6-46 4203781 First Edition
HYDRAULICS
6
Left Wing Cutting Unit Circuit Test
See Figures 6-43 through 6-45.
IMPORTANT
• This test works together with the left cutting unit
motors test to isolate a problem with the left
cutting unit circuit.
• Performing this test will isolate the left wing
cutting unit pump, deck valve, and left wing
cutting unit inside motor from the rest of the left
wing cutting unit circuit.
!
WARNING
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
2. Raise the seat and seat platform.
Figure 6-43
3. Disconnect hose (1) from fitting (2).
Figure 6-44
4. Install tee fitting (5) to fitting (2).
5. Connect test hose (6) of flow meter inlet and hose (1)
to tee fitting (5).
NOTE
Make sure hose end is under oil level in hydraulic tank to
prevent aeration of oil.
6. Secure flow meter outlet hose (3) to the hydraulic
tank fillneck.
!
WARNING
7. Install suitable blocking device or tool in left wing
cutting unit inside motor, preventing left wing cutting
unit inside motor from turning.
8. Open flow meter valve (4) completely.
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
TN2258
1
2
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.
5
6
TN1363
4
3
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