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7. Lifting system
7.1 Summarize
Lift system consist of dual mast (inner and outer mast respectively), roller lift and lower
vertically, and fork.
7.2 Inner and outer mast (figure 2-68)
inner and outer mast constructed by welding. Bottom of outer mast fit on drive axle by brace.
Middle of outer mast connect with frame through tilting cylinder and it can tilt forward and
backward actuated by tilting cylinder.
1. inner mast
2. guide board
3. adjusting
pillow
4. out mast 5. plain roller
wheel for outer
mast
6. pin roll for
tilting cylinder
7. spring
washer
8. bolt
9. oil cup
10. bearing
bush
11. supportor
cover
12.
Spring washer
13. bolt
14. roller
wheel
Figure 2-68 inner/outer mast
7.3 Fork carriage (figure 2-69)
Fork carriage move inside inner mast by main roller, main roller fitted on shaft locked by clip
ring, main roller shaft also welded on fork carriage, side roller fixed on fork carriage by bolts, rolling
along outside of wing board of inner mast, it can be regulated by adjust shim. In order to prevent
rolling clearance, there are two fastness side roller rolling along outside of wing board of outer
mast. Longitudinal load borne by main roller, when fork lift on top,upper roller appear from top of
mast. Transverse load borne side roller.
