Table of Contents
Advertisement
Figure 101
1. Hydraulic filter
6.
Once the reservoir is filled, start the engine
and let it run at low idle for approximately two
minutes. Activate steering and raise/lower
cutting units several times to purge air from the
system. Stop the engine and check for leaks.
Checking the Hydraulic
Lines and Hoses
Service Interval: Every 2 years
Inspect the hydraulic lines and hoses daily for
leaks, kinked lines, loose mounting supports, wear,
loose fittings, weather deterioration, and chemical
deterioration. Make all necessary repairs before
operating.
WARNING
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury.
• Make sure all hydraulic fluid hoses and
lines are in good condition and all hydraulic
connections and fittings are tight before
applying pressure to the hydraulic system.
• Keep your body and hands away from
pin hole leaks or nozzles that eject high
pressure hydraulic fluid.
• Use cardboard or paper to find hydraulic
leaks.
• Safely relieve all pressure in the hydraulic
system before performing any work on the
hydraulic system.
• Seek immediate medical attention if fluid
is injected into skin.
Adjusting the
Counterbalance Pressure
The counterbalance test port
to test the pressure in the counterbalance circuit.
Recommended counterbalance pressure is 2241 kPa
(325 psi). To adjust the counterbalance pressure,
loosen the locknut, rotate the adjusting screw
(Figure
102) clockwise to increase the pressure
or counterclockwise to decrease the pressure and
tighten the locknut. The engine must be running, the
deck lowered and in float to check pressure.
Note:
The castor wheels of all three cutting units
should remain on the ground when adjusting the
g020461
counterbalance and with counterbalance applied.
1. Counterbalance adjusting
screw
66
(Figure
102) is used
Figure 102
2. Counterbalance test port
g020446
Advertisement
Table of Contents
