27
R
Section 7
The hydraulic system will need to be purged of
10.
all air. Raise the rear of the machine so the drive
wheels are off the ground. Use jackstands and block
the front caster wheels to prevent the machine from
moving.
Move the dump valve control levers to the
11.
"freewheel" position. See Figure 7-4.
DUMP VALVE
CONTROL LEVER
DUMP VALVE
CONTROL LEVER
"FREEWHEEL"
POSITION
"FREEWHEEL"
POSITION
Dump Valve Control Lever
Figure 7-4.
While in the operator's position, start the engine,
12.
disengage the parking brake, select the desired
speed using the speed control lever, release the
neutral latch for both sides and slowly release both
the left and right steering control levers.
Run the engine at 1/2 throttle and move the steering
13.
control levers to full forward and reverse 5 to 6 times.
Move the speed control lever to the neutral position,
14.
engage the neutral latch for both sides and engage
the parking brake. Move the dump valve control
levers to the "drive" position. See Figure 7-4.
While in the operator's position, start the engine,
15.
disengage the parking brake, select the desired
speed using the speed control lever, release the
neutral latch for both sides and slowly release both
the left and right steering control levers. It may be
necessary to repeat steps 11 to 15 until the air is
completely purged from the system.
Check the hydraulic system oil level as explained in
16.
Section 7.2.
Remove the hydraulic filters from both axles and
4.
allow the fluid to drain into the container. Properly
discard the oil when the system has drained
completely. See Figure 7-2.
Once the hydraulic system has drained, install new
5.
hydraulic oil filters to both axles by hand, turn 3/4
to one complete turn after filter gasket contacts the
filter base.
Reinstall the filter guards and torque the screws to
6.
65 in/lbs.
Remove the top port plug from both axles before
7.
filling with oil. See Figure 7-3.
REMOVE TOP
PORT PLUG
Top Port Plug Location
Figure 7-3.
Fill the hydraulic expansion reservoir with 20w50
8.
motor oil until the oil just appears at the bottom of
each axle top port. Approximately 5 quart capacity.
Reinstall the top port plugs and torque to 180 in/lbs.
-NOTE-
The left side axle will fill with oil first using
approximately 4 quarts of oil. Reinstall the top port
plug in the left axle and continue to fill the hydraulic
system through the expansion reservoir. The right
side axle should fill up to the bottom on the top
port plug after adding an additional one quart of
oil. Reinstall the top port plug on the right axle and
fill the hydraulic expansion reservoir to the proper
level as explained in Section 7.2.
Reinstall the hydraulic expansion reservoir cap.
9.
