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Connecting the Optional 2 Speed Harness Kit to an Excavator, Telehandler or Backhoe
The drive unit is connected to the 2 Speed controller (mounted in the Cab) via an extension harness. This
harness contours the hydraulic hoses on the boom of an excavator. The extension harnesses are available in
3m (10'), 6m (20'), 12m (40') or 15m (50') length. The boom harness can be attached to the hydraulic lines of the
excavator using cable ties (see illustration on the following page).
The optional Electrical harness kit comprises the following parts:
• 1x Extension harness, which is available in 4 dierent lengths depending on the machine size. These
lengths are; 3m (10'), 6m (20'), 12m (40’), and 15m (50’).
• 1x 2 Speed controller part number DM-000013. This controller has a 1.5m (5') long harness terminated
with a 4 pin female Deutsch plug.
• 1x12V/24V power lead part number TC-000012.
The controller plugs into the extension harness and the extension harness plugs into the Deutsch plug on the
motor harness. The motor harness part number DM-000021 is connected inside the hood to the hydraulic motor
(at the factory). On the harness of the 2 Speed controller and approximately 70mm (3") from the Deutsch Plug
are two leads with a 2-pin plug on each lead . The male plug is tagged showing “SUPPLY 12V/24V” and is the
main point where power is supplied to the 2 Speed system. The other plastic 2-pin plug is a female plug that is
tagged “Remote”. It is this plug that an optional 2 Speed joystick mounted toggle switch part number DM-000026
or Floor mounted dipswitch part number DM-000030 can be plugged into (see illustration on the following page).
Operation of the 2 Speed
• The speed controller (mounted in the excavator cab) is a 2 Speed unit. This allows the operator to select
the optimum speed required for drilling, core barrelling or applying screw pylons into the terrain.
• HIGH Speed is Low Torque - LOW Speed is High Torque (see the torque chart supplied with your drive
unit to read, output RPM and corresponding torque at an applied hydraulic pressure).
12 2 Speed Installations-Electrics
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