Toro Greensmaster 3120 Service Manual page 171

Disassembling the Lift Cylinder
Assembling the Lift Cylinder
Greensmaster 3120
17230SL Rev C
1. Remove any fluid from the cylinder by slowly pumping the cylinder rod while
holding the cylinder over a drain pan.
2. Plug both cylinder ports and clean the outside of the cylinder.
Do not clamp vise jaws against the cylinder barrel. Clamp on the
clevis ONLY.
3. Mount the cylinder securely in a vise by clamping on the clevis end of the
barrel. Using a vise with soft jaws is recommended.
4. Loosen the head from the cylinder barrel.
A. Use a spanner wrench to rotate the head clockwise until the edge of the
retaining ring appears in the barrel opening.
B. Insert a screwdriver under the beveled edge of the retaining ring to start
the retaining ring through the opening.
C. Rotate the head counter−clockwise to remove the retaining ring from the
barrel and the head.
5. Remove the plugs from the ports. Extract the rod, the head and the piston
assembly from the barrel by carefully twisting and pulling on the rod.
Do not clamp vise jaws against the cylinder rod surface. Clamp on
the clevis ONLY.
6. Mount the cylinder rod securely in a vise by clamping on the clevis of the rod.
Using a vise with soft jaws is recommended.
7. Remove the lock nut from the rod. Slide the piston and the head off the rod.
8. Remove the wear ring, the seals, the back−up ring and the O−rings from the
piston and the head.
1. Make sure all the cylinder components are clean before assembly.
2. Coat the new wear rings, the O−rings, the seals and the back−up ring with
clean hydraulic fluid.
A. Install the wear ring and the seal to the outside of the piston.
B. Install the O−ring to the inner bore of the piston.
C. Install the O−ring, the back−up ring and the rod seals to the cylinder head.
Do not clamp vise jaws against the cylinder rod surface. Clamp on
the clevis ONLY.
3. Mount the cylinder rod securely in a vise by clamping on the clevis of the rod.
Using a vise with soft jaws is recommended.
A. Coat the rod with a light layer of clean hydraulic fluid.
IMPORTANT
IMPORTANT
IMPORTANT
Page 4–125 Hydraulic System: Service and Repairs