SkyTrak 6036 Service Manual - Manual (Page 203)

Section 9 Hydraulic System
Model 6036/6036T S/N 9B0500 thru 14833 9-53
Warning
9.5.9 Frame Tilt Cylinder
a. Removal
1. Level the frame. Place blocking between
frame and axle to maintain machine stability
when frame tilt cylinder is removed.
2. Engage the park lock, place the travel select
lever in neutral, and stop the engine.
3. Operate the hydraulic controls after the engine
has stopped to relieve any trapped pressure.
4. Remove the snap rings locking the rod end pin
in the axle mounting block. Tap the pin from
the mounting block.
5. Start the engine and fully retract the frame tilt
cylinder. Then shut engine OFF.
6. Disconnect the hydraulic lines from cylinder
and cap or plug open connections.
7. Remove the snap rings and pin securing the
frame tilt cylinder tube to the frame, Fig. 9.27.
8. Remove the frame tilt cylinder from the forklift
using a strap sling and hoist or other suitable
equipment.
b. Disassembly
1. Remove all dirt and grease from cylinder.
2. Fasten the frame tilt cylinder in a soft-jawed
vise or other acceptable holding equipment.
Do not damage the tube.
3. Remove both check valves (1, Fig. 9.28) and
related O-rings (15) and backup rings (16).
4. 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.
Warning
Relieve hydraulic pressure before servicing any
hydraulic component. Escaping hydraulic fluid
under pressure can penetrate the skin causing
serious injury.
TUBE PIVOT
PIN
ROD END
PIVOT PIN
Fig. 9.27 Frame Tilt Cylinder Pivot Pins
5. Pull the rod (13) 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 (5).
Keep the rod in line with the tube barrel to prevent
binding.
6. Fasten the eye of rod (13) in a soft-jawed vise
and put a padded support below and near
other end of the rod to prevent damage to the
rod.
7. Remove piston seal (7) from the piston.
NOTE: It may be necessary to apply heat to break
the bond of the sealant between nut (4) and rod
(13) before the piston can be removed. Refer to
paragraph 9.5.a.
8. Remove nut (4), piston (5), and the gland (8)
from the rod.
9. Remove O-ring (6) from inside of the piston.
10. Remove O-ring (9), backup ring (10), wiper
(12) and rod seal (11) from the gland.
11. If necessary to replace, remove grease fittings
(14) and plugs (2).
c. Cleaning
1. Discard all seals and backup rings. Replace
with a complete new seal kit.
2. Clean all metal parts in an approved cleaning
solvent such as trichlorethylene. Be sure to
carefully clean cavities and grooves.
FRAME TILT
CYLINDER
AXLE
MOUNTING
BLOCK
Wait for the hydraulic fluid to cool before servic-
ing any hydraulic component. Hot hydraulic fluid
can cause severe burns.
MA0571
FRAME