Haulotte HTL4014, Operator'S Manual

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2420331560 E 04 07 GB
TELESCOPIC HANDLERS
8 - After the first 50 hours of opera-
tion
8.1 - CHAIN TENSION CHECK AND ADJUSTMENT
8.1.1 - Chain tension check
After the first 50 hours and then after every 250 hours, check the telescoping chain tension in
accordance with the following procedure.
8.1.2 - Arm chain tension adjustment
The arm is fully extended horizontally following the chain tension check (See Section H, 7.1.1).
Retract the telescopic action jack by approx. 1m in order to apply tension to the retracted telescoping
chains (non-accessible chains).
Retighten the upper extended telescoping chains with a torque wrench by applying a 70Nm torque
to each of the locking nuts on the threaded rods situated at the end of each of the chain yokes.
Ensure that you distribute the tension between the chains by turning one of the nuts and then the
other by successive ½ turns.
Then retighten the lower extended telescoping chains (only on the 17m. arm) by applying a 60Nm
torque to each of the locking nuts on the threaded rods situated at the end of each of the chain
yokes. Ensure that you distribute the tension between the chains by turning one of the nuts and then
the other by successive ½ turns.
Finish retracting the arm; the cases should start moving simultaneously.
• Telescope the arm fully horizontally.
• In the median vertical plane of one of the chains si-
tuated under the arm, measure the distance D1
between that chain and the case.
• Push the chain upwards in the same median vertical
plan and measure the distance D2 between that
chain and the case again.
• Calculate the difference D1-D2. If the value obtai-
ned is more than 25mm, you must retighten the
chain following the procedure described in Section
H, 7.1.2.
• Repeat the procedure described above for each of
the telescoping chains situated under the arm.