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L4478_a
5.3 Operating HMT with HSQ
Cassette Assembly
The position of the tool relative to the nut determines
whether the action will tighten or loosen the nut. The
power stroke of the piston assembly will always turn the
square drive toward the body spacer.
1. Before using the HMT drive unit and HSQ cassette
assembly, cycle the wrench two or three times to
ensure that the link is inserted correctly.
2. Select correct socket for bolt to be loosened /
tightened.
3. Ensure the reaction arm contacts a suitable
reaction point at a 90° angle from the square drive,
as per the following image;
4. After having turned the pump on, input the pre-
set pressure for the correct torque, and using the
remote control advance the piston assembly.
Ensure that the rod end has engaged with
the drive pin in the square drive cassette assembly prior
to use.
5. When the socket is connected to the nut and the
wrench started, the reaction surface of the wrench
will move against the contact point and the nut will
begin to turn. Once the piston reaches the end of its
stroke, the pressure will rise rapidly. On the pump
use the controls to retract the tool. There is usually
a series of audible clicks as the tool retracts.
6. Continue this cycling operation of advance and
retract until the socket is no longer turning and the
pump gauge reaches the pre-set pressure.
CAUTION
Figure 16: Position HMT with HSQ Cassette with a
suitable reaction point
7. Once the nut stops rotating, cycle the tool one last
time to ensure final torque has been achieved.
8. To reverse the torque wrench direction, release the
drive retainer and pull out the square drive. Move
the square drive to the opposite side and reinsert
retainer.
6. Storage
6.1 Recommended Storage
Enerpac tools should be stored in a cool, dry place.
Tools should always be cleaned, serviced and lubricated
prior to storage. Ensure that tools are stored in their
designated packing cases.
Summary of Contents for HMT Series
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