TYM T303HST, Workshop Manual

Page: 196 / 249

SECTION 5. HYDRAULIC SYSTEM
1.HYDRAULIC CYLINDER
1) Hydraulic system must be washed clean,and care must be taken not to let any foreign substances.
2) The O-ring and back-up ring should be coated with grease ahead of time.Install with care so as not
to damage them.
3) Install the Piston from the cylinder head side.
4) The lift arms should be assembled mutually by reference to their matching marks.
5) When installing the control valve,apply grease to the O-rings and avoid their dislocation or binding
during tightening the valve to the specified torque 130 ∼ 180
㎏
f-
㎝
6) The safety valve should be installed levelly,and make sure there is no oil leak through the filter seal
. Tightening torque is 700 ∼ 800
㎏
f-
㎝
7) The spool should move smoothly after assemble the control valve.
8) The lift crank should be installed levelly,and make sure there is no interference through the pipe.
9-17
Fig.9-33. Hydraulic cylinder.