Troubleshooting - New Holland LS140 Workshop Manual

TROUBLESHOOTING

When performing a test on the hydraulic system, use
the proper test procedures and test equipment.
Before testing, lower the attachment to the ground or
remove the attachment from the loader.
If testing is to be performed with a raised boom, make
sure the boom is raised above and resting on the
boom lock pins.
Before opening the hydraulic system, clean the area
thoroughly to prevent contaminating the system.
Before opening the hydraulic system, relieve all pres-
sure from the system.
Before testing the hydraulic system, check the hy-
draulic oil level.
Before testing the hydraulic system, the oil must be
at normal operating temperature.
If testing requires the skid-steer loader to be raised,
use adequate blocking and/or jack stands to securely
support the loader.
CAUTION
When connecting test equipment into the hy-
draulic system, relieve the pressure in the sys-
tem. Stop the engine, turn the ignition switch to
the "on" position and operate all hydraulic con-
trol valve circuits to relieve pressure. Turn the
ignition switch to the "off" position.
SECTION 35 - HYDRAULIC SYSTEM
Gauges, gauge fittings, and hoses must have op-
erating pressure ratings of at least 25% higher
than the highest pressures of the system.
Never adjust or replace the relief valves to get
higher pressures than those specified by the
equipment manufacturer.
Fluid under pressure can have sufficient force to
penetrate the skin, causing serious personal in-
jury. Always protect the skin and eyes from es-
caping fluid under pressure.
Before disconnecting lines or fittings, be sure to
turn off the skid loader engine and relieve all
pressure. Before applying pressure to the sys-
tem, be sure all connections are tight and that
lines, pipes, and hoses are not damaged.
If injured by escaping fluid, obtain medical assis-
tance at once. Serious infection or reaction can
develop if medical treatment is not administered
immediately.
Remove any attachment from the mounting plate
before loosening or disconnecting any hydraulic
lines.
Use adequate blocking and/or jack stands to in-
sure that the loader is safely supported with all
four wheels off the ground.
35-10
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WARNING
CAUTION