Action 2: Unscrew rod-side
rod ends
Aids, tools, materials
■
See instructions for replacing rod ends in chapter 7.4.5.
1. Open the rod-side rod ends using an open-end wrench while holding the nut in place with another
wrench.
■
Rod end: wrench size 22
■
Nut: wrench size 24
2. Unscrew the rod ends from the piston rod.
✓
The restraint system is no longer locked.
3. Make sure that all ride passengers can disembark safely.
4. Clean and inspect the hydraulic locking unit in accordance with the maintenance measures.
The locking unit has been prepared for use again. Replace the rod ends as instructed in this
manual.
Permission to continue use of the hydraulic locking unit has not been unequivocally granted or
there are still doubts. Get in touch with HAWE Micro Fluid GmbH.
5. Check locking, opening, and holding functions in accordance with the chapter on function testing
(page
) once you have nished connecting the hydraulic locking unit.
Action 3: Remove check
valve
Draining the hydraulic uid will depressurize the hydraulic locking unit, and the restraint system can be
opened.
This is an irreversible action. The hydraulic locking unit must then be replaced.
►
Carry out the following actions only if unlocking the hydraulic locking unit is not possible
either by connecting power or by pushing the emergency override button or by dismantling the
rod-side rod ends.
DANGER
Danger to life from pressurized systems
When lines and components on pressurized systems are disconnected, hydraulic uid escapes at high
pressure and penetrates deep into the body via the skin and eyes. Severe injury or death.
►
Depressurize the hydraulic system including the pressure tank.
►
Secure the hydraulic system against unintentional restart.
►
Check components for correct assembly before pressure is applied.
►
Observe maximum pressure load for screw ttings and lines.
CAUTION
Risk of falling from leaking hydraulic uid
Spilled or leaked hydraulic uid can form a slippery lm on the oor.
►
Use suitable aids when lling or bleeding.
►
Check all connecting elements that convey oil for leaks before switching on the motor in the parent
system.
►
Wipe up leaked hydraulic uid with suitable aids.
Aids, tools, materials
■
M8 hex key
■
M10 hex key
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HAWE Hydraulik SE