Filter
Top Products
Greensmaster 3320/3420Hydraulic System Page 5 -- 46
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, disengage and
lower cutting units, move functional control lever to neu-
tral (N), engage parking brake and stop the engine. Re-
move the key from the ignition switch. Wait for all
machine movement to stop before getting off machine.
2. Clean m achine before disconnecting, removing or
disassembling any hydraulic components. Make sure
hydraulic components, hose connections and fittings
are cleaned thoroughly. Always keep in mind the need
for cleanliness when working on hydraulic equipment.
CAUTION
Before opening hydraulic system, operate all hy-
draulic controls to relieve system pressure and
avoid injury from pressurized hydraulic oil. See
Relieving HydraulicSystem Pressurein the Gen-
eral Information section of this chapter.
3. Put clean caps or plugs on any hydraulic lines, hy-
draulic fittings and components left open or exposed to
prevent contamination.
4. Put labels on disconnected hydraulic tubes and
hosesfor proper installation after repairsare completed.
5. Note the position of hydraulic fittings (especially el-
bow fittings) on hydraulic components before removal.
Markparts ifnecessary tomakesure theywillbe aligned
properly when reinstalling hydraulic hoses and tubes.
After Repair o r Replacement of Components
1. Checkoil levelinthe hydraulic reservoirand addcor-
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 in this section).
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 lines, hydraulic fittings and components before
reconnecting hydraulic lines.
4. Use proper tightening methods when installing hy-
draulic fittings and lines (see Hydraulic Fitting Installa-
tion and Hydraulic Hose and Tube Installation in the
General Information section of this chapter).
5. After repairs, check control linkages or cables for
proper adjustment, binding or broken parts.
6. After disconnecting or replacing any hydraulic com -
ponents, operate machine functions slowly until air is
out of system(see Charge Hydraulic System in thissec-
tion).
7. Checkfor hydraulicoilleaks. Shutoffengineandcor-
rect le aksifnecessary.Check oillevel inhydraulic reser-
voir and add correct oil if necessary.