User Manual

9
Fig. J
4.3.2 To loosen a nut or bolt (fig. I & J)
• Apply penetrating oil to the threads.
Allow the oil to soak.
• Position the tool on the nut or bolt
with the anti-clockwise (-) side facing
upwards.
• Position the reaction foot (17) against
a suitable reaction point (18). The
reaction point will counteract the
force caused by operating the tool.
• Start the pump.
• Operate pump until nut (bolt) is loose.
If the nut or bolt will be re-used
avoid excess load when
loosening.
- Be aware that when loosening a nut
or bolt more torque is usually required
than when tightening.
- Humidity corrosion (rust) requires
up to twice the torque required for
tightening.
- Sea water and chemical corrosion
requires up to two and a half times
the torque required for tightening.
- Heat corrosion requires up to
three times the torque required for
tightening.
Be aware that when loosening a
nut or bolt shock loading can
occur. Do not apply more than
75% of the wrench’s maximum
torque when loosening nuts or
bolts.
Fig. I