TCM FD35C9, Workshop Manual

Page: 17 / 291

1-9
<Precautions to take when overhauling cylinders>
(1) Do not try to overhaul cylinders while they are mounted on the truck.
Remove the cylinder assembly and overhaul it in a workshop.
(2) When removing a cylinder from the truck, secure it to a mast
connecting member with rope, to prevent it from falling. Do not try to
hold it in your hands.
(3) Do not try to lift a cylinder by hand. Your hands might get crushed
under the cylinder if you can’t hold it or if you lose your balance.
(4) Put the cylinder you are going to overhaul on a work bench and hold
in a vise. The work bench should be equipped with a V groove to
prevent the piston rod from rolling off the bench.
(5) Remove the piston rod from the cylinder. If the piston rod is hard
to remove by hand, apply compressed air from the tail side of the
cylinder to push the piston rod out.
(6) When using compressed air, fit a cylinder cap over the piston rod, to
prevent the piston rod from popping out. Be very careful not to be
injured by the piston rod extending unexpectedly.
(7) When removing the piston rod with a crane, the cylinder cap might
drop onto the piston. Use caution not to get your hands pinched. Hold
the side of the piston or hold the piston with a rope.
(8) For cylinders used in lift trucks with a capacity over 8 tons, secure the
cylinder tail to a pole in the room and remove the piston rod using a
sling hook and a lift truck.
(9) When replacing the piston seal with a new one, use a special spatula to
remove the old seal. (Do not use a prick punch. You might get injured
and you may damage the piston.)
Boom and bucket cylinders
Lift cylinder