SkyTrak 6036 Service Manual - Manual (Page 146)

Section 9. Hydraulic System
9-33 Model 6036 S/N 9B0499 and Before
9.2.4 Grille Tilt Cylinder
a. Removal
1. Remove any attachment from the quick attach
assembly.
2. Tilt the quick attach assembly fully forward
and lower it, face down, to the ground
3. Engage the park lock, place the travel select
lever in neutral, and stop the engine.
4. Operate the hydraulic controls after the engine
has stopped to relieve any trapped pressure.
Warning !
Warning !
Relieve hydraulic pressure before servicing any
hydraulic component. Escaping hydraulic fluid
under pressure can penetrate the skin causing
serious injury.
Wait for the hydraulic fluid to cool before servic-
ing any hydraulic component. Hot hydraulic fluid
can cause severe burns.
5. Remove the rod end pin, Fig. 9.14, and its
locking capscrew and locknut securing the
grille tilt cylinder rod to the quick attach.
6. Start the engine and fully retract grille tilt
cylinder.
7. Disconnect the hydraulic lines from the
cylinder and cap or plug open connections.
8. Remove the pin and snap rings securing the
grille tilt cylinder tube to the gooseneck.
9. Remove cylinder from forklift using strap sling
and hoist or other suitable lifting equipment.
b. Disassembly
1. Remove all dirt and grease from 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 (14 and 15).
4. Remove the counterbalance valve (13, Fig.
9.15) and three O-rings (16) and backup rings
(17) from the tube.
5. Using a pin spanner wrench, unscrew the
gland (8) 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 (11) 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 (4).
Keep the rod in line with the tube barrel to prevent
binding.
7. Remove piston seal (3) from piston (4).
8. Fasten the eye of the rod in a soft-jawed vise
and put a padded support below and near
other end of rod to prevent damage to the rod.
NOTE: It may be necessary to apply heat to
break the bond of the sealant between nut (2) and
rod (11) before the piston can be removed. Refer
to paragraph 9.2a.
9. Remove nut (2), piston (4), and the gland (8)
from the rod.
10. Remove the O-ring (5) from inside of the
piston.
11. Remove the O-ring (6), backup ring (7), wiper
(10) and rod seal (9) from the gland.
INNER
BOOM
GOOSENECK
Fig. 9.14 Grille Tilt Cylinder Gooseneck
BASE END PIN
GRILLE TILT
CYLINDER
QUICK ATTACHMENT
LOCK PIN
ROD END PIN
MA0021