HARDI-EVRARD ALPHA PLUS 3500, Operating And Maintenance Manual

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ALPHA PLUS HARDI NOVA
M M A A II N N T T E E N N A A N N C C E E
CHAPTER
5 5- 15
The guide rods length should normally not need to be adjusted. If the suspension has been dismantled, the
length must be checked or adjusted if necessary.
The trapeze and pendulum must hang freely. Adjust the length of the rod ((F
F)) accordingly.
- Loosen the counter nuts and adjust the rods.
The boom tip must point slightly forward. If necessary adjust the
inner section folding as follows :
- Depressurize the folding rams
- Loosen counter nut ((A
A))
- Adjust stop srew ((B B)) until the correct setting is reached
- Tighten counter nuts again
A A
B B
3 3 - G G u u ii d d e e rr o o d d ss ll e e n n g g tt h h aa d d jj u u ss tt m m e e n n tt
4 4 - II n n n n e e rr ss e e cc tt ii o o n n ff o o ll d d ii n n g g aa d d jj u u ss tt m m e e n n tt
1 1 - S S u u ss p p e e n n ss ii o o n n ss p p rr ii n n g g tt e e n n ss ii o o n n
- Loosen the counter nuts ((A
A)) in either side and adjust the
tension of the vertical springs on the bolts ((B B)) to suit the
boom weight. The adjustment is correct when the guide
- Tighten the counter nuts again ((A
A))..
A A
B B
F F
E E
D D
C C
H HA AZ Z B Bo oo om m aad djju ussttm me en ntt
- Ensure that the slanting ram is set midway
- Loosen the counter nuts ((C
C)) and adjust the stop screws ((D D)) until the V-shaped mechanism is in symmetry
- Allowe max. 1
1 mm play between stop screw and arm
- Loosen the counter nuts ((E
E)) on the rigging screws, and adjust the length of the rigging screws until boom is level.
The correct adjustment is reached when the spring opens 1 1 mm between the threads.
- Tighten the counter nuts again
2 2 - P P e e n n d d u u ll u u m m rr e e tt u u rr n n ss p p rr ii n n g g aa n n d d cc aa b b ll e e ss
F F