HELI CPD15, Руководство по эксплуатации и обслуживанию

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6.3 Fork bracket
The fork bracket runs inside of the iner mast through main roller. The main roller
is installed on main roller shaft with snap ring. The main roller is welded on fork
bracket. The side roller of upright plate is fixed on forkbracket with bolt. The
longitudinal load is beared by main roller. When the fork is lifted to the highest
position, the upper roller comes out form the mast upper end. The transverse load is
beared by side roller.
Figure 6-2 Fork brakcet
6.4 Roller adjusting method
There are 10 main rollers which are installed on outer mast upper end (2), inner
mast lower end (2) and two sides of forkbracket upright plate (6) respectively.
There are 8 combined rollers which are installed on outer mast upper end (2),
inner mast lower end (2) and fork bracket (4) respectivily.
The using of main roller and combined roller makes inner mast and fork bracket
move smoothly.
Backrest
Main roller
Combined roller
Main roller
Side roller