24
8. Stop the engine and check the oil level in reservoir, add
oil if necessary.
9. Check all connections for leaks.
10. Dispose of oil properly.
Checking the Hydraulic Lines
and Hoses
Check 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.
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.
Warning
Charging the Hydraulic System
Whenever a hydraulic component is repaired or replaced,
the hydraulic oil filter should be changed and the hydraulic
system charged.
Important Make sure that the hydraulic reservoir and
filter are filled with oil at all times when charging the
hydraulic system.
1. Park the machine on a level surface and turn the engine
off.
2. Remove the 3 screws securing the side panel to the right
side of the machine and remove the panel.
3. Loosen the locknut on the spring adjusting pin until the
bearing moves freely from the cam on the lever
(Fig. 24), allowing the pump shaft freedom to rotate
during start-up.
1
2
3
Figure 24
1. Spring adjusting pin
2. Bearing
3. Cam
4. Raise the front wheel and one of the rear wheels off of
the floor and place support blocks under the frame.
5. Start the engine and set the throttle to allow the engine
to run at approximately 1800 RPM.
6. Actuate the lift valve lever until the lift cylinder rod
moves in and out several times. If the cylinder rod does
not move after 10–15 seconds or the pump emits
abnormal sounds, shut the engine off immediately and
determine the cause or problem. Inspect for the
following:
• Loose filter or suction lines
• Loose or faulty coupler on the pump
• Blocked suction line
• Faulty charge relief valve
• Faulty charge pump
If the cylinder moves in 10–15 seconds, proceed to
step 7.
Note: A hydrostatic transmission service manual (Bulletin
No. 9646) and a repair manual (Bulletin No. 9659) can be
obtained from:
Sundstrand Corporation
2800 East 13th Street
Ames, Iowa 50010
7. Operate the traction pedal in forward and reverse. The
wheels that are off of the floor should rotate in the
proper direction. If the wheels rotate in the wrong
direction, stop the engine, remove the lines from the
rear of the pump and reverse the locations. If the wheels
rotate in the proper direction, stop the engine and adjust
the spring adjusting pin locknut. Adjust the traction
neutral position; refer to Adjusting the Traction Drive
for Neutral, page 25.
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