6-30 4203781 First Edition
HYDRAULICS
6
Figure 6-19
Figure 6-20
3. Install blocking disk between hydraulic hose (1) and
tee fitting (3).
4. Open flow meter valve (2) completely.
Figure 6-21: Front 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 front mower deck switch and engage PTO
switch.
TN2239
1
3
TN1363
2
TN2244
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