23
ASSEMBLY OF ALUMINIUM HUB FOR BOOM
- Manually bring the boom to a horizontal position.
- Pull the 2 holding screws of the boom with Allen key No. 5 (Fig. 31-32).
- Assemble the protection using the washers and screws provided (Fig. 33-34-35-36-37-
38-39).
- Release the boom, checking that it rises until it reaches complete opening. If the boom does
not rise, check the correct pulling in the spring (Fig. 40-41) as shown in the appropriate
SPRING CALIBRATION TABLE.
44
31
43
42
33
37
35
39
46
32
34
38
36
47
45
- Take the 8x7x20 latch and insert it into the seat of the hub holder shaft (Fig. 44-45).
- Assemble the hub on the shaft in the correspondence with the latch, locking it with 2
stainless steel 10x70 TCEI screws, 4 stainless steel 10x20 washers and 2 M10 self-
locking nuts (Fig. 46-47).
CAUTION: Do not tighten to the bottom only one of the two screws.
The screws must be tightened alternately so that the hub is parallel with respect to
the hub holder shaft.
41
40
G
B
