SkyTrak 6036 Service Manual - Manual (Page 338)

Hydraulic System
8.122 Model 6036 Legacy
f. Frame Sway Cylinder Installation
1. Lubricate the cylinder pins with multi-purpose,
lithium-based grease.
2. Use a sling and hoist or other suitable lifting device
to help install the cylinder. Orient the cylinder with
the cylinder eyelet on top and the rod eyelet on the
bottom.
3. Install the upper cylinder pin. Drive the lubricated
cylinder pin through the cylinder eyelet, frame mount
and self-aligning bearing. Secure the pin with a
capscrew and hex-locknut. Torque to 18 lb/ft (24 Nm).
4. Use new flat-faced, oiled o-rings when installing the
upper and lower hydraulic hoses. Install and tighten
the hoses onto the appropriate fittings.
5. With the help of an assistant, start the engine.
Carefully and slowly, operate the joystick frame sway
function to properly align the rod with the anchor
plate as required. Turn the engine OFF.
6. Install the lower cylinder pin. Drive the lubricated
cylinder pin through the rod eyelet, anchor plate and
self-aligning bearing. Secure the pin with a capscrew
and hex-locknut. Torque nut to 18 lb/ft (24 Nm).
7. Remove all tools, etc. from the vehicle. Carefully
remove the blocking supporting the vehicle frame at
the front and rear axles.
8. Start the engine and run at approximately one-third
to one-half throttle for about one minute without
moving the vehicle or operating any hydraulic
functions. Operate the joystick to fully sway the
frame left and right at least five times each.
9. Inspect for leaks and check the level of the hydraulic
fluid in the reservoir. Shut the engine OFF. Add
hydraulic fluid if required.
10. Wipe up any hydraulic fluid spillage in, on, near and
around the vehicle, work area and tools.
g. Frame Sway Cylinder Pressure Checking and
Circuit Bleeding
1. Attach a 4000 psi (276 bar) gauge to the test fitting
on the “VG” port of the unloader valve to test the
system pressure. Pressure readings should be
3000
±100 psi (207 ±7 bar). Refer to Section 8.7,
“Hydraulic System Testing.” To check the cylinder
pressure, consult the factory.
2. Start with the frame sway and stabilizer cylinders
balanced, that is, with the frame level.
3. Sway the vehicle fully left. Hold the joystick at full
sway left for several seconds, then sway the vehicle
fully right and hold the joystick at full sway right for
several seconds. Observe the readings on the gauge
during the frame sway operations.
4. Level the frame. While leveling the frame, check the
pressure reading on the gauge.
5. Repeat Steps 3-4 five times.
8.13.9 Swing Carriage (Optional)
The optional swing carriage provides a way to swing the
carriage attachment from side-to-side. The swing carriage
includes two cylinders (Fig. 8-80, 1) that operate together
to provide the side-to-side motion.
Figure 8- 80 Swing Carriage Cylinders
a. Swing Carriage Cylinder Removal
1. Level the boom (place the boom in a horizontal
position).
2. Swing the carriage to the centered position.
3. Lower the boom until the carriage is resting firmly on
the ground.
4. Place the travel select lever in (N) NEUTRAL, place
the neutral lock lever in the (N) NEUTRAL LOCK
position, engage the park brake switch and shut the
engine OFF.
WARNING:
Avoid prolonged engine
operation in closed areas with inadequate
ventilation. Failure to properly ventilate exhaust
fumes can result in death or serious injury.
WARNING:
Escaping hydraulic fluid
under pressure can penetrate the skin, causing
death or serious injury.
MT2450
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