SkyTrak 6036 Service Manual - Manual (Page 137)

Section 9. Hydraulic System
Model 6036 S/N 9B0499 and Before 9-24
Warning !
IMPORTANT: Do not attempt to reset the boom
hoist cylinder counterbalance valves. If replace-
ment is necessary, replace both left and right hoist
cylinder cartridges at the same time with new
ones.
5. Using a pin spanner wrench, unscrew the
gland (14) from the tube.
IMPORTANT: Protect the finish on the rod at
all times. Damage to the surface of the rod can
cause premature seal failure.
6. Pull the rod (17) and attached parts straight
out of the tube.
IMPORTANT: When sliding the rod and piston
assembly in the tube, be careful so that gland
threads in the tube do not damage the piston (9).
Keep the rod in line with the tube barrel to prevent
binding.
7. Remove the piston seal (10) from the piston.
8. Fasten the eye end of the rod (17) in a soft-
jawed vise and put a padded support below
the rod near the piston to prevent damage to
the rod.
NOTE: It may be necessary to apply heat to break
the bond of the sealant between nut (8) and rod
(17) before the piston can be removed. Refer to
paragraph 9.2a.
9. Remove the nut (8), piston (9), and gland (14)
from the rod.
10. Remove the O-ring (11) from the inside of the
piston.
Wait for the hydraulic fluid to cool before servic-
ing any hydraulic component. Hot hydraulic fluid
can cause severe burns.
SLAVE CYLINDER
HOIST CYLINDER
OPTIONAL SIDE TILT CARRIAGE CYLINDER
IS SHOWN IN FIGURE 9.20
EXTEND CYLINDER
FRAME TILT CYLINDER
GRILLE TILT CYLINDER
Fig. 9.9 Hydraulic Cylinders
MA0501
5. Remove pin and its locking capscrew and lock
nut securing the boom hoist cylinder rod to the
outer boom.
6. Start the engine and fully retract cylinder.
7. Disconnect the hydraulic lines from the
cylinder and cap or plug the open connections.
8. Remove the pin and snap rings securing the
boom hoist cylinder to the frame.
9. Remove the cylinder from the forklift using a
strap sling and hoist or other suitable lifting
equipment.
b. Disassembly of Boom Hoist Cylinder
with "TJB" Stamping
1. Remove all dirt and grease from the cylinder.
2. Fasten the cylinder in a soft-jawed vise or
other acceptable holding equipment. Do not
damage the tube.
3. If necessary to replace, remove the grease
fittings (5, Fig. 9.10) and plugs (4 and 6).
4. Remove the counterbalance valve (1) with O-
rings (2) and backup rings (3) from the tube
(7).