HELI CQD16X1, Руководство по эксплуатации и обслуживанию

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The outer mast channel steel is of C type and combined roller is installed on its
upper end.
The middle mast channel steel is of H type and combined roller is installed on
upper and lower end.
The inner mast channel steel is of H type and combined roller is installed on
lower end.
The roller can not only bear the radial force and lateral force through adjusting
the clearance between the combined roller and mast. (The maintenance of the all
combined rollers is important. Take care of their safety. )
Combined roller:
Φ102.92(rest positions, the difference between combined rollers at top end of
outer mast, inner mast and middle mast is that the adjusting bolts have different length,
others are the same.)
Φ119.2 ( at the lower end of middle mast)
Φ110.4 (out fork plate of attachment)
Φ78.5( inner fork plate of attachment)
4.8.2 Torque requirements
1)Tighten torque of four M20 bolts connecting outer mast cross beam and frame:
305-340Nm.
2) Tighten torque of four M12 bolts fixing mast install shaft and mast support:
90-100Nm.
3) Tighten torque of four M16 bolts fixing load wheel assembly and
frame:225-250Nm.
4) Tighten torque of two M14 bolts fixing front cylinder: 130-140Nm.
4.8.3 Fork adjustment
Make the fork at its lowest position and under level state, adjust to make the
distance between top surface of fork end and ground to be lower than 65mm.