Updated document to corporate requirements
S
Added text to Section 2
S
Corrected terminology in Steps 4 and 5 of
Section 3
2 of 2
Tyco Electronics Corporation
Rev B
Microcontroller MCU
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