SkyTrak 8042 Service Manual - Manual (Page 582)

8.167 Model 8042, 10042, 10054 Legacy Rev. 10/03
Hydraulic System
f. Swing Carriage Cylinder Installation
1. Install the swing carriage cylinder(s) (16) on the pivot
mount (20). Secure the rod ends to the pivot mount
using the shims (25) and bearings (26). Insert the
pin (19) and secure with the bolt (17) and nut (18).
2. Secure the tube end to the mount plates (23) using the
shims (24) and pins (22). Secure with snap rings (21).
3. Lubricate the tube ends with multi-purpose, lithium-
based grease.
4. Remove all plugs and caps from the hydraulic lines,
and securely tighten the lines to the cylinder(s).
5. Start the engine.
6. Swing the carriage five times through its full range or
until the operation of the swing carriage is normal
(no jerks or spongy feel).
7. Shut the engine OFF. Check the hydraulic level and
fill as required.
g. Swing Carriage Cylinder Pressure Checking and
Circuit Bleeding
1. Attach a 4000 psi (276 bar) gauge to the test fitting
on the main control 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. Center the swing carriage cylinders.
3. Swing the carriage fully left. Hold the joystick at full
swing left for several seconds, then swing the
carriage fully right and hold the joystick at full swing
right for several seconds. Observe the readings on
the gauge during the carriage swinging operations.
4. Center the carriage. While centering the carriage,
check the pressure reading on the gauge.
5. Repeat Steps 3 and 4 five times.
WARNING:
Escaping hydraulic fluid
under pressure can penetrate the skin, causing
death or serious injury.
WARNING:
Avoid prolonged engine
operation in closed areas with inadequate
ventilation. Failure to properly ventilate exhaust
fumes can result in death or serious injury.
MT1970
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