6-34 4203780 First Edition
HYDRAULICS
6
Front Cutting Unit Motors Test
See Figures 6-26 through 6-29.
IMPORTANT
• This test works together with the front cutting
units circuit test to isolate a problem with the
front cutting units circuit.
• Performing this test will isolate the front cutting
unit motors from the rest of the front cutting unit
circuit.
!
WARNING
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
2. Before performing this test, perform front cutting unit
deck valve test, leaving flow meter connected as
outlined.
3. Bypass seat switch and set park brake.
!
WARNING
4. Install suitable blocking device or tool in left front
cutting unit motor, preventing left front cutting unit
motor from turning.
Figure 6-26
5. Open flow meter valve (1) completely.
Figure 6-27: Front Cutting Unit Motors Test—Left
Cutting Unit Motor Blocked
NOTE
Verify engine rpm is within specification (2800 rpm ± 50)
to ensure accurate hydraulic test results.
The hydraulic system is under pressure, and the
oil will be hot.
• Always relieve pressure in the hydraulic
system before performing service.
• Failure to follow appropriate safety
precautions may result in death or serious
injury.
Required Tools and Materials
• Flow Meter
• -10 ORFS Test Hose 3600 psi (248 bar)
• -10 ORFS Tee Fitting
• Blocking Device or Tool
Safely block cutting unit from rotating using a
suitable device or tool. Failure to follow
appropriate safety precaution may result in death
or serious injury.
TN1363
1
TN2071
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