Toro Greensmaster 3120 Service Manual page 165

Removing the Front Lift Cylinders
Installing the Front Lift Cylinders
Greensmaster 3120
17230SL Rev C
1. Park the machine on a level surface. Lower the cutting units, stop the engine,
engage the parking brake and remove the key from the ignition switch.
2. Read and adhere to the information provided in
Removing and Installing the Hydraulic System Components (page
3. Label all hydraulic connections for proper assembly.
Before opening the hydraulic system, relieve the hydraulic system
pressure to avoid injury from pressurized hydraulic fluid; refer to
Relieving Pressure from the Hydraulic System (page
4. Disconnect the hydraulic hose assemblies from the hydraulic fittings. Allow
the hoses to drain into a suitable container. Cap and plug the hydraulic hoses
and fittings to prevent system contaminations.
5. Remove the cotter pin and the clevis pin that secure the lift cylinder clevis to
the lift arm.
6. Support the lift cylinder to prevent it from dropping.
A. Remove the cap screw and the washer from the pivot pin (item
Figure 73).
B. Pull the pivot pin from the frame, the spacers and the lift cylinder. Note
that the thicker spacer is toward the center of the machine.
C. Remove the hydraulic cylinder from the frame.
7. If hydraulic fittings are to be removed from the cylinder, mark the fitting
location and orientation to allow for correct assembly. Remove the fittings
and discard the O−rings.
Note: Inspect the threads and the sealing surfaces of the hydraulic fittings
and the hydraulic hoses prior to installation. Replace any damaged or worn
fittings or hoses.
1. Lubricate and fit new O-rings onto the cylinder fittings. Install the fittings
making sure that the fitting location and orientation is as noted during
removal. Tighten fittings as specified; refer to
(SAE Straight Thread O-Ring Fittings) (page
2. Position the lift cylinder to the machine.
3. Insert the pivot pin (item
the thinner spacer, the lift cylinder, the thicker spacer and the inner frame
bracket. Secure the pin to the frame with the cap screw and the washer.
4. Position the clevis of the lift cylinder to the lift arm. Secure the lift cylinder
clevis to the lift arm with the clevis pin and the cotter pin.
5. Remove the plugs and the caps from the hydraulic hoses and fittings. Using
the labels placed during removal, connect the hydraulic hoses to the cylinder
fittings. Tighten the connections as specified; refer to
Hoses and Tubes (O-Ring Face Seal) (page
6. Charge the hydraulic system; refer to
4–79).
CAUTION
6 in Figure 73) through the outer frame bracket,
Charging the Hydraulic System (page
Page 4–119
General Precautions for
4–71).
4–4).
Installing the Hydraulic Fittings
4–10).
Installing Hydraulic
4–8).
Hydraulic System: Service and Repairs
6 in