Flushing the Hydraulic System (continued)
WARNING
Before disconnecting or doing any work on the hydraulic system,
release all the pressure in the system; refer to
from the Hydraulic System (page 4–11)
.
2. Park machine on a level surface, lower the cutting deck (or implement), shut
off the engine, set the parking brake, and remove the key from the key switch.
Note:
Ensure that you clean all the hydraulic connections that are
disconnected for draining.
3. Drain the hydraulic fluid from the hydraulic tank and transmission.
4. Drain the complete hydraulic system. Drain all the hoses, tubes, and
components while the system is warm.
5. Remove and replace the hydraulic-fluid filter.
6. Inspect and clean the hydraulic-fluid tank; refer to
.
IMPORTANT
Follow all local codes and regulations when recycling or disposing
the hydraulic fluid and filters.
7. Connect all the hydraulic hoses, tubes, and components that were
disconnected while draining the system; refer to
and Tube (O-Ring Face Seal Fitting) (page 4–5)
.
IMPORTANT
Using other hydraulic fluids could damage the hydraulic system.
Use the hydraulic fluids that are specified in the
Traction Unit
Operator’s Manual
.
8. Fill the hydraulic tank with the correct quantity of new hydraulic fluid.
9. Prime the hydraulic pumps; refer to
Priming the Hydraulic Pumps (page
.
10. Start the engine and operate it at low-idle speed
(1,400 rpm)
for a minimum
of 2 minutes. Increase the engine speed to high idle
(3,000 rpm)
for a
minimum of 1 minute under no load.
11. Raise and lower the cutting deck (or implement) several times.
12. Shut off the engine and check for hydraulic-fluid leaks.
Note:
Check the hydraulic-fluid level in the hydraulic tank and add correct
quantity of fluid if necessary; refer to the
Traction Unit Operator’s Manual
.
13. Operate the machine for 2 hours under normal operating conditions.
14. Check the condition of hydraulic fluid. If new fluid shows any signs of
contamination, repeat steps
through
again until the fluid is clean.
15. Assume the normal operation and follow the recommended maintenance
intervals.
Hydraulic System: Service and Repairs
Page 4–60
Groundsmaster 7210
16222SL Rev C
Summary of Contents for Groundsmaster 7210
Page 4: ...NOTES Revision History Page 4 Groundsmaster 7210 16222SL Rev C...
Page 32: ...Specifications and Maintenance Special Tools Page 2 16 Groundsmaster 7210 16222SL Rev C...
Page 60: ...Diesel Engine Service and Repairs Page 3 28 Groundsmaster 7210 16222SL Rev C...
Page 196: ...Hydraulic System Service and Repairs Page 4 136 Groundsmaster 7210 16222SL Rev C...
Page 304: ...Chassis Service and Repairs Page 6 42 Groundsmaster 7210 16222SL Rev C...
Page 327: ...Drawing 105 7260 Rev E Sheet 1 16222SL Rev C Page A 3 Hydraulic Schematic g186843...
Page 328: ...Page A 4 16222SL Rev C Drawing 119 4372 Rev C Sheet 1 Electrical Schematic Platform g186842...
Page 329: ...Drawing 119 4377 Rev C Sheet 1 16222SL Rev C Page A 5 Electrical Schematic Engine g186841...
Page 336: ...Page A 12 16222SL Rev C Drawing 119 4386 Rev A Sheet 1 Wire Harness Drawing Cab Power g186851...
Page 342: ......
