Jacobsen HR5111 Service And Repair Instructions page 174

LEFT WING CYLINDER AND LIFT VALVE
ISOLATION TEST (See Figure 8R-10)
15. Raise left wing mower and lock in transport posi-
tion.
16. At the left cylinder, remove return line from the
rod end of cylinder.
17. Release transport lock.
CAUTION
Be certain the area beneath the mowers is clear.
NOTE
DO NOT start engine.
•
If left wing mower comes down and no oil leaks
from disconnected cylinder port, the lift valve
may be faulty, repair valve, see Section 8H.
NOTE
A small amount of static oil may leak from open
port and/or line.
•
If left wing mower comes down and oil contin-
ues to leak from cylinder port, cylinder is faulty,
repair cylinder, see Section 8L.
RIGHT WING CYLINDER AND LIFT VALVE
ISOLATION EST (See Figure 8R-10)
15. Raise right wing mower and lock in transport posi-
tion.
16. At the right cylinder, remove the return line from
the rod end of cylinder.
17. Release transport lock.
CAUTION
Be certain the area beneath the mowers is clear.
NOTE
DO NOT start engine.
•
If right wing mower comes down and no oil leaks
from disconnected cylinder port, the lift valve
may be faulty, repair valve.
NOTE
A small amount of static oil may leak from open
port and/or line.
•
If right wing mower comes down and oil contin-
ues to leak from cylinder port, cylinder is faulty,
see Section 8L.
SECTION 8R. INSTRUMENT TEST
Figure 8R-10. Lift System Test, Wing Mower Circuit
8R-10
HYDRAULICS