SkyTrak 3606 Service Manual - Manual (Page 310)

Section 9
9-116
10. Apply a compression sleeve or other suitable tool to
the gland in order to compress the O-ring (11).
Carefully insert the rod (6) with all attachments
straight into the tube (2). Use a pin spanner wrench
to thread the gland into the tube. Remove the
compression tool.
IMPORTANT: When sliding the rod and piston assembly
in the tube, prevent the threaded end of the tube from
damaging the piston seal (14). Keep the rod centered
within the tube to help prevent binding.
11. Install new O-rings and backup rings on the pilot
check valve (3). Lubricate the valve and rings with
clean, filtered hydraulic oil. Install and torque to 30-35
lb/ft (40,7 to 47,5 Nm).
12. If necessary, install both grease fittings (15) into their
threaded holes in the cylinder tube eyelet.
13. Test the side tilt cylinder at low operating pressure
(100 psi, or 6,9 bar). Verify that the piston and rod
move freely in both directions.
14. Increase the operating pressure to the maximum for
the cylinder (1750 psi, or 120 bar). Verify that the
piston and rod move freely in both directions.
15. Retract the piston fully and cap the hydraulic hose
ports. Install the cylinder on the carriage. Lubricate
the self-align bearing (8) via the grease fittings (15)
with multi-purpose grease before operating the side
tilt carriage on the vehicle.
f. Side Tilt Carriage Cylinder Installation
1. Install the side tilt carriage cylinder onto the side tilt
carriage (1, Fig. 9– 74). Secure the rod end to the
side tilt carriage with the cylinder rod pin (7) and snap
rings (11). Secure the tube end to the pivot base (5)
with the cylinder base pin (6) and snap rings (11).
2. Lubricate the pivot pins with multi-purpose grease.
3. Remove all plugs and caps from the hydraulic lines
and securely tighten the lines to the cylinder.
4. Start the engine and remove any blocking from the
carriage.
5. Tilt the side carriage five times through its full range
or until operation of the side tilt carriage is normal (no
jerks or spongy feel).
6. Shut the engine OFF. Check the hydraulic level and
fill as required.
g. Side Tilt Carriage Cylinder Pressure Checking
and Circuit Bleeding
1. Attach a 4000 psi (276 bar) gauge to the main control
valve at the extend base port relief to test the swing
carriage cylinder hydraulic system circuit pressure.
The unit is equipped with test fittings from the factory.
Pressure readings should be 3200 psi ± 100 psi
(220,6 ± 7 bar).
2. Start with the side tilt carriage cylinder balanced; that
is, with the carriage level and centered, not tilted.
3. Tilt the carriage fully left. Hold the joystick at full tilt
left for several seconds, then tilt the carriage fully
right and hold the joystick at full tilt right for several
seconds. Observe the readings on the gauge during
the carriage tilting operations.
4. Center and level the carriage. While levelling the
carriage, check the pressure reading on the gauge.
5. Repeat steps 3 and 4 five times.
9.10.8 Steer Cylinders
The steer cylinders are secured to the axle assemblies.
Steer cylinders are covered in the appropriate manufac-
turer's axle literature. Refer to Section 5 Axles, Wheels
and Tires for further information.
WARNING: Risk of severe personal injury.
Before starting the engine, verify that all
hydraulic connections are properly tightened
and that all tools are removed from the vehicle.
WARNING: Avoid prolonged engine operation
in closed areas with inadequate ventilation.
Failure to properly ventilate exhaust fumes can
result in death or severe personal injury.
Model 3606 • Origin 10/99