Textron JACOBSEN R-311 69166, Technical/Repair Manual

Page: 279 / 402

6-48 4203781 First Edition
HYDRAULICS
6
Figure 6-46
Figure 6-47
3. Install blocking disk between hose (1) and tee fitting
(3).
4. Open flow meter valve (2) completely.
Figure 6-48: Left Wing Cutting Unit Pump Test—
Blocking Disk Between Pump and Deck Valve
5. Bypass seat switch and set park brake.
NOTE
Verify engine rpm is within specification (2800 rpm ± 50)
to ensure accurate hydraulic test results.
6. Start engine and run at full throttle (2800 rpm ± 50).
7. Use the flow meter to warm the hydraulic oil. Turn the
flow meter valve until a reading of 1500 psi (103 bar)
or one half of the relief valve rating is reached. Warm
oil to 120–150° F (49–65° C); open valve fully after
operating temperature is reached.
8. Enable wing mower deck switch and engage PTO
switch.
TN2258
1
3
TN1363
2
TN2251