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, engage parking
brake, lower cutting units or attachments, and stop en-
gine. Remove key from the ignition switch.
After Repair or Replacement of Components
1.
1. Check oil level in the hydraulic reservoir and add cor-
rect oil if necessary. Drain and refill hydraulic system
reservoir, and change oil filter if component failure was
severe or system is contaminated (see Flush Hydraulic
System).
2.
Clean machine before disconnecting, removing, 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 equipment.
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).
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. Make sure caps or plugs are removed from the hy-
draulic tubes, hydraulic fittings, and components before
reconnecting.
6.
proper adjustment, binding, or broken parts.
After repairs, check control linkages or cables for
3.
tings, and components left open or exposed to prevent
contamination.
Put caps or plugs on any hydraulic lines, hydraulic fit-
7.
After disconnecting or replacing any hydraulic com-
ponents, operate machine functions slowly until air is
out of system (see Charge Hydraulic System).
4.
hoses for proper installation after repairs are completed.
Put labels on disconnected hydraulic lines and
8.
rect leaks if necessary. Check oil level in hydraulic reser-
voir and add correct oil if necessary.
Check for hydraulic oil leaks. Shut off engine and cor-
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 hoses and tubes.
Hydraulic System (Rev. C)
Reelmaster 3100−D
Page 4 − 58
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