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Step B1 - Prepare Special Service Tools
The Special Service Tool Case MKM-923-A contains the following tools and
materials needed for wiring harness repair:
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Position
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Designation
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Handle colour
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For cable cross-section
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Crimping tools
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1
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MKM-923-31
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red
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0.5 / 0.75 / 1.0 mm 2
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2
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MKM-923-32
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blue
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1.5 / 2.5 mm 2
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3
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MKM-923-33
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yellow
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4.0 / 6.0 mm 2
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4
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MKM-923-34
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green
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0.35 mm 2
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Release tools
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5
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Release Tools MKM-923-1 to MKM-923-10A and MKM-923-12A for
applications as of system introduction.
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6
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Space for additional release tools (round).
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7
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Space for additional release tools.
Note: Release tools
MKM-923–1 to MKM 923–12A are suplied with the case.
Other release tools need to be ordered seperatly.
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Storage containers
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8
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for cable connectors.
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CAN-bus repair
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For CAN-bus repair a seperate strip tool is available, the
special tool number is MKM-6383 .
This tool is to be used for stripping only, crimping still has to
be done with MKM-923 .
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Description of Crimping Tool
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The crimping tools are combined crimping tools and wire
strippers having the following features:
Wire stripping station
Each crimping tool has two wire stripping stations with length
stop (1) for the smallest cross-section, e.g. 0.5 mm 2 (2), and for all other cross-sections, e.g. 0.75 mm
2 and 1.0 mm 2 (3).
The length of stripped wire is adapted to the corresponding cable
connector.
Crimping imprint
When crimping, the crimp nest (4) makes the imprints "1" (red
crimping tool), "2" (blue crimping tool), "3" (yellow crimping
tool) and "4" (green crimping tool) on the base of the cable
connector. In this way, the respective crimping tool identifies the
cable connector each time it is used.
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Handle colours
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The handle colours red, blue, yellow and green correspond to the
use for the respective cable cross-section categories.
These colours are given on the packaging for the cable
connectors and shrink-down plastic tubes. This enables the correct
crimping tool to be matched unambiguously to the packaging for the
cable connectors and shrink-down plastic tubes.
Function features
- Lock (5) for securing the connector when inserting the
cable.
- The automatic pressure adjustment (6) with automatic release
(7) ensures optimum crimping quality during the crimping process
once a set application pressure has been reached in the final
position.
- A releasable automatic stop (8) prevents damage to the tool if
used incorrectly, e.g. when a larger connector is inserted. To
release, squeeze tool and at the same time turn release screw to
the right with a screwdriver.
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Description of Release Tools
Release tools have been developed for releasing defective spring
contacts and cables. The tips of release tools have been specially
adapted (1 to 8) to prevent damage to wiring harness plugs and
spring contacts.
To ensure the plug is released correctly, the release tools must
be selected according to the Parts and Reference Lists (see section
5) .
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Release tool in case
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The Release Tools MKM-923-1 (1)
to MKM-923-10A and MKM-923-12A (8) are already provided in the
case. Release tools as of MKM-923-20
can be ordered additionally if required and kept in the empty
spaces in the case.
Tool types
There are three different tool types
available for releasing purposes. These are suitable for spring
contacts
- with one locking spring (9)
- with two locking springs (10),
- "round" (11).
Important: The
spring contact to be released on the cable is pushed as far as
possible into the casing. Then, the release tool is inserted into
the respective chamber (9 to 11) until resistance can be felt. Pull
out spring contact.
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New release tools
New release tools have gradually been
developed alongside new applications and new spring contacts. The
following table lists the currently available release tools.
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Suplied with case
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Old MKM nr.
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New MKM nr.
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MKM - 923 - 1
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MKM - 923 - 1-A
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MKM - 923 - 2
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MKM - 923 - 2-A
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MKM - 923 - 3
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MKM - 923 - 3-A
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MKM - 923 - 4
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MKM - 923 - 4-A
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MKM - 923 - 5
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MKM - 923 - 5-A
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MKM - 923 - 6
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MKM - 923 - 6-A
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MKM - 923 - 7
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MKM - 923 - 7-A
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MKM - 923 - 8
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MKM - 923 - 8-A
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MKM - 923 - 9-A
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MKM - 923 - 10-A
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MKM - 923 - 12-A
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Not suplied with case, order separatly
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Old MKM nr.
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New MKM nr.
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MKM - 923 - 20
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MKM - 923 - 20-A
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MKM - 923 - 21
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MKM - 923 - 21-A
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MKM - 923 - 22
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MKM - 923 - 22-A
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MKM - 923 - 23
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MKM - 923 - 24
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MKM - 923 - 25
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MKM - 923 - 26
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MKM - 923 - 27
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MKM - 923 - 28
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MKM - 923 - 29
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