Procedure for Deck Motor Efficiency -- Case Drain
Test:
10.After achieving 1200 PSI, place disconnected motor
case drain hose into a container graduated in ounces or
milliliters (e.g. Toro #TOR4077) and collect hydraulic
fluidfor15seconds.After15seconds,remove hoseend
from container.
1.
Make sure hydraulic oil is at normal operating tem-
perature.
2.
Unit Operator’s Manual).
Remove blades from all cutting decks (see Cutting
11.
the DISENGAGE position. Stop engine.
Stop cutting units by positioning the PTO switch to
3.
lowered and off. Make sure engine is off and the parking
brake is engaged.
Parkmachineonalevelsurfacewiththecuttingunits
12.Identify
cord test results.
amount of oil collected in the container. Re-
13.If
ters), repair or replace the tested deck motor.
flow was greater than 22.4 ounces (662 millili-
4.
Read Precautions for Hydraulic Testing.
14.Relieve
hydraulic system pressure (See Relieving
WARNING
Hydraulic System Pressure in the General Information
section). Disconnect tester from motor and hose. Re-
connect hydraulic hoses.
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.
15.Repeat
test with other deck motors as needed.
16.Install cutting blades after testing is completed (see
Cutting Unit Operator’s Manual).
NOTE: The deck motors are connected in series. To
isolate a faulty motor, all three motors in the cutting cir-
cuit may have to be tested by starting with the upstream
motor first.
4
3
5.
hose fromthemotor.Note: the return hose is on the mo-
Forthesuspectedbaddeckmotor,disconnectreturn
tor side that includes the relief valve (Fig. 28).
2
6.
Install hydraulic tester (pressure and flow) in series
with the motor and the disconnected return hose. Make
sure the tester flow control valve is fully open.
1
7.
Disconnect hose from deck motor case drain at the
Figure 28
3.
4.
bulkhead T--fitting (Fig. 29). Plug the T--fitting. Place
open end of disconnected case drain hose into a drain
pan.
1.
2.
Deck motor
Return line
Relief valve
Case drain hose
3
8.
One person should sit on the seat and operate the
machine while another person reads the tester and
measures deck motor case drain leakage. Make sure
traction pedal is in NEUTRAL. Start engine and move
the throttle to full speed (3050 + 50 RPM).
2
6
5
1
CAUTION
RIGHT
1
Keepawayfromdecksduringtesttopreventper-
sonal injury from rotating parts.
FRONT
4
9.
Engage decks by positioning the PTO switch to the
ENGAGE position. While watching hydraulic tester
pressure gauge, slowly close flow control valve until a
pressure of 1200 PSI is obtained.
Figure 29
1.
2.
3.
Deck motor
Rear case drain hose
Rear T--fitting
4.
5.
6.
Front LH case drain
Front RH case drain
Front T--fitting
Groundsmaster 3505--D
Page 4 -- 43
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Groundsmaster 3505 D |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
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