Removing the Polar Trac Lift Cylinder
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)
.
1. Park the machine on a level surface, lower the implement, shut off the
engine, set the parking brake, and remove the key from the key switch.
2. Clean the hydraulic hose ends and fittings on the lift cylinder to prevent
contaminants from entering into the hydraulic system.
3. For assembly purposes, label all the hydraulic hoses and fittings.
4. Disconnect the hydraulic hoses that are connected to the hydraulic fittings on
the lift cylinder.
5. Install clean caps or plugs in the hose openings to prevent system
contamination.
6. Remove the locknut (item 32 in
), flange-head screw, and pivot pin
that attach the cylinder head of the lift cylinder to the carrier frame.
7. Remove the locknut (item 32 in
), flange-head screw, and pivot pin
that attach the lift cylinder rod end to the lift arm assembly.
8. Remove the lift cylinder from the machine.
9. If necessary, remove the hydraulic fittings from the lift cylinder. Note the
orientation of the fittings for assembly purposes.
10. Remove and discard the O-rings from fittings.
Installing the Polar Trac Lift Cylinder
1. If the hydraulic fittings were removed from the lift cylinder, lubricate and
install new O-rings onto the fittings. Install the fittings into the lift cylinder
ports; refer to
Installing the Hydraulic Fittings (SAE Straight Thread O-Ring
Fitting into the Component Port) (page 4–7)
. Use the notes that you recorded
during removal to orientate the fittings.
2. Position the lift cylinder to the machine.
3. Attach the cylinder head of the cylinder to the carrier frame with the pivot
pin, flange-head screw, and locknut.
4. Attach the cylinder rod end to the lift arm assembly with the pivot pin,
flange-head screw, and locknut.
5. Remove the caps or plugs that were installed to the hydraulic hoses during
the removal process.
6. Use the labels that you attached during the lift cylinder removal to correctly
connect the hydraulic hoses to the lift cylinder fittings; refer to
Hydraulic Hose and Tube (O-Ring Face Seal Fitting) (page 4–5)
.
7. Lubricate the grease fittings on the cylinder pivot pins.
8. Ensure that the hydraulic tank is full. Add correct quantity of fluid if necessary;
refer to the
Traction Unit Operator’s Manual
.
Hydraulic System: Service and Repairs
Page 4–130
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: ......
