Komatsu FD115-7 - Page 73

REMOVAL AND INSTALLATION MAST
EX20 Series 30-9
980.5–1,373 Nm
{100–140 kgm}
441–539.5 Nm
{45–55 kgm}
373–426 Nm
{38–43.5 kgm}
441–539.5 Nm
{45–55 kgm}
824–1,030 Nm
{84–105 kgm}
113 Nm
{11.5 kgm}
Method for bleeding air from lift cylinder
(1) Start the engine and run at low idling.
(2) Raise and lower the mast.
Stop the mast approx. 100 mm before reaching
the max. lifting height and max. lowering posi-
tion.
(3) Repeat Step (2) 4–5 times.
(4) Raise and lower the mast to the maximum lifting
height and maximum lowering position.
(5 )Repeat Step (4) 4–5 times.
Inner mast
Outer mast
Shims
Cylinder
rod
54–118 Nm
{5.5–12 kgm}
2
Adjust with shims so that the left and right cylinders
are synchronized at the maximum lifting height.
Moves to left Insert shim to left cylinder
Moves to right Insert shim to right cylinder