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Reelmaster 3100−DHydraulic System (Rev. C)
Page 4 − 58
Service and Repairs
General Precautions for Removing and Installing Hydraulic System Components
Before Repair or Replacement of Components
1. 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.
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.
WARNING
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.
3. Put caps or plugs on any hydraulic lines, hydraulic fit-
tings, and components left open or exposed to prevent
contamination.
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 hoses and tubes.
After Repair or Replacement of Components
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. 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.
4. Use proper tightening methods when installing hy-
draulic hoses and fittings (see Hydraulic Fitting Installa-
tion).
5. Make sure caps or plugs are removed from the hy-
draulic tubes, hydraulic fittings, and components before
reconnecting.
6. After repairs, check control linkages or cables for
proper adjustment, binding, or broken parts.
7. After disconnecting or replacing any hydraulic com-
ponents, operate machine functions slowly until air is
out of system (see Charge Hydraulic System).
8. Check for hydraulic oil leaks. Shut off engine and cor-
rect leaks if necessary. Check oil level in hydraulic reser-
voir and add correct oil if necessary.