Greensmaster 3300/3400 Hydraulic SystemPage 5 -- 53
Procedure for Reel Motor Case Drain Flow
Test:
1. Make sure hydraulic oil is at normal operating tem-
peraturebyoperatingthemachineforapproximatelyten
(10) minutes. Make sure the hydraulic tank is full.
2. Parkmachineonalevelsurfacewiththecuttingunits
lowered. Make sure engine is off and the parking brake
is engaged.
CAUTION
Prevent personal injuryand/or damageto equip-
ment. Read all WARNINGS, CAUTIONS and Pre-
cautions for Hydraulic Testing a t the beginning
of this section.
3. Forthesuspectedfaultyreelmotor,thoroughlyclean
junctionofhydraulicreturnhoseandrearfitting.Discon-
nect hose from motor fitting.
4. Install hydraulic tester (pressure and flow) in series
with the reel motor fitting and the disconnected hose.
Make sure that tester flow arrow points from the motor
and toward the disconnected hose. Also, make sure
flow control valve on the tester is fully open.
5. Make sure backlap lever on the mow control man-
ifoldisinthemow position and reel speed knob (FC) is
set to highest speed setting (fully open).
6. Disconnect hose from case drain of the motor to be
tested at the bulkhead fitting.
A. Cap the bulkhead port.
B. Leave the case drain hose from the motor open
and place open end of disconnected hose into a
drain pan.
7. One person should s it on the seat and operate the
machine while another person reads the tester and
measures case drain leakage. Make sure functional
controlleverisinNEUTRAL.Startengineandmovethe
throttle to full speed.
CAUTION
Keep away from reels during test to preventper-
sonal injury from the rotating reel blades.
8. Engagereelsbypositioningthefunctionalcontrolle-
ver to MOW position. While watching pressure gauge,
slowly closeflow controlvalve onthe testeruntil apres-
sure of 1000 PSI (69 bar) is obtained.
9. After achieving 1000 PSI (69 bar), place discon-
nected reel motor c ase drain hose into a container gra-
duated in ounces or milliliters (Tool TOR4077: see
SpecialTools)andcollecthydraulicfluidfor15seconds
(Fig.30).After15seconds,removehoseendfromcon-
tainer.
10.Disengagecuttingunits,opencontrolvalveontester
and stop the engine.
11.Measuretheamountofoilcollected inthecontainer.
Record test results.
12.If case drain flow was greater than 16 ounces (473
ml)in15seconds(0.5GPM/1.9LPM),repairorreplace
the reel motor as necessary.
13.After case drain flow has been determined, discon-
nect tester from reelmotorfittingand return hose. Con-
nect hose to the motor fitting.
14.Remove plug from bulkhead fitting. Connect case
drain hose to the bulkhead fitting.
15.Test reel motor case drain flow for other reel motors
as needed.
Figure 30
Figure 31
Hydraulic
System
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