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Occasional maintenance
Wing sections lock mechanisms and horizontal alignment of first & second outer and second & third
outer/breakaway
Wing-lock mechanisms are those positioned at the first & second and
the second & third outer wing fold hinge points. They lock the wing
sections together in the open position minimising movement between
them during operation. They are spring applied and hydraulically
released. Any misalignment between the spigot and lock plate will
prevent locks from engaging and allow the wing sections to move
uncontrolled. Monitor the spigot and lock plate for any sign of burring
which would indicate misalignment and adjusting as required.
Boom must be unfolded and the hydraulic lock locked.
Procedure is:
1. Loosen lock nut (A).
2. Adjust the lock bolt (B) until the boom sections align.
÷
NOTE! The lock bolt (B) is exccentric. Therefore it is important to
check that it centres on the hole in the lock mechanism while
adjusting.
3. Tighten the lock nut (A) again.
±
Warning! The boom must not be operated without the wing locks correctly engaged otherwise wing sections will be
free to flounder, breakaway or whip around and damage the boom. Wing locks must be monitored observing burred
steel on the nose of the spigot and lock plate for any misalignment and adjusted as required.
Transport wing fold lock adjustment
The fold lock mechanism positioned on the top cord of the first outer
wing sections is designed to retain and lock the second outer wing
section during transport. The lock is spring applied and hydraulically
released. Any misalignment will prevent the lock mechanism
engagement and allow the boom to flounder in transport. If there has
been any boom damage the lock mechanism may need to be realigned.
The "Vertical alignment of boom between first, second and third outer
sections" on page 25 must be done prior to this adjustment.
The fold lock adjustment is divided into two parts: Vertical and
horizontal adjustment:
Horizontal adjustment
1. Loosen the five bolts (A) on the fold lock bracket.
2. Repostion the fold lock until the hook is aligning to the centre of
the fold lock hole.
3. Tighten the five bolts (A) on the fold lock bracket.
Vertical adjustment
1. Loosen the bolt (B).
2. Turn the hook upside down if needed for better fit.
3. Tighten the hook bolt (B) again.
±
WARNING! Any misalignment of the wing sections will prevent the lock mechanism from engaging and will allow the
boom to flounder during transport which may damage the boom.
6 - Maintenance
63
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