Service and Repairs
General Precautions for Removing and Installing Hydraulic System Components
Before Repair or Replacement of Components
Before removing any parts from the hydraulic sys-
tem, park machine on a level surface, apply parking
brake, lower attachment and stop engine. Remove key
from ignition switch.
After Repair or Replacement of Components
1.
1. Check oil level in the hydraulic tank and add correct
oil if necessary. Drain and refill hydraulic tank and
change hydraulic oil filter if component failure was se-
vere or system is contaminated (see Flush Hydraulic
System).
2.
Thoroughly clean machine before disconnecting, re-
moving or disassembling any hydraulic components.
Make sure hydraulic components, hoses, connections
and fittings are cleaned thoroughly. Always keep in mind
the need for cleanliness when working on hydraulic
components.
2. Lubricate o–rings and seals with clean hydraulic oil
before installing hydraulic components.
3.
Make sure caps or plugs are removed from the hy-
draulic tubes, hydraulic fittings and components before
reconnecting.
WARNING
4. Use proper tightening methods when installing hy-
draulic hoses and fittings (see Hydraulic Fitting Installa-
tion in the General Information section).
Before disconnecting or performing any work
on the hydraulic system, all pressure in the
system must be relieved. See Relieving Hy-
draulic System Pressure in the General Infor-
mation section.
5.
proper adjustment, binding or broken parts.
After repairs, check control linkages or cables for
6.
nents, operate machine functions slowly until air is out
of system (see Charge Hydraulic System).
After connecting or replacing any hydraulic compo-
3.
Put caps or plugs on any hydraulic lines, hydraulic fit-
tings or components left open or exposed to prevent hy-
draulic system contamination.
7.
rect leaks if necessary. Check oil level in hydraulic tank
and add correct oil if necessary.
Check for hydraulic oil leaks. Shut off engine and cor-
4.
Put labels on disconnected hydraulic lines and
hoses for proper installation after repairs are completed.
5.
Note the position of hydraulic fittings (especially el-
bow fittings) on hydraulic components before removal.
Mark parts if necessary to make sure they will be aligned
properly when reinstalling hydraulic fittings, hoses and
tubes.
Check Hydraulic Lines and Hoses
Check hydraulic lines and hoses daily for leaks, kinked
lines, loose mounting supports, wear, loose fittings,
weather deterioration and chemical deterioration. Make
any necessary repairs before operating the machine.
WARNING
Keep body and hands away from pin hole leaks
or nozzles that eject hydraulic fluid under high
pressure. Use paper or cardboard, not hands, to
search for leaks. Hydraulic fluid escaping under
pressure can have sufficient force to penetrate
the skin and cause serious injury. If fluid is in-
jected into the skin, it must be surgically re-
moved within a few hours by a doctor familiar
with this type of injury. Gangrene may result from
such an injury.
Hydraulic System
Page 4 – 34
Sand Pro & Infield Pro 3040/5040
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| Language | English |
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